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Dissertations / Theses on the topic 'Carbon nanodot'

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Published: 1 April 2023

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1

Sahakalkan, Serhat [Verfasser], and David [Akademischer Betreuer] Wharam. "Spin Transport in Carbon Nanotubes with Circular Nanodot Contacts / Serhat Sahakalkan ; Betreuer: David Wharam." Tübingen : Universitätsbibliothek Tübingen, 2019. http://d-nb.info/1182985432/34.

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2

Kim, Tak Hyuan. "Synthesis and Applications of Carbon Nanodots." Thesis, Griffith University, 2016. http://hdl.handle.net/10072/366029.

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The study was set out to explore the synthesis of Carbon Nanodots (CDs) and their potential in practical applications in lighting, sensing and biological areas. Toxicity evaluation was also involved in the investigation, because of its profound importance in the real-world applications of CDs. The study sought to answer the following questions: 1) how does the photoluminescence change when we vary the surface functional moieties and change the chemical compositions by doping? 2) For light applications, are the CDs stable enough under the operational conditions? If not, how to improve their st
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Sciortino, Alice. "The Fundamental Photophysics of Fluorescent Carbon Nanodots." Doctoral thesis, Università di Catania, 2019. http://hdl.handle.net/10761/4125.

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Carbon Nanodots (CDs) are a new protagonist of carbon-based nanoscience by which the paradigm of carbon as a black material unable to emit light has been completely revolutionised. They have been emerging as a new frontier in Nanoscience at the beginning of 2000s, and their potential is evident from the explosion of the number of studies, now ranging in the thousands per year. CDs are nanoparticles composed by carbon, oxygen and hydrogen with a size smaller than 10 nm. Their most important hallmark is their strong luminescence, which is combined with many additional benefits as the low cost an
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BRUNO, Federico. "OPTICAL SENSING OF POLLUTANTS BY FLUORESCENT CARBON NANODOTS." Doctoral thesis, Università degli Studi di Palermo, 2022. http://hdl.handle.net/10447/560721.

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5

Carrara, Serena. "Towards new efficient nanostructured hybrid materials for ECL applications." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAF016/document.

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Cette thèse vise à développer de nouveaux matériaux hybrides pour les applications en électrochimiluminescence. Les propriétés électrochimiluminescentes de nouveaux complexes de Pt(II) et d’Ir(III) ont été explorés comme alternative aux marqueurs existants. En plus, la combinaison de complexes et de carbon nanodots portant des groupes primaires ou tertiaires à la surface comme espèces coréactives a abouti à une stratégie intéressante pour éliminer la TPrA. Les carbon nanodots dans un systéme lié par liaison covantent avec complexes métalliques sont non seulement un support innocent pour les es
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Yeom, Sin Hea. "TEMPERATURE-DEPENDENT TUNABLE PHOTOLUMINESCENCE PROPERTIES OF CARBON NANODOTS DERIVED FROM POLYETHYLENE GLYCOL." UKnowledge, 2014. http://uknowledge.uky.edu/chemistry_etds/46.

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Fluorescent carbon dots (C-dots) are well known for their low cell-cytotoxicity, biocompatibility, low preparation cost, excitation dependent photoluminescence, and excellent photostability. Typically, raw C-dots have low quantum efficiency and thus researchers have been utilizing biocompatible polymers such as polyethylene glycol (PEG) as a passivation agent in order to increase fluorescence signal. In this work, we report fluorescent self-passivated carbon nanodots (CNDs) synthesized from PEG by using it as a carbon source as well as a passivating agent. Importantly, the addition of graphene
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Newman, Peter Lionel Harry. "Carbon Nanotubes for Bone Tissue Engineering." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/16308.

