Relevant bibliographies by topics / Nanoscience. Nanoparticles. Nanostructured materials

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Nanoscience. Nanoparticles. Nanostructured materials'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 February 2022

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Journal articles on the topic "Nanoscience. Nanoparticles. Nanostructured materials"

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Di Maria, Francesca, Mattia Zangoli, and Giovanna Barbarella. "Supramolecular Thiophene-Based Materials: A Few Examples of the Interplay between Synthesis, Optoelectronic Properties and Applications." Organic Materials 03, no. 02 (April 2021): 321–36. http://dx.doi.org/10.1055/s-0041-1730934.

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Supramolecular nanostructured thiophene based materials with optoelectronic functions are of wide current interest and are playing a crucial role in different fields of nanoscience and nanotechnology. This short review gives a concise report of some particularly interesting examples from our own work concerning thiophene-based supramolecular architectures at multiple length scales, their function and application in devices. We start with some general considerations on the great chemical diversity of thiophene derivatives and their supramolecular architectures. Then we focus on how the supramolecular organization of specific thiophene derivatives may generate nanostructures that enable new functions and applications in devices. For each example, we report the synthesis of the corresponding thiophene derivatives.1. Introduction2. Supramolecular Organization may Impart New Functions to the System3. Supramolecular and Optoelectronic Properties of Oligothiophene-S,S-dioxides4. Colloidal Nanoparticles formed by Self-Assembly of Thiophene-Based Polymers5. Conclusions and Outlook
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Sharma, Rahul, Deepti Sharma, Linda D. Hazlett, and Nikhlesh K. Singh. "Nano-Biomaterials for Retinal Regeneration." Nanomaterials 11, no. 8 (July 22, 2021): 1880. http://dx.doi.org/10.3390/nano11081880.

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Nanoscience and nanotechnology have revolutionized key areas of environmental sciences, including biological and physical sciences. Nanoscience is useful in interconnecting these sciences to find new hybrid avenues targeted at improving daily life. Pharmaceuticals, regenerative medicine, and stem cell research are among the prominent segments of biological sciences that will be improved by nanostructure innovations. The present review was written to present a comprehensive insight into various emerging nanomaterials, such as nanoparticles, nanowires, hybrid nanostructures, and nanoscaffolds, that have been useful in mice for ocular tissue engineering and regeneration. Furthermore, the current status, future perspectives, and challenges of nanotechnology in tracking cells or nanostructures in the eye and their use in modified regenerative ophthalmology mechanisms have also been proposed and discussed in detail. In the present review, various research findings on the use of nano-biomaterials in retinal regeneration and retinal remediation are presented, and these findings might be useful for future clinical applications.
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Mallikarjuna, Koduru, Amal M. Al-Mohaimeed, Dunia A. Al-Farraj, Lebaka Veeranjaneya Reddy, Minnam Reddy Vasudeva Reddy, and Arifullah Mohammed. "Facile Synthesis, Characterization, Anti-Microbial and Anti-Oxidant Properties of Alkylamine Functionalized Dumb-Bell Shaped Copper-Silver Nanostructures." Crystals 10, no. 11 (October 26, 2020): 966. http://dx.doi.org/10.3390/cryst10110966.

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Admirable studies have been established on the utilization of ligand-materials as bimetallic nanoparticles in the field of nanoscience and biotechnology. UV-Vis, XRD, HR-TEM, STEM-HAADF, EDS, FTIR, and DPPH analyses characterized the optical, structural, compositional morphological, and antioxidant properties of synthesized Cu-Ag nanostructures. The spectrum of UV-Vis exhibited absorption bands at 590 and 413 nm, which reflects the surface plasmon resonance of copper-silver nanostructures. Herein, our exploration of alkylamine stabilized copper/silver nanostructures while using hexadecylamine as capping material and their primary biomedical investigation on antimicrobial and antioxidant studies is reported. Cu-Ag bimetallic nanostructures were more effective against gram-negative bacteria E. coli and Klebsiella when compared to gram-positive bacteria. The antioxidant activity of Cu-Ag nanoparticles was comparable with Ascorbic acid.
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Selvamani, Thangavel, Abdullah M. Asiri, Abdulrahman O. Al-Youbi, and Sambandam Anandan. "Emergent Synthesis of Bismuth Subcarbonate Nanomaterials with Various Morphologies towards Photocatalytic Activities - An Overview." Materials Science Forum 764 (July 2013): 169–93. http://dx.doi.org/10.4028/www.scientific.net/msf.764.169.

