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Journal articles on the topic 'NanoStack'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Dong-qing, Y., Z. Ming, and C. Lan. "Femtosecond laser micromachining of an Au/Cr film nanostack." Laser Physics 18, no. 9 (2008): 1092–97. http://dx.doi.org/10.1134/s1054660x08090168.

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2

Haider, Golam, Yen‐Hsiang Wang, Farjana J. Sonia, et al. "Rippled Nanostack Phototransistor: Rippled Metallic‐Nanowire/Graphene/Semiconductor Nanostack for a Gate‐Tunable Ultrahigh‐Performance Stretchable Phototransistor (Advanced Optical Materials 19/2020)." Advanced Optical Materials 8, no. 19 (2020): 2070075. http://dx.doi.org/10.1002/adom.202070075.

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3

Diaz Leon, Juan J., Kate J. Norris, J. Joshua Yang, John F. Sevic, and Nobuhiko P. Kobayashi. "A niobium oxide-tantalum oxide selector-memristor self-aligned nanostack." Applied Physics Letters 110, no. 10 (2017): 103102. http://dx.doi.org/10.1063/1.4977945.

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Haider, Golam, Yen‐Hsiang Wang, Farjana J. Sonia, et al. "Rippled Metallic‐Nanowire/Graphene/Semiconductor Nanostack for a Gate‐Tunable Ultrahigh‐Performance Stretchable Phototransistor." Advanced Optical Materials 8, no. 19 (2020): 2000859. http://dx.doi.org/10.1002/adom.202000859.

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5

D’Hollander, Antoine, Greetje Vande Velde, Hilde Jans, et al. "Assessment of the Theranostic Potential of Gold Nanostars—A Multimodal Imaging and Photothermal Treatment Study." Nanomaterials 10, no. 11 (2020): 2112. http://dx.doi.org/10.3390/nano10112112.

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Gold nanoparticles offer the possibility to combine both imaging and therapy of otherwise difficult to treat tumors. To validate and further improve their potential, we describe the use of gold nanostars that were functionalized with a polyethyleneglycol-maleimide coating for in vitro and in vivo photoacoustic imaging (PAI), computed tomography (CT), as well as photothermal therapy (PTT) of cancer cells and tumor masses, respectively. Nanostar shaped particles show a high absorption coefficient in the near infrared region and have a hydrodynamic size in biological medium around 100 nm, which a

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6

Shiohara, Amane;, Sergey; Novikov, Diego M.; Solís, José M.; Taboada, Fernando; Obelleiro, and Luis M. Liz-Marzán. "Plasmon modes and hot spots in gold nanostar-satellite clusters." Journal of Physical Chemistry C 119, no. 20 (2015): 10836–43. https://doi.org/10.1021/jp509953f.

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Gold nanostars display strong electromagnetic field enhancement at their tips, and tip plasmon resonances can be tuned within the visible and near-infrared, which has been applied toward plasmonic molecular sensing. However, the sensitivity can be further increased by linking gold nanostars to other plasmonic nanoparticles and thereby inducing the creation of hot spots. We report the controlled formation of core–satellite assemblies comprising a central gold nanostar with gold spheres adsorbed to the tips via Raman active molecular linkers. Surface-enhanced Raman scattering (SERS) was recorded

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Spedalieri, Cecilia, Gergo Péter Szekeres, Stephan Werner, Peter Guttmann, and Janina Kneipp. "Probing the Intracellular Bio-Nano Interface in Different Cell Lines with Gold Nanostars." Nanomaterials 11, no. 5 (2021): 1183. http://dx.doi.org/10.3390/nano11051183.

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Gold nanostars are a versatile plasmonic nanomaterial with many applications in bioanalysis. Their interactions with animal cells of three different cell lines are studied here at the molecular and ultrastructural level at an early stage of endolysosomal processing. Using the gold nanostars themselves as substrate for surface-enhanced Raman scattering, their protein corona and the molecules in the endolysosomal environment were characterized. Localization, morphology, and size of the nanostar aggregates in the endolysosomal compartment of the cells were probed by cryo soft-X-ray nanotomography

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Mulder, Danielle Wingrove, Masauso Moses Phiri, Anine Jordaan, and Barend Christiaan Vorster. "Modified HEPES one-pot synthetic strategy for gold nanostars." Royal Society Open Science 6, no. 6 (2019): 190160. http://dx.doi.org/10.1098/rsos.190160.