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Biological tissues are compositionally and structurally exquisite – a complex network of proteins and cells organised with molecular-precision. Unfortunately, in the absence of an organ transplant or tissue graft, there are no technologies that can completely repair or restore this complex system when it fails. With the hopes of regenerating failing tissue, tissue engineers have developed scaffold structures able to support cell life. As yet, these structures are unable to recreate the complexities of the biological environment, limiting the success of this approach. Nanotechnologies have real
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Rolihlahla, Bangile Noel. "Electrochemistry and photophysics of carbon nanodots-decorated nigs(Ni(In, Ga)Se2) quantum dots." university of western cape, 2020. http://hdl.handle.net/11394/7309.

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>Magister Scientiae - MSc<br>Currently, non-renewable sources are mostly used to meet the ever-growing demand for energy. However, these sources are not sustainable. In addition to these energy sources being not sustainable, they are bad for the environment although the energy supply sectors highly depend on them. To address such issues the use of renewable energy sources has been proven to be beneficial for the supply of energy for the global population and its energy needs. Advantageous over non-renewable sources, renewable energy plays a crucial role in minimizing the use of fossil fuel and
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9

Li, Yibing. "Graphitic Carbon-Based Functional Nanomaterials for Environmental Remediation and Energy Conversion Applications." Thesis, Griffith University, 2015. http://hdl.handle.net/10072/366091.

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Carbon-based nanomaterials have attracted significant attention due to their unique optical, electrical, thermal and mechanical properties. In recent years, a large number of carbon-based nanomaterials have been investigated including carbon nanotubes, graphitic carbon nitride (g-C3N4), graphene, carbon nanofibers, carbon nanodots (CNDs), heteroatom-doped carbon, and carbon-based materials obtained from biomass etc. The unique and superior properties of such carbon-based materials make them useful for a wide range of applications in the fields such as environmental remediation and energy conve
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Yan, Huijie [Verfasser], and Alf [Akademischer Betreuer] Mews. "Triple labelled gold nanoparticles and fluorescent carbon nanodots as platforms for cell/nanoparticles interaction studies / Huijie Yan ; Betreuer: Alf Mews." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2020. http://d-nb.info/1215840527/34.

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11

Meiling, Till Thomas [Verfasser], Ilko [Akademischer Betreuer] Bald, and Hans-Gerd [Akademischer Betreuer] Löhmannsröben. "Development of a reliable and environmentally friendly synthesis for fluorescence carbon nanodots : preparation and characterisation of excellent and well-defined carbon nanodots by a fast, simple and cost-efficient synthesis method; with special focus on future exploration and large scale applications / Till Thomas Meiling ; Ilko Bald, Hans-Gerd Löhmannsröben." Potsdam : Universität Potsdam, 2018. http://d-nb.info/1219578592/34.

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12

Jiang, Zhoufeng Jiang. "Zero-dimensional and two-dimensional colloidal nanomaterials and their photophysics." Bowling Green State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1522964027555741.

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Yan, Huan. "MICRO- AND NANO-MATERIALS FOR DRUG DELIVERY AND BIOIMAGING APPLICATIONS." Kent State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=kent1428155172.

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Panta, Uday. "Charge Separation in Nano-diamonds: DFT Study." Bowling Green State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1594381914885325.

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RIGONI, FEDERICA. "EXPLORING DETECTION LIMITS AND RESPONSE TIME SCALES OF CHEMIRESISTOR GAS SENSORS BASED ON CARBON NANOTUBE AND HYBRID LAYERS." Doctoral thesis, Università degli Studi di Milano, 2015. http://hdl.handle.net/2434/262413.

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Crucial features in gas sensors for environmental monitoring are the gas sensitivity in the low ppb range and the ability to discriminate variations of a certain polluting gas from other interfering gases. Monitoring of ammonia gas concentrations is mandatory to reduce the hazard for human health and vegetation determined by the widespread use of ammonia derivatives as agricultural nitrogen fertilizers, industrial production and traffic. In particular, ammonia, besides being a toxic molecule is one of the main precursors of secondary fine particulate matter (PM10, PM2.5). Ammonia could hence
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HSIAO, PO-HSUAN, and 蕭伯諼. "Efficient Photodegradation of Dyes Using Carbon-Nanodot Heterostructure." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/zxusn6.