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The unique properties of bismuth subcarbonate nanomaterials provide benefits in remediation, pollution prevention, and efficient use of resources; however, the greatest contribution to green chemistry is likely to be the new manufacturing strategies available through nanoscience. Thus, the present overview mainly focuses on the synthesis of diverse bismuth subcarbonates nanostructures such as nanoparticles, nanotubes, nanoplates, nanosheets, hollow microspheres and microstructures resembles rose, sponge, flower and persimmon-like morphologies; and studied their photocatalytic activities to reveal the morphological features of the precursor. Moreover the wide characterizations of these materials using various spectroscopic and microscopic techniques; and the probable catalytic mechanism based on their diverse architectures were discussed.
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Amin, Sidra, Aneela Tahira, Amber Solangi, Ayman Nafady, and Zafar Hussain Ibupoto. "MoSx–Co3O4 Nanocomposite for Selective Determination of Ascorbic Acid." Journal of Nanoscience and Nanotechnology 21, no. 4 (April 1, 2021): 2595–603. http://dx.doi.org/10.1166/jnn.2021.19126.

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Designing a nanocomposite with sensitive and selective determination of ascorbic acid is challenging task. It is possible through the exploitation of attractive features of nanoscience and nanotechnology for the synthesis of nanostructured materials. Herein, we report the decoration of nanoparticle of MoSx on the surface of Co3O4 nanowires by hydrothermal method. The MoSx nanoparticles shared the large surface on the Co3O4 nanowires, thus it supported in the development enzyme free ascorbic acid sensor. Non-enzymatic sensor based on MoSx-Co3O4 composite was found very selective for the determination of ascorbic acid (AA) in phosphate buffer solution of pH 7.4. The MoSx-Co3O4 nanocomposite was used to modify the glassy carbon electrode to measure AA from variety of practical samples. The MoSx-Co3O4 nanocomposite was used to modify the glassy carbon electrode and it has shown the attractive analytical features such as a low working potential +0.3 V, linear range of concentration from 100–7000 μM, low limit of detection 14 μM, and low limit of quantification (LOQ) of 42 μM. The developed sensor is highly selective and stable. Importantly, it was applied successfully for the practical applications such as detection of AA from grapefruit, tomato and lemon juice. The excellent electrochemical properties of fabricated MoSx-Co3O4 nanocomposite can be attributed to the increasing electro active surface area of MoSx. The presented nanocomposite is earth abundant, environment friendly and inexpensive and it holds promising features for the selective and sensitive determination of AA from practical applications. The nanocomposite can be capitalized into the wide range of biomedical applications.
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Rajani, Altaf, Priyanka Chauhan, and Pranav Y. Dave. "Nanocomposites: A New Tendency of Structure in Nanotechnology and Material Science." Journal of Nanoscience and Technology 7, no. 1 (February 10, 2021): 937–41. http://dx.doi.org/10.30799/jnst.315.21070103.

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Nanoscience has become a diverse and unique field of scientific and technical activity. Over the last few years, the research interest in nanomaterials/nanoparticles and their various applications in various electronic devices, effective optoelectronic devices, bio-sensors, photodetectors, solar cells, nanodevices and plasmonic structures have been increasing tremendously. The reasons are-the unique properties of nanostructures and the outstanding performance of nanoscale devices. At the nanoscale, a material’s property can change dramatically, with unique design possibilities and properties; they attract the attention of researchers worldwide. Nano-composites are those materials with a Nano-scale structure which improves the microscopic property of the products. Composite materials have combinations of two or several nanocomponents, which acquire new and unique characteristic properties that the individual constituents, by themselves, cannot obtain. There are number of various methods to synthesis various Nano-composites. Based on the literature survey, this review article explains a brief introduction of nanocomposites and their types, preparation methods and different diverse properties. It also describes the benefits and limitations of it and new challenges/future scope of the nanocomposites for the better future applications in different sectors.
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Nichitus, Simona, Gabriela Calin, Alexandra Burlui, Carmen Stadoleanu, and Vasile Burlui. "Layered Double Hydroxides (LDHs) Type Materials Used in Water Treatment." Key Engineering Materials 660 (August 2015): 273–78. http://dx.doi.org/10.4028/www.scientific.net/kem.660.273.

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Layered double hydroxides (LDHs) or LDHs matrices used for water treatment have been reviewed in this article. These aggregated nanoparticles can be obtained by sol-gel, hydrothermal or coprecipitation method, therefore their shape, size, properties (such as magnetic, acido-bazic, red-ox, texture and assembly) and applications are tailored as a function of synthesis method and process parameters respectively. Among other materials used in water treatment we chose layered double hydroxides generally named LDHs or in particular case hydrotalcites (MgAlLDHs). During calcination layered structure is destroyed giving rise to new structures like mixed oxides partially crystallized. LDHs and calcined LDHs type materials were able to uptake selected products. An important issue for removal of undesirable species for human health was M2+/M3+ cation ratio. Results show a better uptake of anionic compounds for thermally activated LDHs due to their “memory effect”. A large variety of LDHs was investigated in order to demonstrate their adsorption capacity for anionic compounds, cations, gas compounds even microorganisms. Nowadays one of the atractive issues of nanoscience is both the synthesis of these nanostructures and the assembly and organization way but the interest of scientists is to find new properties and applications in order to protect the environment. These cost effective, eco-friendly materials revealed new opportunities for waste water treatment.
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Ali, Md Eaqub, Mahbub Ullah, Azman Maamor, and Sharifah Bee A. Hamid. "Surfactant Assisted Ball Milling: A Simple Top down Approach for the Synthesis of Controlled Structure Nanoparticle." Advanced Materials Research 832 (November 2013): 356–61. http://dx.doi.org/10.4028/www.scientific.net/amr.832.356.