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Gold nanostars are being used more regularly in the biosensing field. Despite their useful attributes, there is still a need to optimize aspects of the synthesis and stability. The seedless, synthetic method comprising 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) is a facile, rapid method; however, it produces heteromorphic nanostars. The modification of a HEPES method resulted in a silver-assisted, seedless gold nanostar synthesis method. The nanostars resulting from this method were monodispersed, multi-branched and approximately 37 ± 2 nm in diameter. It proved to be a repeata

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G, Oyunbileg, Batnyagt G, Enkhsaruul B, and T. Takeguchi. "Synthesis and electrocatalytic activity towards oxygen reduction reaction of gold-nanostars." Mongolian Journal of Chemistry 18, no. 44 (2018): 36–40. http://dx.doi.org/10.5564/mjc.v18i44.935.

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The oxygen reduction reaction (ORR) is a characteristic reaction which determines the performance of fuel cells which convert a chemical energy into an electrical energy. Aims of this study are to synthesize Au-based nanostars (AuNSs) and determine their preliminary electro-catalytic activities towards ORR by a rotating-disk electrode method in alkaline electrolyte. The images obtained from a scanning electron microscope (SEM) and a transmission electron microscope (TEM) analyses confirm the formation of the star-shaped nanoparticles. Among the investigated nanostar catalysts, an AuNS5 with sm

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Ghazal, Huda A., and Nabeel E. Arif. "Atom Bound Connectivity, Zagreb, Sombor, Nirmala and Harmonic Indices of Dendrimers." Samarra Journal of Pure and Applied Science 5, no. 3 (2023): 178–89. http://dx.doi.org/10.54153/sjpas.2023.v5i3.610.

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A nanostar is a very small molecule ranging in size from 1-100 nanometers. It is typically composed of materials such as polymers, silica and others. Nanostars are of great significance in various fields, including drug technology, energy technology and other applications. The topological index is a numerical depiction of a molecular structure. Within chemical graphs, the atoms and the chemical bonds connecting them are symbolized by vertices and edges, respectively. Topological indices help to predict the topological properties of nanostar dendrimers, such as molecular weight and size. In thi

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11

Serrano-Montes, A.B., J. Langer, M. Henriksen-Lacey, et al. "Gold Nanostar-Coated Polystyrene Beads as Multifunctional Nanoprobes for SERS Bioimaging." Journal of Physical Chemistry C 120, no. 37 (2016): 20860–68. https://doi.org/10.1021/acs.jpcc.6b02282.

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Hybrid colloidal nanocomposites comprising polystyrene beads and plasmonic gold nanostars are reported as multifunctional optical nanoprobes. Such self-assembled structures are excellent Raman enhancers for bioapplications as they feature plasmon modes in the near-infrared "first biological transparency window". In this proof of concept study, we used 4-mercaptobenzoic acid as a Raman-active molecule to optimize the density of gold nanostars on polystyrene beads, improving SERS performance and thereby allowing in vitro cell culture imaging. Interestingly, intermediate gold nanostar l

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12

Parui, Ramen Kumar. "Commentary on “Cosmic Baby and the Detection of a New Compact Star —the “Triaxial Star” : A Possibility”." Journal of Nanotechnology and Nanomaterials 5, no. 2 (2024): 56–60. https://doi.org/10.33696/nanotechnol.5.054.

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The article represents a commentary for the recent publication on Cosmic Baby. The aim of this communication is to highlight three invaluable applications in searching the triaxial stars, such as (i) in the secondary component of the GW190814 event (ii) Neo-Natal triaxial star, iii) Gold nanostar inside the crust of neutron star. A similar of rod-like, cube-like, slab-like structure formation both in the earth-based laboratory, and in the space-based laboratory inside the neutron star crust offer a challenge to the astronomers, scientists to search for i) The production of gold nanostar in spa

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Gu, Qiong Chan, Xiao Xiao Jiang, Jiang Tao Lv, and Guang Yuan Si. "Manipulating the Profile of Nanostars." Advanced Materials Research 1049-1050 (October 2014): 15–18. http://dx.doi.org/10.4028/www.scientific.net/amr.1049-1050.15.

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Using electron-beam lithography and ion milling techniques, we fabricate nanostar biosensors with different shapes and various designs to show tunable plasmon resonances. We also demonstrate further profile control over the outlines of nanostars and both under-and over-etched particles are achieved and compared. Moreover, the tunability of such plasmon-based sensors can find extensive and important applications in spectroscopy and enhanced biosensing.