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碩士<br>國立暨南國際大學<br>應用材料及光電工程學系<br>106<br>Abstract The semiconductor heterostructures exhibited extremely excellent properties such as photovoltaics, energy materials, biomedicine, and environmental protection etc. In this study, a fast and simple two-step process of sonication and post-thermal was used to prepare functional Carbon-Nanodots. With the advantages of high photo-sensitivity, photo-resistance, and high yield 48.6 %, it was far exceeding the traditional thermal process [9-11]. Carbon-Nanodot were composed of graphitic crystal structures which was modified with functional groups such a
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Hsieh, You-Yang, and 謝佑陽. "Stable Luminescent Carbon-Nanodot Gel Glasses for Eco-Friendly Luminescent Solar Concentrator." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/xxt77c.

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碩士<br>中原大學<br>物理研究所<br>107<br>Luminescent Solar Concentrators, (LSCs) are composed of loaded luminophores and glass waveguides designed to efficiently harvest both incident and diffused solar irradiation devoid of complex solar tracking system. However, most of reported LSCs bank on on colloidal fluorescent materials with noble photophysical properties are frequently comprised of heavy metals and toxic organic solvents. In lieu of this, it is necessary to search for nanomaterials with excellent photo physical, yet considered to cause minimal harm to environment and human health. Carbon Dots (C
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HSIAO, HSIANG-TSE, and 蕭翔澤. "Carbon Nanodot Additives Realize High-Performance Air-Stable p–i–n Perovskite Solar Cells." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/89wn93.

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碩士<br>明志科技大學<br>材料工程系碩士班<br>107<br>Carbonized bamboo-derived carbon nanodots (CNDs) as efficient additives for application in perovskite solar cells (PSCs) are reported. These carboxylic acid- and hydroxyl-rich CNDs interact with the perovskite through hydrogen bonds and, thereby, promote the carriers’ lifetimes and realize high-performance p–i–n PSCs having the structure indium tin oxide/NiOx/CH3NH3PbI3 (MAPbI3)/PC61BM/BCP/Ag. As a result of interaction between the CNDs and the perovskite, the presence of the nonvolatile CND additive increases the power conversion efficiency (PCE) of the PSC
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王聖文. "Surface Modification of Reflux-Synthesized Carbon Nanodots." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/sy25ae.

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碩士<br>逢甲大學<br>化學工程學系<br>102<br>In the past few years, the rapid development of worldeconomy leads to energy crisis. Every country started to search for alternative energy sources because of the demanding energy consumption. So far, the highly valued renewable energy source is the solar energy, which is safe, pollution-free, and noiseless. Currently, the solar cellsfor practicaluses are mainly silicon-based. Although their conversion efficiency can reach as high as 30%, the manufacturing cost is too high. Therefore, several organic photovoltaic cells have been developed. Compared toother types
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Hsu, Pin-Che, and 徐斌哲. "Synthesis and Applications of Photoluminescent Carbon Nanodots." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/00744008479588662690.

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碩士<br>國立臺灣大學<br>化學研究所<br>100<br>This study aims to develop an environmentally benign method for the preparation of multifunctional carbon dots (C-dots). In chapter one, We have discussed a green synthetic approach for the preparation of photoluminescent C-dots from used coffee grounds. This is the first example of the large-scale hydrothermal synthesis of C-dots from used coffee grounds, which demonstrated two analytical applications [cell imaging and surface-assisted laser desorption/ionization-mass spectrometry (SALDI-MS)] showing its great practical potential. In chapter two, a highly water
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Liao, Wei-Cheng, and 廖偉程. "Manipulation of Random Lasers Assisted by Plasmonic Carbon Nanodots." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/xv7aa5.