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The unlimited applications of nanoparticles in human life are increasing day by day. Nanoparticles have drawn attention among researchers from academia to industry due to its large specific surface area, high chemical reactivity, physical affinity and interesting optical, electrical and magnetic properties. These properties of nanoparticles stimulate researchers to reduce particle sizes from few sub micrometers to nanometer levels. The successful application of nanoparticles depends on the simplicity of the methods for its cost effective synthesis. Since the very beginning of nanoscience, development of simple, low cost and high yielding methods has been a challenging task. Various approaches were proposed for the commercial production of nanomaterials from solid state. However, chemical method which is complicated and expensive showed limited success in the synthesis of controlled structure nanoparticles from rare-earth solid compounds. Among all the approaches, high energy ball milling with surfactant has been widely exploited for the synthesis of various nanomaterials, nanograins, nanocomposites from solid state. Self-assembled structures of surfactants provide a valuable tool for the controlled formation of nanostructure. In this process, the dispersion and enhanced grinding of particles are achieved in the reaction centers that reside in the microstructure of surfactants. In high-energy ball milling, plastic deformation, cold-welding and fracture are predominant factors which lead to a change in particle shape, size. These result in the formation of fine and dispersed particles. Stirred ball mill grinding is advantageous for nanoparticle production over other fine grinding techniques owing to its easy operation, simple construction, high size reduction rate and relatively low energy consumption. The aim of this systematic review is to represent the basic concept and applications of mechanical milling in the surfactant assisted synthesis of various nanomaterial, nanocomposite and nanocarbon materials.
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Zhang, Haonan, and Amanda S. Barnard. "Impact of atomistic or crystallographic descriptors for classification of gold nanoparticles." Nanoscale 13, no. 27 (2021): 11887–98. http://dx.doi.org/10.1039/d1nr02258j.

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Nanoscience is multi-disciplinary and nanoparticles can be described in different ways. Using pattern recognition we show that choice of descriptors can influence the amount of detail from machine learning, but not necessarily the underlying trends.
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Borghi, F. F., A. E. Rider, S. Kumar, Z. J. Han, D. Haylock, and K. Ostrikov. "Emerging Stem Cell Controls: Nanomaterials and Plasma Effects." Journal of Nanomaterials 2013 (2013): 1–15. http://dx.doi.org/10.1155/2013/329139.

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Stem cells (SC) are among the most promising cell sources for tissue engineering due to their ability to self-renew and differentiate, properties that underpin their clinical application in tissue regeneration. As such, control of SC fate is one of the most crucial issues that needs to be fully understood to realise their tremendous potential in regenerative biology. The use of functionalized nanostructured materials (NM) to control the microscale regulation of SC has offered a number of new features and opportunities for regulating SC. However, fabricating and modifying such NM to induce specific SC response still represent a significant scientific and technological challenge. Due to their versatility, plasmas are particularly attractive for the manufacturing and modification of tailored nanostructured surfaces for stem cell control. In this review, we briefly describe the biological role of SC and the mechanisms by which they are controlled and then highlight the benefits of using a range of nanomaterials to control the fate of SC. We then discuss how plasma nanoscience research can help produce/functionalise these NMs for more effective and specific interaction with SCs. The review concludes with a perspective on the advantages and challenges of research at the intersection between plasma physics, materials science, nanoscience, and SC biology.
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Dissertations / Theses on the topic "Nanoscience. Nanoparticles. Nanostructured materials"

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Snyder, Brian. "An investigation into bimetallic hollow nanoparticles in catalysis." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47614.