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Indrasekara, A. S. D. S., S. Meyers, S. Shubeita, L. C. Feldman, T. Gustafsson, and L. Fabris. "Gold nanostar substrates for SERS-based chemical sensing in the femtomolar regime." Nanoscale 6, no. 15 (2014): 8891–99. http://dx.doi.org/10.1039/c4nr02513j.

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A SERS sensor based on gold nanostars is described. The size and sharpness of the nanostar spikes are tuned to maximize sensitivity and SERS enhancement, yielding a detection limit of 10<sup>−15</sup> M and an enhancement factor of 10<sup>9</sup>. The effectiveness of the sensor is proven for both chemisorbed and physisorbed analytes under non-resonant conditions and its multiplexing capability is demonstrated.

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Espinosa, A., A.K.A. Silva, nchez-Iglesias A. S, et al. "Cancer Cell Internalization of Gold Nanostars Impacts Their Photothermal Efficiency In Vitro and In Vivo: Toward a Plasmonic Thermal Fingerprint in Tumoral Environment." Advanced Healthcare Materials 5, no. 9 (2016): 1040–48. https://doi.org/10.1002/adhm.201501035.

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Gold nanoparticles are prime candidates for cancer thermotherapy. However, while the ultimate target for nanoparticle-mediated photothermal therapy is the cancer cell, heating performance has not previously been evaluated in the tumoral environment. A systematic investigation of gold nanostar heat-generating efficiency in situ is presented: not only in cancer cells in vitro but also after intratumoral injection in vivo. It is demonstrated that (i) in aqueous dispersion, heat generation is governed by particle size and exciting laser wavelength; (ii) in cancer cells in vitro, heat generation is

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16

Chatterjee, Sharmistha, Loredana Ricciardi, Julia Deitz, Robert Williams, David McComb, and Giuseppe Strangi. "Heterodimeric Plasmonic Nanogaps for Biosensing." Micromachines 9, no. 12 (2018): 664. http://dx.doi.org/10.3390/mi9120664.

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We report the study of heterodimeric plasmonic nanogaps created between gold nanostar (AuNS) tips and gold nanospheres. The selective binding is realized by properly functionalizing the two nanostructures; in particular, the hot electrons injected at the nanostar tips trigger a regio-specific chemical link with the functionalized nanospheres. AuNSs were synthesized in a simple, one-step, surfactant-free, high-yield wet-chemistry method. The high aspect ratio of the sharp nanostar tip collects and concentrates intense electromagnetic fields in ultrasmall surfaces with small curvature radius. Th

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Litti, L., J. Reguera, de Abajo FJ García, M. Meneghetti, and LM. Liz-Marzan. "Manipulating chemistry through nanoparticle morphology." Nanoscale Horizons 5, no. 1 (2020): —108. https://doi.org/10.1039/C9NH00456D.

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We demonstrate that the protonation chemistry of molecules adsorbed at nanometer distances from the surface of anisotropic gold nanoparticles can be manipulated through the effect of surface morphology on the local proton density of an organic coating. Direct evidence of this remarkable effect was obtained by monitoring surface-enhanced Raman scattering (SERS) from mercaptobenzoic acid and 4-aminobenzenethiol molecules adsorbed on gold nanostars. By smoothing the initially sharp nanostar tips through a mild thermal treatment, changes were induced on protonation of the molecules, which can be o

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Litti, Lucio, Javier Reguera, de Abajo F. Javier García, Moreno Meneghetti, and Luis M. Liz-Marzán. "Manipulating chemistry through nanoparticle morphology." Nanoscale Horizons 5 (June 5, 2020): 102–8. https://doi.org/10.1039/c9nh00456d.

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We demonstrate that the protonation chemistry of molecules adsorbed at nanometer distances from the surface of anisotropic gold nanoparticles can be manipulated through the effect of surface morphology onthelocal proton densityofanorganic coating. Direct evidence of this remarkable effect was obtained by monitoring surface-enhanced Raman scattering (SERS) from mercaptobenzoic acid and 4-aminobenzenethiol molecules adsorbed on gold nanostars. By smoothing the initially sharp nanostar tips through a mild thermal treatment, changes were induced on protonation of the molecules, which can

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19

Vo, Khuong Quoc, Hong Tong Thi, Phuong Phong Thi Nguyen, and Phuc Thanh Hoàng. "Synthesis of gold nanostar using chitosan as reductive agent by the seedless reduction method." Science and Technology Development Journal - Natural Sciences 4, no. 4 (2020): 760–66. http://dx.doi.org/10.32508/stdjns.v4i4.934.