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碩士<br>國立臺灣大學<br>物理學研究所<br>105<br>Carbon nanodots emerge as popular materials in various research fields, including biological and photovoltaic areas, while there lacks significant reports related to their applications in laser devices, which play a significant role in our daily life. In this work, we demonstrate the first controllable random laser assisted by the surface plasmon effect of carbon nanodots. Briefly, carbon nanodots derived from candle soot are randomly deposited on the surface of gallium nitride (GaN) nanorods to enhance the ultraviolet fluorescence of GaN and generate plasmonic
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羅文鍵. "Enhancement of the Quantum Yield of Hydrothermally Synthesized Carbon Nanodots." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/r33r7h.

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碩士<br>逢甲大學<br>化學工程學系<br>102<br>This study prepared carbon nanodots (CNDs) by the hydrothermal method using precursors such as L-glutamine, L-glutamic acid, L-ascorbic acid, and egg white. The solvent was deionized water. It is expected to enhance the quantum yield (QY) of the hydrothermal product by adding in different additives in the hydrothermal process. The synthesized CNDs were analyzed using the laser particle sizer, UV-Vis spectrometer, and fluorescence spectrometer. The results showed that the CNDs were all less than 100 nm in diameter, that they emitted purple light between 380 nm and
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Yang, Chiachen, and 楊佳珍. "Investigation of titania nanorod/carbon nanotube composite photocatalysts." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/84117739439463561205.

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碩士<br>東海大學<br>環境科學與工程學系<br>99<br>In the present study, a microwave-assisted hydrothermal method was used to prepare titanium nonorods (TNRs) and TNR/multi-wall carbon nanotube （TNR/MWCNT） photocatalysts in relatively short time. The composites were characterized by Multi-Function Scanning Electron Microscope （SEM）、Transmission Electron Microsopy（TEM）、X-ray Powder Diffractometer（XRD）、BET surface area、Diffuse Reflectance UV-visible Spectrophotometer（UV-Vis spectrophotometer）、X-ray Photoelectron Spectroscopy（XPS）、X-ray Absorption Spectroscope（XAS）and their photocatalytic activities were tested by
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Chang, Che-Yuan, and 張哲元. "Effect of Chain Length of Dicarboxylic Acids on Photoluminescence of Green Carbon Nanodots." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/75415535431216376675.

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碩士<br>中山醫學大學<br>應用化學系碩士班<br>103<br>This research is to investigate the relation between the length of carbon chain as carbon source and quantum yield (QY), and how to obtain the maximum QY using a green and simple method - hydrothermal synthesis, to produce series of fluorescent carbon dots (CDs). To carry out the experiment, five variations of dicarboxylic acids with different length of carbon chain as carbon source are used. They are then doped with different proportions of ethylenediamine(EDA) which acts as a representative surface passivation agent, and with magnesium hydroxide (Mg(OH)2) a
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林明翰. "Effects of Sulfuric Acid on Quantum Yield of Hydrothermally Synthesized Fluorescent Carbon Nanodots." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/18348610745125003077.

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碩士<br>逢甲大學<br>化學工程學系<br>104<br>Since the discovery in 2004, fluorescent carbon nanodots (FCNDs) have received wide attention due to their excellent biocompatibility and fluorescence. The fluorescent property enables FCNDs to be applied to bioimaging, biosensing, and photocatalysis. To effectively increase the quantum yield (QY) of FCNDs has been an issue of study. The hydrothermal method is widely used to synthesize FCNDs because of simple operation among other methods such as laser ablation and microwave heating. The basic principle of the hydrothermal method is to put the precursor of carbon
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Lin, Yaling, and 林雅玲. "Electrochemical Preparation of Photoluminescent Carbon Nanodots and Their Application as Copper Ions Sensor." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/8twenm.

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碩士<br>國立臺灣大學<br>化學研究所<br>106<br>We used a simple, fast, eco-friendly electrochemical strategy to prepare carbon nanodots (C dots) from histidine under alkaline conditions by applying a constant voltage of 10 V at room temperature without using any toxic chemicals and organic solvents. The effects of concentrations of histidine, pH, reaction time and sodium halides such as sodium chloride (NaCl), sodium bromide (NaBr), and sodium iodide (NaI) on the properties of as-prepared C dots were investigated. The optimal conditions to prepare C dots are 0.63 M histidine, pH 9.0 and 1 M sodium halides. T
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Tsai, Tsung-Tang, and 蔡宗唐. "Characteristics of carbon nanotube and ZnO nanorod field effect transistors." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/27065566981456303466.