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Nanocatalysis, catalysis using particles on the nanoscale, is an emerging field that has tremendous potential. Nanoparticles have different properties than bulk material and can be used in different roles. Macro sized precious metals, for example, are inert, but nanoparticles of them are becoming more widely used as catalysts. Understanding the manner in which these particles work is vital to improving their efficacy. This thesis focuses on two aspects of nanocatalysis. Chapter 1 begins with a brief introduction into nanotechnology and some of the areas in which nanoparticles are different than bulk particles. It then proceeds into an overview of catalysis and nanocatalysis more specifically. Focus is brought to the definitions of the different types of catalysis and how those definitions differ when applied to nanoparticles. Chapter 2 is in finding an inert support structure to more easily assist in recycling the nanoparticles. Polystyrene microspheres were studied and found to prevent platinum nanoparticles from aggregating in solution and possibly aid in recycling of the nanoparticles. These nanoparticles were used in catalysis, aiding in the reduction of 4-nitrophenol in the presence of sodium borohydride. While the rate decreased by a factor of ~ 7 when using the polystyrene, the activation energy of the reaction was unaltered, thus confirming the inactivity of the polystyrene in the reaction. In Chapter 3, nanocatalysis was studied by examining bimetallic hollow nanoparticles with specific attention to the effect of altering the ratios of the two metals. Ten different bimetallic nanocages were tested in an electron transfer reaction between hexacyanoferrate and thiosulfate. Five PtAg nanocages and five PdAg with varying metal ratios were prepared and studied. It was found that while silver cubes immediately precipitate out of solution when combined with thiosulfate, a small amount of either platinum or palladium allows the particles to remain in solution and function as a substantially more effective catalyst. However, as additional Pt was added the activation energy increased. To obtain a better understanding of the catalysis using bimetallic cages, the evolution of these cages was studied as the 2nd metal was added. Initially the particle edge length increased and then slowly decreased back to the size of the template cubes. The increase in edge length suggests of addition of material to the nanoparticles. This indicated the 2nd metal is on the outside of the cage, which was confirmed using UV-Vis spectroscopy and EDS mapping. By understanding how these bimetallic particles evolve, we may be able to manipulate these synthetic methods to more precisely design nanoparticles for catalysis.
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Chiu, Sheng-Kuei. "Photoluminescent Silicon Nanoparticles: Fluorescent Cellular Imaging Applications and Photoluminescence (PL) Behavior Study." PDXScholar, 2015. http://pdxscholar.library.pdx.edu/open_access_etds/2455.

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Molecular fluorophores and semiconductor quantum dots (QDs) have been used as cellular imaging agents for biomedical research, but each class has challenges associated with their use, including poor photostability or toxicity. Silicon is a semiconductor material that is inexpensive and relatively environmental benign in comparison to heavy metal-containing quantum dots. Thus, red-emitting silicon nanoparticles (Si NPs) are desirable to prepare for cellular imaging application to be used in place of more toxic QDs. However, Si NPs currently suffer poorly understood photoinstability, and furthermore, the origin of the PL remains under debate. This dissertation first describes the use of diatomaceous earth as a new precursor for the synthesis of photoluminescent Si NPs. Second, the stabilization of red PL from Si NPs in aqueous solution via micellar encapsulation is reported. Thirdly, red to blue PL conversion of decane-terminated Si NPs in alcohol dispersions is described and the origins (i.e., color centers) of the emission events were studied with a comprehensive characterization suite including FT-IR, UV-vis, photoluminescence excitation, and time-resolved photoluminescence spectroscopies in order to determine size or chemical changes underlying the PL color change. In this study, the red and blue PL was determined to result from intrinsic and surface states, respectively. Lastly, we determined that the blue emission band assigned to a surface state can be introduced by base addition in originally red-emitting silicon nanoparticles, and that red PL can be restored by subsequent acid addition. This experimentally demonstrates blue PL is surface state related and can overcome the intrinsic state related excitonic recombination pathway in red PL event. Based on all the data collected and analyzed, we present a simple energy level diagram detailing the multiple origins of Si NP PL, which are related to both size and surface chemistry.
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Radlinger, Christine Marie. "Investigation into Effects of Instability and Reactivity of Hydride-Passivated Silicon Nanoparticles on Interband Photoluminescence." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/3619.

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While silicon has long been utilized for its electronic properties, its use as an optical material has largely been limited due to the poor efficiency of interband transitions. However, discovery of visible photoluminescence (PL) from nanocrystalline silicon in 1990 triggered many ensuing research efforts to optimize PL from nanocrystalline silicon for optical applications. Currently, use of photoluminescent silicon nanoparticles (Si NPs) is commercially limited by: 1) the instability of the energy and intensity of the PL, and 2) the low quantum yield of interband PL from Si NPs. Herein, red-emitting, hydrogen-passivated silicon nanoparticles (H-Si NPs) were synthesized by thermally-induced disproportionation of a HSiCl3-derived (HSiO1.5)n polymer. The H-Si NPs produced by this method were then subjected to various chemical and physical environments to assess the long-term stability of the optical properties as a function of changing surface composition. This dissertation is intended to elucidate correlations between the reported PL instability and the observed changes in the Si NP surface chemistry over time and as a function of environment. First, the stability of the H-Si NP surface at slightly elevated temperatures towards reactivity with a simple alkane was probed. The H-Si NPs were observed by FT-IR spectroscopy to undergo partial hydrosilylation upon heating in refluxing hexane, in addition to varying degrees of surface oxidation. The unexpected reactivity of the Si surface in n-hexane supports the unstable nature of the H-Si NP surface, and furthermore implicates the presence of highly-reactive Si radicals on the surfaces of the Si NPs. We propose that reaction of alkene impurities with the Si surface radicals is largely responsible for the observed surface alkylation. However, we also present an alternate mechanism by which Si surface radicals could react with alkanes to result in alkylation of the surface. Next, the energy and intensity stability of the interband PL from H-Si NPs in the presence of a radical trap was probed. Upon addition of (2,2,6,6,-tetramethyl-piperidin-1-yl)oxyl (TEMPO), the energy and intensity of the interband transition was observed to change over time, dependent on the reaction conditions. First, when the reaction occurred at 4ºC with minimal light exposure, the interband transition exhibited a gradual hypsochromic shift to between 595 nm and 655 nm, versus the λmax of the original low energy emission peak at 700 nm, depending on the amount of TEMPO in the sample. Second, when the reaction proceeded at room temperature with frequent exposure to 360 nm irradiation, the original interband transition at 660 nm was quenched while a new peak at 575 nm developed. Based on all the data collected and analyzed, we assign the 595 -- 655 nm transition as due to interband exciton recombination from Si NPs with reduced diameters relative to the original Si NPs. We furthermore assign the 575 nm transition as due to an oxide-related defect state resulting from rapid oxidation of photo-excited Si NPs.
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Rafiei, Miandashti Ali. "Synthesis, Characterization, and Photothermal Study of Plasmonic Nanostructures using Luminescence Nanomaterials." Ohio University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1553788360252461.