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The gold nanostars (AuNS) were prepared through seedless reductive method by using the natural biodegradable polymer chitosan acting both as the stabilizing and shape-directing agent, ascorbic acid as a reducting agent. This reaction synthesis was carried out at room temperature and facile conditions. In an effort to control the size and shape of AuNS, many experimental parameters were investigated for the thorough understanding the role of chitosan in the formation of gold nanostar. In this novel method, the pH condition and appropriate stabilizer concentration were crucial factors to prepare

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Munyayi, Tozivepi Aaron, Barend Christiaan Vorster, and Danielle Wingrove Mulder. "The Effect of Capping Agents on Gold Nanostar Stability, Functionalization, and Colorimetric Biosensing Capability." Nanomaterials 12, no. 14 (2022): 2470. http://dx.doi.org/10.3390/nano12142470.

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Capping agents (organic ligands, polymers, and surfactants) are pivotal for stabilizing nanoparticles; however, they may influence the surface chemistry, as well as the physico-chemical and biological characteristics, of gold nanostar (AuNS)-based biosensors. In this study, we proved that various capping agents affected capped and bioconjugated AuNS stability, functionality, biocatalysis, and colorimetric readouts. Capped and bioconjugated AuNSs were applied as localized surface plasmon resonance (LSPR)-based H2O2 sensors using glucose oxidase (GOx) as a model enzyme. Furthermore, our analyses

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21

Liu, Yang, Pakawat Chongsathidkiet, Bridget M. Crawford, et al. "Plasmonic gold nanostar-mediated photothermal immunotherapy for brain tumor ablation and immunologic memory." Immunotherapy 11, no. 15 (2019): 1293–302. http://dx.doi.org/10.2217/imt-2019-0023.

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Brain tumors present unique therapeutic challenges and they include glioblastoma (GBM) and metastases from cancers of other organs. Current treatment options are limited and include surgical resection, radiation therapy, laser interstitial thermal therapy and chemotherapy. Although much research has been done on the development of immune-based treatment platforms, only limited success has been demonstrated. Herein, we demonstrate a novel treatment of GBM through the use of plasmonic gold nanostars (GNS) as photothermal inducers for synergistic immuno photothermal nanotherapy (SYMPHONY), which

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22

Kwong, Tsz-Lung, and Ka-Fu Yung. "Surfactant-Free Microwave-Assisted Synthesis of Fe-Doped ZnO Nanostars as Photocatalyst for Degradation of Tropaeolin O in Water under Visible Light." Journal of Nanomaterials 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/190747.

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Iron-doped zinc oxide nanostar was synthesized by the microwave-assisted surfactant-free hydrolysis method. The as-synthesized Fe-doped ZnO nanostars catalyst was fully characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), powder X-ray diffraction (XRD), and diffuse reflectance UV-vis spectroscopy (UV-DRA). The photocatalytic activity of the photocatalyst was investigated for the photocatalytic degradation of Tropaeolin O under visible light irradiation. It is observed that the doping of Fe ions enhances the abs

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Huynh, Phat Trong, Tuan Van Huynh, Uyen Vo Phuong Pham, et al. "DEVELOPMENT OF GOLD NANOSTARS DOPED FLEXIBLE SUBSTRATE FOR POLYSTYRENE MICROPLASTIC DETECTION USING SURFACE-ENHANCED RAMAN SCATTERING (SERS)." Detritus, no. 31 (June 30, 2025): 127–33. https://doi.org/10.31025/2611-4135/2025.19498.

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Microplastics are plastic fragments smaller than 5 millimeters, originating from primary sources such as manufactured beads and fibers and secondary degradation of larger plastic materials. As a significant environmental pollutant, microplastics require sensitive and efficient detection techniques. This study presents a simple and cost-effective surface-enhanced Raman scattering method using a flexible substrate composed of gold nanostars deposited on filter paper. Polystyrene particles with an average size of approximately 0.5 µm were used as a model microplastic pollutant to evaluate the per

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Wu, Mingzhu, Jianhang Lin, Da Zheng, et al. "Engineering Branched Au@Ag Nanostar Plasmonic Array for Coupling Electromagnetic Enhancement and SERS Trace Detection of Polystyrene in Aquatic Environments." Chemosensors 11, no. 10 (2023): 531. http://dx.doi.org/10.3390/chemosensors11100531.