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碩士<br>國立中興大學<br>物理學系所<br>98<br>In this thesis, we fabricated multi-wall carbon nanotube and ZnO nanorods field effect transistors(FETs) with electron beam lithography. The FETs we make are kinds of measurements, we found out the multi-wall carbon nanotube field effect transistors are P-type FETs. The threshold voltage is around -1V. and the on-off ratio is around 3.10. We also measured the electrical properties of multi-wall carbon nanotubes. The current is exponential growing with voltage. Detailed measurements indicates that the junction of gold and carbon nanotubes is Schottky contact. Th
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Yueh, Yao-Pin, and 岳耀彬. "Carbon Nanodots-based Electrochemical Immunosensor For Label Free Hepatoma- Derived Growth Factor (HDGF) Detection." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/335w52.

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碩士<br>義守大學<br>生物技術與化學工程研究所<br>102<br>Hepatoma-derived growth factor (HDGF), originally isolated from the cultured media of human hepatoma HuH-7 cells, stimulate the growth of fibroblast cells, endothelial cells, and hepatoma cells. Overexpression of HDGF has been proved to be related to the transformation of human hepatoma, lung cancer and melanoma. However, the measurement of HDGF is still a tedious and challenging task. Herein, a disposable, label-free electrochemical immunosensor based on carbon nanodot /chitosan nanocomposite modified screen-printed electrode was developed for the detect
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Chang, Hsin-Yueh, and 張心悅. "Application and characteristics of carbon nanorod synthesized by radio frequency magnetron sputtering." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/41874671361931766174.

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博士<br>國立臺灣科技大學<br>電子工程系<br>103<br>We present a method for growing carbon nano rods (CNR), an allotrope of 1-D carbon, using radio frequency magnetron sputtering at low temperature. We first investigate how the growth temperature (from room temperature to 380℃) and sputtering gas (Ar and N2) influence the CNR morphology and structure. The resulting CNRs were observed to be aligned vertically onto the substrate with uniform length exhibiting an amorphous structure with semiconducting properties. The CNR morphology did not change obviously but the crystallinity was enhanced with an increase in th
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Lin, Chia-Wei, and 林嘉偉. "The Study of Hyaluronic Acid Conjugated Carbon Nanodots as a Tracking Label for Mesenchymal Stem Cells." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/utn956.

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碩士<br>中原大學<br>生物醫學工程研究所<br>105<br>Cell tracking labels with excellent biocompatibility, ease of use, resistance to photobleach and long-lasting efficiency are needed. Carbon nanodots (CDs) have high water solubility, low toxicity, photostability and fluorescent property which can be used in the areas of biosensing, bioimaging, light emitting device and drug carrier. In this study, carbon dots low molecules (CD-Ls) and carbon dots high molecules (CD-Hs) were synthesized by low molecular weight and high molecular weight polyethyleneimine (PEI) by microwave assisted pyrolysis. Furthermore, CD-Ls
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Chen, Po-Lin, and 陳柏林. "Anodic aluminum oxide template assisted growth and electron field emission of carbon nanotubes and titanium oxide nanodots." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/03139024654847640948.

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博士<br>國立交通大學<br>材料科學與工程系所<br>93<br>Ordered arrays of carbon nanotubes (CNTs) and titanium oxide (TiO2) nanodots have been successfully prepared by using the nanoporous anodic aluminum oxide (AAO) films as templates. Nanoporous AAO templates with hexagonal pore arrangement were prepared by the two-step anodization of aluminum films. Highly aligned CNTs were grown in vertical channels of the AAO template by microwave plasma electron cyclotron resonance chemical vapor deposition (ECR-CVD). The segments of CNTs stretching out of the AAO nanopores still maintain relatively good alignment, and have
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Hsu, Chan-Wei, and 許展瑋. "Sandwiched Nanostructure of Hydrogenated Carbon Doped TiO2 Nanoparticle/Nitrogen Doped Carbon/Rutile TiO2 Nanorod Array for Efficient Photoelectrochemical Water Oxidation." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/s93xy3.