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Hayden, Steven C. "Novel applications of nanotechnology in medicine and green energy." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/51927.

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The development of techniques for colloidal nanoparticle synthesis has allowed scientists to fabricate materials that can manipulate light on a scale that is small even compared to the wavelength of the light itself. This ability has led to the development of myriad and diverse applications of nanostructures in wide-ranging fields. This thesis focuses on the investigation and exploitation of nanoscale material properties in the fields of medicine and energy. The unique optical properties of nanoparticles arise from their size and their high surface area to volume ratios compared to bulk materials. As a result of this relationship, the surface characteristics of nanoparticles generally dominate their properties, whereas in bulk materials the surface atoms have very little bearing on the properties of the composite. Chapter 1 gives an introduction to nanoparticles and their optical properties, including a discussion of the plasmon resonance and the properties imbued upon nanoparticles possesing such a resonance as well as the applicability of these properties that will be explored in the subsequent chapters. Chapter 2 presents a study of the interaction of cationic, hydrophobic gold nanoparticles as probes to elucidate specific regions of interest on cell surfaces. The high imaging contrast of gold nanoparticles in electron microscopy allows for visual, macroscopic observation of the aggregation patterns formed by these nanoparticles on cell surfaces. Plasmon resonant coupling between proximal nanoparticles is exploited in order to monitor nanoprobe binding and localization over time with the use of extinction spectroscopy. The role of surface proteins in the nanoparticle-cell surface interaction is elucidated, generating composite data with relevance in pharmaceutical development and pharmacokinetics. Additionally, bacteria strain-dependent toxicity is observed and subsequently investigated for smaller gold nanoparticle probes, demonstrating a potential use for nanoparticles as strain-specific antibiotics. The development of affordable, effective antibiotic technology is one of the major scientific challenges of our time; infections from pathogen-infested drinking water alone account for millions of deaths each year worldwide. In Chapter 3, we investigate the use of titanium dioxide as an inexpensive method to harness solar energy to split water into reactive species and thereby decontamitate solutions of E. coli. Though titanium dioxide is an excellent catalyst for water splitting, it requires UV irradiation, which is fairly lacking in the solar emission spectrum. Further, recuperation of titanium dioxide nanoparticles from solution is non-trivial, and its immobilization into a film greatly limits its surface area and charge carrier efficiency, thereby limiting its activity. We treat both the poor visible light absorption capability as well as the surface area limitation in this study. CdS semiconductor nanocrystals are used to extend the absorption edge of TiO₂ further into the visible light region of the spectrum by providing for lower-energy photon absorption and charge injection into titanium dioxide. TiO₂ is also electrochemically anodized to generate TiO₂ nanotube arrays, which have greatly increased surface area as well as more efficient charge transfer properties compared to thin films of TiO₂ nanoparticles. The utility of nanoparticles in increasing the light absorption of other systems continues as a theme in the work presented in the next two chapters. Chapter 4 ex- amines the plasmonic enhancement of the solar energy conversion in a biomimetic system. In this endeavor, we enhance the photocurrent generated by a light-transducing, proton-pumping protein, bacteriorhodopsin, in a 3-dimensional wet electrochemical cell. First, we increase the overall charge carrier separation with the use of a proton- selective membrane in order to minimize ionic depolarization in the cell. We then use plasmonic nanoparticles to exploit an irregularity in the bacteriorhodopsin photocycle known as the blue light effect. This effect shortens the timescale of the photocyle by more than 99% via blue photon absorption, but it has a very low natural occurrence. Plasmonic nanoparticles tuned to the blue wavelength region increase the flux of blue photons on a local level and thereby increase the overall photocurrent generation. We first examine the importance of nanoparticle field strength to photocurrent enhancement using silver nanospheres with different capping shell thicknesses. We then consider the trade-off between (1) using a nanoparticle with a plasmon resonance tuned perfectly to the blue wavelength region and (2) using a nanoparticle with a stronger field intensity but weaker energetic presence in the blue. By minimizing ionic depolarization, minimizing shielding of the plasmon electromagnetic field, and maximizing the field strength while maintaining the plasmon frequency at the proper wavelength, we demonstrate an enhancement of 5,000-fold in the photocurrent production by bacteriorhodopsin. Chapter 5 explores a variation on the theme of Chapter 4 with an application in cancer therapeutics. Here, a photodynamic cancer drug, protoporphyrin IX (PpIX), is incorporated into complexes with silver nanospheres, gold nanospheres, and gold nanorods. Each of these nanoparticles displays a plasmon resonance in a different region of the spectrum, with consequent different overlap with the absorption or emission of the drug. Photodynamic therapeutic potential is measured in situ and in vivo, and the drug activity is shown to be strongest when drug absorption overlaps with plasmon resonance. Absorption by electronic excitations in the particle crystal lattice is shown to function as a competitive light filter and decrease drug activity. Additionally, the method of attachment of the drug to the nanoparticle is examined. Maximum enhancement of drug activity is shown to require the drug to remain bound close to the nanoparticle surface, where the electromagnetic field strength is highest. This plasmonic enhancement effect on drug activity is shown to outstrip the increase in drug activity seen when using the nanoparticle solely as a delivery platform. In Chapter 6, some synthetic techniques are presented for various nanomaterials. Included are syntheses for gold, silver, and semiconductor nanoparticles of a variety of shapes and sizes as well as for TiO₂ nanotube arrays. The relationship of the ratio of capping agent to metal salt is explored for gold nanospheres, and a method for facile tuning of the longitudinal plasmon resonance displayed by gold nanorods is presented. Synthetic techniques are also presented for the nanoparticles whose applications are explored in the preceding chapters.
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Repa, Kristen Lee Stojak. "Confinement Effects and Magnetic Interactions in Magnetic Nanostructures." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6573.