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Micro/nanoplastics are widespread in the environment and may cause severe damage to creatures and human beings. Micro/nanoplastic pollution has become a global focus issue; hence, the rapid and accurate detection of micro/nanoplastics is an essential step to ensure health. Herein, we report a surface-enhanced Raman scattering (SERS) technique to sensitively and quantitatively identify micro/nanoplastics in environmental water samples. A three-dimensional hierarchical Au@Ag nanostar (NSs) was synthesized and employed as an efficient SERS substrate. The “lightning rod effect” generated by tip br

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Tran, Thi Nhung. "Synthesis and Characterization of Hybrid Nanocomposites of Gold Nanostars Encapsulated on Graphene Oxide as Active SERS Nanotags." Journal of Technical Education Science, no. 70B (June 28, 2022): 80–85. http://dx.doi.org/10.54644/jte.70b.2022.1155.

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Hybrid nanocomposites of gold nanostars and graphene oxide exhibit intriguing optical and electrical properties derived from the sharp-tip effect of nanostars and the high conductivity of honeycomb structure from C-sp2 hybridization of graphene-based materials. This work presents a facile way to wrap graphene oxide nano-colloids surrounding the as-prepared gold nanostars via the assistance of linker molecules, 4-aminothiophenol, as effective nanotags. Upon tightly binding to the surface of gold nanostars via gold- thiol interactions, 4-aminothiophenol can modify the surface of gold nanostars p

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Vo, Quoc Khuong, My Nuong Nguyen Thi, Phuong Phong Nguyen Thi, and Duy Trinh Nguyen. "Green and Facile Synthesis of Dendritic and Branched Gold Nanoparticles by Gelatin and Investigation of Their Biocompatibility on Fibroblast Cells." Processes 7, no. 9 (2019): 631. http://dx.doi.org/10.3390/pr7090631.

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In this work, gold nanostar (AuNPs) and gold nanodendrites were synthesized by one-pot and environmentally friendly approach in the presence of gelatin. Influence of gelatin concentrations and reaction conditions on the growth of branched (AuNPs) were investigated further. Interestingly, the conversion of morphology between dendritic and branched nanostructure can be attained by changing the pH value of gelatin solution. The role of gelatin as a protecting agent through the electrostatic and steric interaction was also revealed. Branched nanoparticles were characterized by surface plasmon reso

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Zhu, Yuting, Quanmei Sun, Yingzhu Liu, et al. "Decorating gold nanostars with multiwalled carbon nanotubes for photothermal therapy." Royal Society Open Science 5, no. 8 (2018): 180159. http://dx.doi.org/10.1098/rsos.180159.

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Gold nanoparticles and carbon nanotubes have attracted substantial attention in recent years for their potential applications in photothermal therapy (PTT) as an emerging breakthrough in cancer treatment. Herein, a hybrid nanomaterial of gold nanostars/multiwalled carbon nanotubes (MWCNTs) was synthesized by two-step reduction via the control of several synthetic conditions such as the reducing agent, pH value, concentration and ratio of reagents. The material shows good biocompatibility and high photothermal conversion efficiency, demonstrating its applicability in PTT. The lack of surfactant

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Huynh, Phat Trong, Giang Dang Nguyen, Khanh Thi Le Tran, et al. "One-Pot, Surfactant-Free Synthesis of Gold Nanostars and Evaluation of Their Antibacterial Effects against Propionibacterium acnes." Journal of Nanomaterials 2021 (March 6, 2021): 1–10. http://dx.doi.org/10.1155/2021/6650661.

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Anisotropic gold nanoparticles, especially gold nanostars, are used in many fields of biomedical applications such as sensing, targeted drug delivery, and diagnostic and photothermal therapy. In this study, we introduced a novel application of gold nanostars as an antimicrobial agent. While spherical gold nanoparticles have an inappreciable effect, gold nanostars exhibit significant antibacterial activity. Besides, the seed-mediated method, a conventional technique for preparing gold nanostars, is rather complex and toxic to human and environment due to unsafe synthesized materials such as sur

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Oliveira, Maria João, Miguel P. de Almeida, Daniela Nunes, et al. "Design and Simple Assembly of Gold Nanostar Bioconjugates for Surface-Enhanced Raman Spectroscopy Immunoassays." Nanomaterials 9, no. 11 (2019): 1561. http://dx.doi.org/10.3390/nano9111561.