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Weng, Yu-Hsuan, and 翁于軒. "Fabrication of Highly Efficient Piezoelectric ZnO Nanorod Arrays by Using Conducting Polymer/Carbon Nanotube Hybrid substrates." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/wnnb4z.

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碩士<br>國立臺北科技大學<br>有機高分子研究所<br>101<br>In this study, ZnO nanorods have been synthesized via wet chemical method on PEDOT/MWNTs polymer nanocomposite materials. The study is divided into three parts. First, PEDOT conductive film was prepared by the method of “In situ oxidative polymerization”. The effect of conductivity of different acid-treated carbon nanotubes in the PEDOT film was investigated. Second, we use alkalis to react with zinc acetate to prepare nanoscale ZnO particles in solution, which were spin coated on the substrate several times so that it can be covered with ZnO seed layers. F
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Tseng, Tzu-chieh, and 曾子杰. "Fabrication and study of single-walled Carbon Nanotubes Nanonet Based Organic Heterojunction Thin Film Solar Cell." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/48365643070833685555.

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碩士<br>國立成功大學<br>航空太空工程學系碩博士班<br>97<br>Carbon nanotube, a kind of different Carbon allotrope, with unique mechanical and electrical science identities, is the core that many researches focus on. Between different nano devices, carbon nanotube has outstanding potency. Organic solar energy cells possess many advantages: flexibility, low-cost, and easy processing technologies and so on, has distinctive position in solar energy cells. This research using Alcohol Catalytic Chemical Vapor Deposition to develop growth of single-wall carbon nanotube and combine with organic polymer thin film, to produc
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TSAI, SHIN-CHIEH, and 蔡信傑. "Influence of Carbon Nanotube or Graphene Layers on The Characteristics of ZnO Nanorod-based Hydrogen Sensors." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/65359070220778821940.

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碩士<br>國立暨南國際大學<br>應用材料及光電工程學系<br>105<br>In this thesis, ZnO nanorods (NRs) were grown on SiO2 substrates by sol-gel/hydrothermal methods to form hydrogen gas sensing chips. To improve the hydrogen sensing capabilities, a layer of carbon nanotube (CNT) or a layer of graphene layer were sandwiched between the ZnO NRs and the SiO2 substrate, respectively. To characterize the ZnO NRs deposited in various conditions, multiple material analyses including field-emission scanning electron microscope (FESEM), X-ray diffraction (XRD), photoluminescence (PL), transmission electron microscope (TEM) and e
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Hsu, Chia-Chi, and 許嘉琦. "Amorphous Carbon Nanotubes and Porous ZnO/C Core-shell Nanorod Arrays：novel preparation and applications in photo-sensing devices." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/29975653911460040264.

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碩士<br>國立高雄大學<br>化學工程及材料工程學系碩士班<br>98<br>Well-aligned amorphous carbon nanotube (a-CNT) arrays were fabricated for the first time by a proposed deposition-etching-evaporation (D.E.E.) route. The a-CNT arrays were prepared by deposition of carbon on the surface of well-aligned ZnO nanorod (NR) arrays by thermal decomposition of acetone followed by spontaneous etching and evaporation of core-ZnO. By utilizing the decomposition of acetone as well as distinct degrees of interaction between intermediate products and ZnO, well-aligned nonporous ZnO/C core-shell NR, porous ZnO/C core-shell NR, and a-C
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Ghosh, Siddharth. "Nanoscale Photonics." Doctoral thesis, 2016. http://hdl.handle.net/11858/00-1735-0000-0023-3ED4-2.

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