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Multifunctional nanocomposites are promising for a variety of applications ranging from microwave devices to biomedicine. High demand exists for magnetically tunable nanocomposite materials. My thesis focuses on synthesis and characterization of novel nanomaterials such as polymer nanocomposites (PNCs) and multi-walled carbon nanotubes (MWCNTs) with magnetic nanoparticle (NP) fillers. Magnetite (Fe3O4) and cobalt ferrite (CoFe2O4) NPs with controlled shape, size, and crystallinity were successfully synthesized and used as PNC fillers in a commercial polymer provided by the Rogers Corporation and poly(vinylidene fluoride). Magnetic and microwave experiments were conducted under frequencies of 1-6 GHz in the presence of transverse external magnetic fields of up to 4.5 kOe. Experiments confirm strong magnetic field dependence across all samples. When incorporated in to a cavity resonator device, tangent losses were reduced, quality factor increased by 5.6 times, and tunability of the resonance frequency was demonstrated, regardless of NP-loading. Work on PNC materials revealed the importance of NP interactions in confined spaces and motivated the study of confinement effects of magnetic NPs in more controlled environments, such as MWCNTs with varying diameters. MWCNTs were synthesized with diameters of 60 nm, 100 nm, 250 nm, and 450 nm to contain magnetic NP fillers (~10 nm) consisting of ferrites of the form MFe2O4, where M = Co2+, Ni2+, or Fe2+. All confined samples exhibit superparamagnetic-like behavior with stronger magnetic response with respect to increasing MWCNT diameter up to 250 nm due to the enhancement of interparticle interactions. This thesis provides the first systematic study of this class of nanocomposites, which paves the way to inclusion of novel nanostructured materials in real-world applications.
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Abeywickrama, Thulitha Madawa. "Metal-Organic Hybrid Nanocomposites For Energy Harvesting Applications." TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1748.

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Various synthetic methods have been developed to produce metal nanostructures including copper and iron nanostructures. Modification of nanoparticle surface to enhance their characteristic properties through surface functionalization with organic ligands ranging from small molecules to polymeric materials including organic semiconducting polymers is a key interest in nanoscience. However, most of the synthetic methods developed in the past depend widely on non-aqueous solvents, toxic reducing agents, and high temperature and high-pressure conditions. Therefore, to produce metal nanostructures and their nanocomposites with a simpler and greener method is indeed necessary and desirable for their nano-scale applications. Hence the objective of this thesis work is to develop an environmentally friendly synthesis method to make welldefined copper and iron nanostructures on a large-scale. The size and shape-dependent optical properties, solid-state crystal packing, and morphologies of nanostructures have been evaluated with respect to various experimental parameters. Nanostructures of copper and iron were prepared by developing an aqueous phase chemical reduction method from copper(II) chloride and Fe(III) chloride hexahydrate upon reduction using a mild reducing agent, sodium borohydride, under an inert atmosphere at room temperature. Well-defined copper nanocubes with an average edge length of 100±35 nm and iron nanochains with an average chain length up to 1.70 μm were prepared. The effect of the molar ratios of each precursor to the reducing agent, reaction time, and addition rate of the reducing agent were also evaluated in order to develop an optimized synthesis method for synthesis of these nanostructures. UV-visible spectral traces and X-ray powder diffraction traces were obtained to confirm the successful preparation of both nanostructrues. The synthesis method developed here was further modified to make poly(3-hexylthiophene) coated iron nanocomposites by surface functionalization with poly(3-hexylthiophene) carboxylate anion. Since these nanostructrues and nanocomposites have the ability to disperse in both aqueous-based solvents and organic solvents, the synthesis method provides opportunities to apply these metal nanostructures on a variety of surfaces using solution based fabrication techniques such as spin coating and spray coating methods.
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Popa, Adriana. "Study of the Effect of Nanostructuring on the Magnetic and Electrocatalytic Properties of Metals and Metal Oxides." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1427735465.