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Immunoassays using Surface-Enhanced Raman Spectroscopy are especially interesting on account not only of their increased sensitivity, but also due to its easy translation to point-of-care formats. The bases for these assays are bioconjugates of polyclonal antibodies and anisotropic gold nanoparticles functionalized with a Raman reporter. These bioconjugates, once loaded with the antigen analyte, can react on a sandwich format with the same antibodies immobilized on a surface. This surface can then be used for detection, on a microfluidics or immunochromatographic platform. Here, we have assemb

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Makhsin, Siti Rabizah. "Amplifying Fibre Optic Sensor Signals with Graphene Oxide-Silver Nanostars." Journal of Mechanical Engineering 21, no. 3 (2024): 297–317. http://dx.doi.org/10.24191/jmeche.v21i3.27359.

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This work presents a straightforward yet impactful method to enhance optical fibre sensor signals by integrating silver nanostars (AgNS) with graphene oxide (GO-AgNS) as a sensing material. AgNS were synthesized successfully via a one-step chemical reduction method using hydroxylamine as a reducing agent. The concentration of hydroxylamine was varied (7.2, 3.6, 1.8, and 0.9) x 10−4 %v/v to optimize AgNS formation, with the longest spike of the nanostar observed at lower hydroxylamine concentrations, as confirmed by transmission electron microscopy (TEM). UV-visible measurements revealed the hi

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Zhao, Fu Jun, Lin Hai Han, and Long Liang. "Catalyst-Free Synthesis of Mullite Nanosticks." Key Engineering Materials 368-372 (February 2008): 812–14. http://dx.doi.org/10.4028/www.scientific.net/kem.368-372.812.

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The nonstoichiometric Al-rich single crystal mullite nanosticks were prepared by sol-gel method without any catalysts. The nanosticks are straight and uniform with a width of 300-350nm and length of 3-5m. The nanosticks’ growth direction is along[210] . Detailed structural characterizations suggested that the growth of this novel nonstoichiometric structure was induced by the self-catalyzed process.

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Liu, Qi-Yu, Yao Zhong, Zheng-Zhi Jiang, et al. "A controlled growth of triangular AuCu alloy nanostars and high photocatalytic activities of AuCu@CdS heterostars." Journal of Materials Chemistry C 8, no. 14 (2020): 4869–75. http://dx.doi.org/10.1039/d0tc00098a.

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Metallic nanostars have tunable plasmon resonances and high photocatalytic activities; however, controlling the number and length uniformity of branches for the colloidal nanostars is still a challenge.

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Razmi, Nasrin, Sreymean Ngok, Magnus Willander, Xianjie Liu, and Omer Nur. "Synthesis and Characterization of Silver-Plated Gold Nanostars for Biomedical and Sensing Applications." Materials Science Forum 1108 (December 12, 2023): 85–94. http://dx.doi.org/10.4028/p-i4y4as.

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The physiochemical and optical characteristics of nanoscale colloids rely on their chemical composition, shape, and size. Gold nanostars are anisotropic multibranched nanoparticles with a central core and several sharp delicate tips, command significant attention in nanodiagnostic, imaging and sensing applications. Anisotropic nanoparticle’s shape, size and tips are of a great importance dominating their properties and performance in biomedical applications and sensing strategies which require optimization. Several factors can affect these features. In this regard, silver seed mediated goldnan

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Frisk, M. "Seeing nanostars." Science 347, no. 6220 (2015): 384–85. http://dx.doi.org/10.1126/science.347.6220.384-g.

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Muller, L. "Exosomen: Nanostaub?" HNO 68, no. 2 (2020): 111–14. http://dx.doi.org/10.1007/s00106-019-00787-y.

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Bian, Ting, Biao Sun, Sai Luo, et al. "Seed-mediated synthesis of Au@PtCu nanostars with rich twin defects as efficient and stable electrocatalysts for methanol oxidation reaction." RSC Advances 9, no. 61 (2019): 35887–94. http://dx.doi.org/10.1039/c9ra06893g.

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We present a seed-mediated approach to generate Au@PtCu nanostars with a five-fold twinned structure. The Au@PtCu nanostars exhibited better electrocatalytic properties in terms of activity and stability toward MOR relative to commercial Pt/C.

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Tsebrenko, Mariya, Victoriya Rezanova, and Irina Tsebrenko. "Polypropylene Microfibers with a Filler in the Nanostate." Chemistry & Chemical Technology 4, no. 3 (2010): 253–60. http://dx.doi.org/10.23939/chcht04.03.253.

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The physico-chemical regularities of polypropylene microfibers obtained via processing polypropylene/copolyamide (PP/CPA) mixture melts filled with nanosilicas have been investigated. It has been shown that the chemical nature of silica functional groups affects the viscosity of PP/CPA melts. In spite of the solid state of additives the filling effect does not occur or reveals weakly. Silicas do not prevent the polypropylene fiber-forming in a copolyamide matrix but improve it. This is explained by the stabilizing action of silica additives on PP liquid streams. Nanofilled polypropylene microf

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Simonenko, Andrey V., Grigoriy K. Savelyev, El-Khih Ayya Nidal, Vitaly A. Khanadeev, and Elena S. Tuchina. "Gold nanostars as a photoagent under the antimicrobial action of infrared (808 nm) laser radiation." Izvestiya of Saratov University. Chemistry. Biology. Ecology 23, no. 1 (2023): 86–93. http://dx.doi.org/10.18500/1816-9775-2023-23-1-86-93.

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Gold nanostars with an average core diameter of 122,2 nm and a spike length of 114,6 nm were synthesized and characterized at a concentration of 5,36×1010 pcs/ml with an absorption maximum of 840 nm. Gold nanostars were coated with thiolated polyethylene glycol, its amount was about 8×104 molecules per 1 particle and about 4,4×1015 molecules/ml in the colloid. The zeta potential of gold nanostars coated with PEG-SH was −2.3 mV. The combined effect of gold nanostars and low-intensity infrared (808 nm) laser radiation on the bacteria Staphylococcus aureus 209 P and Escherichia coli 113-13 has be

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Kanyiri, Jael, Frank Omwoyo, Patrick Shem, and Geoffrey Otieno. "Optimization of Cassava-Peel Derived Nanostarch Via Sulphuric Acid Hydrolysis Using Taguchi Method." Journal of Biomaterials 8, no. 2 (2024): 23–32. http://dx.doi.org/10.11648/j.jb.20240802.11.

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Untreated cassava peel waste generated during harvesting and processing poses significant environmental challenges. Synthesis of starch nanoparticles from cassava peels for various applications offers a sustainable solution to waste reduction and contributes to environmental conservation. The unique characteristics of nanostarch such as thermal stability, high solubility, non-toxicity, and low cost enable its application in the food industry, cosmetics, enhanced oil recovery, and textiles. The current study employed the Taguchi method design to optimize sulphuric acid hydrolysis in synthesizin

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Ke, Yan, Bin Chen, Mengen Hu, Ningning Zhou, Zhulin Huang, and Guowen Meng. "In-Situ Monitoring the SERS Spectra of para-Aminothiophenol Adsorbed on Plasmon-Tunable Au@Ag Core–Shell Nanostars." Nanomaterials 12, no. 7 (2022): 1156. http://dx.doi.org/10.3390/nano12071156.

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Plasmon-induced photocatalysis on noble metal surfaces has attracted broad attention due to its application in sunlight energy conversion, while the selectivity of plasmonic platforms remains unclear. Herein, we present the controlled plasmon-mediated oxidation of para-aminothiophenol (p-ATP) by employing Au@Ag core–shell nanostars with tunable tip plasmons in visible–near-infrared range as reactors. In-situ Raman measurements indicate that Au@Ag core–shell nanostars essentially promote the conversion of p-ATP to 4,4′-dimercaptoazobenzene (DMAB) due to hot carriers excited by localized surface

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Revnic, Radu Nicolae, Gabriela Fabiola Știufiuc, Valentin Toma, et al. "Facile Microwave Assisted Synthesis of Silver Nanostars for Ultrasensitive Detection of Biological Analytes by SERS." International Journal of Molecular Sciences 23, no. 15 (2022): 8830. http://dx.doi.org/10.3390/ijms23158830.

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We report a very simple, rapid and reproducible method for the fabrication of anisotropic silver nanostars (AgNS) that can be successfully used as highly efficient SERS substrates for different bioanalytes, even in the case of a near-infra-red (NIR) excitation laser. The nanostars have been synthesized using the chemical reduction of Ag+ ions by trisodium citrate. This is the first research reporting the synthesis of AgNS using only trisodium citrate as a reducing and stabilizing agent. The key elements of this original synthesis procedure are rapid hydrothermal synthesis of silver nanostars f

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de Almeida, Miguel Peixoto, Carla Rodrigues, Ângela Novais, et al. "Silver Nanostar-Based SERS for the Discrimination of Clinically Relevant Acinetobacter baumannii and Klebsiella pneumoniae Species and Clones." Biosensors 13, no. 2 (2023): 149. http://dx.doi.org/10.3390/bios13020149.