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Mangili, Benoit C. "Numerical models of nanostructured materials : Nanoparticles self-assembly." Thesis, Cranfield University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500326.

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Kariuki, Nancy N. "Nanostructured materials for electroanalytical applications." Diss., Online access via UMI:, 2005.

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Books on the topic "Nanoscience. Nanoparticles. Nanostructured materials"

1

Jelinek, Raz. Nanoparticles. Berlin: Walter de Gruyter GmbH & Co., KG, 2015.

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Adregno, Michael A. Nanocomposites, nanoparticles, and nanotubes. Hauppauge, N.Y: Nova Science Publishers, 2011.

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Nanoparticles: New research. Hauppauge, N.Y: Nova Science Publishers, 2008.

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Nanoparticles: Building blocks for nanotechnology. New York: Kluwer Academic/Plenum Publishers, 2004.

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Tayade, Rahesh J., and Ajay Bansal. Engineering applications of nanoscience and nanomaterials. Durnten-Zurich: Trans Tech, 2013.

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Sun, You Yi. Silver nanoparticles applied on photonics materials. Hauppauge, N.Y: Nova Science Publishers, 2009.

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Lu, Kathy. Nanoparticulate materials: Synthesis, characterization, and processing. Hoboken, New Jersey: Wiley, 2013.

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Sahu, S. N. Nano-scale materials: From science to technology. New York: Nova Science Publishers, 2004.

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9

Shinkinō biryūshi zairyō no kaihatsu to purosesu gijutsu: Development and processing technology of new function corpuscle materials. Tōkyō-to Chiyoda-ku: Shīemushī Shuppan, 2012.

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Olivier, Pluchery, ed. Gold Nanoparticles for Physics, Chemistry and Biology. Singapore: World Scientific Pub. Co., 2012.

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Book chapters on the topic "Nanoscience. Nanoparticles. Nanostructured materials"

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Bhoyate, Sanket, Pawan K. Kahol, and Ram K. Gupta. "Nanostructured materials for supercapacitor applications." In Nanoscience, 1–29. Cambridge: Royal Society of Chemistry, 2018. http://dx.doi.org/10.1039/9781788013871-00001.

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Šafařík, Ivo, and Mirka Šafaříková. "Magnetic Nanoparticles and Biosciences." In Nanostructured Materials, 1–23. Vienna: Springer Vienna, 2002. http://dx.doi.org/10.1007/978-3-7091-6740-3_1.

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Flagan, Richard C. "Nanoparticles and Nanostructures: Aerosol Synthesis and Characterization." In Nanostructured Materials, 15–30. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5002-6_2.

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Beachley, Vince, and Xuejun Wen. "Stem Cells and Nanostructured Materials." In NanoScience in Biomedicine, 1–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-49661-8_1.

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Jing, Peng, Jangwook P. Jung, and Joel H. Collier. "Nanostructured Materials Constructed from Polypeptides." In NanoScience in Biomedicine, 96–127. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-49661-8_5.

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Dragieva, Iovka, Christina Deleva, Mladen Mladenov, and Ivania Markova-Deneva. "Self-Organization of Magnetic Nanoparticles and Inclusion of Hydrogenby Borohydride Reduction." In Nanostructured Materials, 71–78. Vienna: Springer Vienna, 2002. http://dx.doi.org/10.1007/978-3-7091-6740-3_6.

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Soriano, Leonardo, Petri P. Ahonen, Esko I. Kauppinen, Jorge Gómez-García, Carmen Morant, Francisco J. Palomares, Marta Sánchez-Agudo, Patrick R. Bressler, and José M. Sanz. "Electronic Structure and Size of TiO2 Nanoparticles of Controlled Size Prepared by Aerosol Methods." In Nanostructured Materials, 113–21. Vienna: Springer Vienna, 2002. http://dx.doi.org/10.1007/978-3-7091-6740-3_11.

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Ye, Meidan, Xueqin Liu, James Iocozzia, Xiangyang Liu, and Zhiqun Lin. "Nanostructured Materials for High Efficiency Perovskite Solar Cells." In NanoScience and Technology, 1–39. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-32023-6_1.

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Cocchiara, Cristina, Bernardo Patella, Fabrizio Ganci, Maria Grazia Insinga, Salvatore Piazza, Carmelo Sunseri, and Rosalinda Inguanta. "Nanostructured Materials Obtained by Electrochemical Methods." In 21st Century Nanoscience – A Handbook, 23–1. Boca Raton, Florida : CRC Press, [2020]: CRC Press, 2020. http://dx.doi.org/10.1201/9780429340420-23.

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Murty, B. S., P. Shankar, Baldev Raj, B. B. Rath, and James Murday. "Nanostructured Materials with High Application Potential." In Textbook of Nanoscience and Nanotechnology, 176–213. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28030-6_6.

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Conference papers on the topic "Nanoscience. Nanoparticles. Nanostructured materials"

1

Meyyappan, M. "Nanotechnology: An Overview and Opportunities for Computational Modeling." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-3090.

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Abstract:
Nanotechnology is an enabling technology that is expected to have an impact on electronics, computing, data storage, materials and manufacturing, health and medicine, energy and environment, national security and other sectors. Fundamental to all this is development of nanostructured materials with novel and interesting properties. Examples include carbon nanotubes, inorganic nanowires, nanoparticles, quantum dots, dendrimers, etc. characterization of these nanomaterials and understanding their properties is the next important aspect of research in nanoscience and technology. Beyond these comes application development: devices, sensors, nanoelectromechanical systems (NEMS), composites, etc. to name a few. The talk will provide an overview of the above with carbon nanotubes (CNTs) and inorganic nanowires as nanomaterial examples.
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Juarez-Morales, J. C., J. Munoz-Lopez, and G. Martinez-Niconoff. "Study of light propagation through nanostructured materials." In NanoScience + Engineering, edited by Mikhail A. Noginov, Nikolay I. Zheludev, Allan D. Boardman, and Nader Engheta. SPIE, 2008. http://dx.doi.org/10.1117/12.793824.

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Valverde-Aguilar, Guadalupe, Víctor Rentería, and Jorge A. García-Macedo. "Modeling of core-shell silver nanoparticles in nanostructured sol-gel thin films." In NanoScience + Engineering, edited by Mark I. Stockman. SPIE, 2007. http://dx.doi.org/10.1117/12.730872.

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Montanari, Danielle E., Nathan Dean, Pete E. Poston, Steve Blair, and Joel M. Harris. "UV fluorescence enhancement from nanostructured aluminum materials." In SPIE Nanoscience + Engineering, edited by Gilles Lérondel, Satoshi Kawata, and Yong-Hoon Cho. SPIE, 2016. http://dx.doi.org/10.1117/12.2239108.

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Novotny, Clint, and Fred Sharifi. "Fabrication and characterization of nanostructured III-V thermoelectric materials." In SPIE NanoScience + Engineering, edited by Eva M. Campo, Elizabeth A. Dobisz, and Louay A. Eldada. SPIE, 2013. http://dx.doi.org/10.1117/12.2032673.

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Curley, Michael, Ashwith K. Chilvery, Tatiana Kukhatreva, Anup Sharma, John Corda, and Carlton Farley. "Development of nanostructured biocompatible materials for chemical and biological sensors." In SPIE NanoScience + Engineering, edited by Tom G. Mackay, Yi-Jun Jen, and Raúl J. Martín-Palma. SPIE, 2012. http://dx.doi.org/10.1117/12.930124.

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Fortunati, I., T. Dainese, R. Signorini, R. Bozio, V. Tagliazucca, S. Dirè, G. Lemercier, et al. "Photopolymerization of hybrid organic/inorganic materials based on nanostructured units for photonic applications." In NanoScience + Engineering, edited by Elizabeth A. Dobisz and Louay A. Eldada. SPIE, 2007. http://dx.doi.org/10.1117/12.733967.

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Morais, Andreia, Saulo do Amaral Carminati, and Ana Flavia Nogueira. "Nanostructured hybrid materials based on reduced graphene oxide for solar energy conversion." In SPIE Nanoscience + Engineering, edited by Artem A. Bakulin, Robert Lovrincic, and Natalie Banerji. SPIE, 2016. http://dx.doi.org/10.1117/12.2240029.

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Hernández, Margarita, Gonzalo Recio, Paz Sevilla, Vicente Torres-Costa, José V. García-Ramos, Concepción Domingo, and Raúl J. J. Martín-Palma. "Development of drug delivery systems based on nanostructured porous silicon loaded with the anti-tumoral drug emodin adsorbed on silver nanoparticles." In SPIE NanoScience + Engineering, edited by Tom G. Mackay, Yi-Jun Jen, and Raúl J. Martín-Palma. SPIE, 2012. http://dx.doi.org/10.1117/12.931117.

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Armstrong, Neal R., Dana Alloway, Amy Graham, Clayton Shallcross, Michael Brumbach, P. Alex Veneman, Diogenes Placencia, and Weining Wang. "Critical interfaces in new solar cell materials: organic heterojunctions and heterojunctions involving semiconductor nanoparticles." In NanoScience + Engineering, edited by Garry Rumbles and Oliver L. A. Monti. SPIE, 2008. http://dx.doi.org/10.1117/12.795451.

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