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The development of rapid, reliable, and low-cost methods that enable discrimination among clinically relevant bacteria is crucial, with emphasis on those listed as WHO Global Priority 1 Critical Pathogens, such as carbapenem-resistant Acinetobacter baumannii and carbapenem-resistant or ESBL-producing Klebsiella pneumoniae. To address this problem, we developed and validated a protocol of surface-enhanced Raman spectroscopy (SERS) with silver nanostars for the discrimination of A. baumannii and K. pneumoniae species, and their globally disseminated and clinically relevant antibiotic resistant c

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Pattabiraman, K., M. Kameswari, and M. Seenivasan. "Generalized Version of <i>ISI</i> Invariant for some Molecular Structures." Materials Science Forum 1048 (January 4, 2022): 221–26. http://dx.doi.org/10.4028/www.scientific.net/msf.1048.221.

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Degree related topological invariants are the bygone and most victorioustype of graph invariants so far. In this article, we are interested in finding the generalized inverse indeg invariant of the nanostar dendrimers D[r],fullerene dendrimerNS4[r], and polymer dendrimerNS5[r]. Keywords: nanotubes; inverse indeg invariant; nanostar dendrimers; fullerene dendrimer; polymer dendrimer

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Rashid, Muhammad Aamer, Sarfraz Ahmad, Murat Cancan, and Mehwish Hussain Muhammad. "Topological Properties of Nanostar Dendrimer and Smart Polymer." Journal of Chemistry 2020 (April 21, 2020): 1–12. http://dx.doi.org/10.1155/2020/1280632.

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The nanostar dendrimers are a piece of another gathering of macromolecules that seem, by all accounts, to be photon pipes simply like counterfeit reception apparatuses. In addition, nanostar dendrimers are one of the fundamental stuffs of nanobiotechnology. The smart polymers are large-scale particles that show an emotional physioconcoction change because of little changes in their condition, for example, temperature, pH, light, attractive field, and ionic variables. A topological record of a graph G is a numeric quantity notorious with G which portrays subatomic diagram G. In this paper, we d

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Crichton, Nicola J., and M. J. R. Healy. "NANOSTAT: Version P5.1." Applied Statistics 42, no. 2 (1993): 415. http://dx.doi.org/10.2307/2986252.

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Avdeychik, S.V., V.A. Goldade, V.A. Strukc, A.S. Antonov, and A.G. Ikromov. "Implementation of Nanostate Phenomenon in Materials Science of Functional Nanocomposites Based on Industrial Polymers." Электронная обработка материалов 1, no. 57 (2021): 7–18. https://doi.org/10.5281/zenodo.4456708.

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The conceptual directions of creating functional composites based on polymer matrices for metal-polymer systems are considered. An algorithm has been developed to develop a methodology for the implementation of the nanostate phenomenon in materials science and in the technology of composites and metal-polymer systems. The methodological principles of the implementation of the nanostate phenomenon in materials science and in the technology of functional materials based on polymer matrices for metal-polymer systems with high performance characteristics are proposed.

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Chen, Qijie, Liling Zhou, Jiaqi Zou, and Jianhui Wang. "Response surface optimization of process conditions and characteristics of nanostarch-based biocomposite film reinforced by cellulose nanocrystals." BioResources 14, no. 2 (2019): 4344–57. http://dx.doi.org/10.15376/biores.14.2.4344-4357.

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Nanostarch has attracted much research interest recently due to its biodegradability and biocompatibility. A type of biocomposite film based on corn nanostarch (CNS) as the matrix and cellulose nanocrystals (CNC) as the reinforcement was prepared using a solution casting method. The influences of corn nanostarch concentration (CCNS), glycerin dosage (Dg), and cellulose nanocrystals dosage (DCNC) on the tensile strength of the biocomposite film were investigated by central composite design. The results were examined by an analysis of variance (ANOVA) and response surface methodology (RSM). The

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Atta, Supriya, Michael Beetz, and Laura Fabris. "Understanding the role of AgNO3 concentration and seed morphology in the achievement of tunable shape control in gold nanostars." Nanoscale 11, no. 6 (2019): 2946–58. http://dx.doi.org/10.1039/c8nr07615d.

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Bae, Young K. "Creating nanostars with buckyballs." Physics Letters A 377, no. 45-48 (2013): 3304–11. http://dx.doi.org/10.1016/j.physleta.2013.10.036.

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Sánchez-Iglesias, Ana, Javier Barroso, Diego M. Solís, et al. "Plasmonic substrates comprising gold nanostars efficiently regenerate cofactor molecules." Journal of Materials Chemistry A 4, no. 18 (2016): 7045–52. http://dx.doi.org/10.1039/c6ta01770c.

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