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The functional roles of retinal homeobox genes in zebrafish retinal development and an introduction to silica nanomaterial toxicity in zebrafish embryos /Nelson, Steve M. January 1900 (has links)
Thesis (Ph. D., Neuroscience)--University of Idaho, October 2009. / Major professor: Deborah L. Stenkamp. Includes bibliographical references. Also available online (PDF file) by subscription or by purchasing the individual file.
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Fabrication and geometrical characterization of metal and metal-dielectric composite periodic nanostructures /Bhowmik, Siddhartha. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2010. / Printout. Includes bibliographical references (leaves 204-213). Also available on the World Wide Web.
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Application of laser-based diagnostics for nanomaterials synthesisLiu, Xiaofei, January 2009 (has links)
Thesis (Ph. D.)--Rutgers University, 2009. / "Graduate Program in Mechanical and Aerospace Engineering." Includes bibliographical references.
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Characteristics of graphitic films for carbon based magnetism and electronicsHong, Jeongmin January 2009 (has links)
Thesis (Ph. D.)--University of California, Riverside, 2009. / Includes abstract. Available via ProQuest Digital Dissertations. Title from first page of PDF file (viewed March 19, 2010). Includes bibliographical references. Also issued in print.
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Epoxy-clay nanocomposites : morphology, moisture absorption behavior and thermo-mechanical properties /Hu, Chugang. January 2004 (has links)
Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references. Also available in electronic version. Access restricted to campus users.
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Improved durability and thermal stability of glass fiber reinforced composites using clay-polymer nanocomposites /Liu, Mingyang. January 2009 (has links)
Includes bibliographical references (p. 80-83).
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Contributions to statistical learning and statistical quantification in nanomaterialsDeng, Xinwei. January 2009 (has links)
Thesis (Ph.D)--Industrial and Systems Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Wu, C. F. Jeff; Committee Co-Chair: Yuan, Ming; Committee Member: Huo, Xiaoming; Committee Member: Vengazhiyil, Roshan Joseph; Committee Member: Wang, Zhonglin. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Nanoparticle transport in porous medium and nanosized zero-valent iron(nZVI) for environmental remediationZhai, Guiming., 翟桂明. January 2010 (has links)
published_or_final_version / Civil Engineering / Master / Master of Philosophy
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Tribological behaviour of anodised alumina nanohoneycombsWang, Shuo, 王硕 January 2012 (has links)
Anodic alumina nanohoneycombs (AAO) have been widely used because of its convenient fabrication and controllable pores’ geometry. A lot of investigations have been conducted to study its physical and chemical properties. However, the mechanical properties, especially tribological properties, of such a popular nanomaterial still remain almost unknown.
In this project, a series of scratch experiments were conducted on AAO films fabricated by a two-step anodisation method. The testing system is a G200 Nanoindenter provided by Agilent Corporation. A standard diamond Berkovich tip is used as the scratch tip. A scanning electron microscope was used to image the microstructure of the material deformation after scratching. Strengths of AAO domains with different pore regularities were compared by performing the scratch tests at constant normal loads crossing the boundaries separating these domains. Ramping load tests were carried out to show the effects of the normal load on the deformation and friction of the AAO. Scratch cycles and velocities were also varied to see their influence on friction and wear.
The results show that the more ordered AAO structure has higher strength than disordered counterparts under scratch testing. The friction coefficient reduces rapidly on increasing normal load, and an explanation of this unusual behaviour is offered by considering the row-by-row deformation of the AAO structure. In multicycle scratch tests, the friction reaches a maximum at the fourth cycle. A step-like deformation behaviour was observed when the scratch velocity became extremely large, and this is probably due to the dynamic response of the instrument. / published_or_final_version / Mechanical Engineering / Master / Master of Philosophy
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Synthesis of photosensitizing molecules and fabrication of inorganic nanostructures for dye-sensitized solar cellChan, Hung-tat., 陳鴻達. January 2012 (has links)
Dye-sensitized solar cells (DSSC) have drawn much attention due to their
higher versatility and lower production cost compared to inorganic photovoltaics.
The top performers of DSSC have achieved power conversion efficiency over
10%, which is comparable to amorphous silicon solar cells. In this work, new
photosensitizers and nanostructure for improving the photovoltaic performance of
DSSC were developed and evaluated.
Two series of cyclometalated ruthenium(II) complex photosensitizer were
presented and their photosensitizing properties in DSSC were studied. Eight
cyclometalated ruthenium(II) terpyridine complexes with three carboxylic acid
groups on the terpyridine ligand were synthesized. Series A (M1 to M4) consist of
C,N,N’ ligands substituted with phenyl group whereas series B (M5 to M8)
consist of C,N,N’ ligands substituted with m-fluorophenyl group. All of the
complexes exhibited broad aborption spectra covering the whole visible spectrum.
The complexes in series B generally showed better photovoltaic performance than
those in series A in the DSSCs. DSSC fabricated from M7 achieved the highest
Voc, Jsc and power conversion efficiency among other DSSC, which were 0.56 V,
7.30 mAcm-2 and 2.63 % respectively.
Truxene-core donor--acceptor dyes were presented and their
photosensitizing properties in DSSC were studied. Eight dyes with either one
donor two acceptors system (T2, B2, T2R and B2R) or two donor one acceptor
system (T1, B1, T1R and B1R) were synthesized. Dyes with two acceptors have
high molar extinction coefficients originated from the charge-transfer transition
band, which are almost two times higher than those with only one accceptors.
Both the enhanced absorption and better anchoring geometry on TiO2 contribute
to the better photovoltaic performance of the two acceptors dyes in the DSSCs.
Devices fabricated from B2 and volatile solvent electrolyte exhibited the best
photovoltaic performance among the truxene-core dyes. The Voc, Jsc, FF and
power conversion efficiency of the device were 0.59 V, 9.69 mAcm-2, 0.63 and
3.62 % respectively. Dyes based on cyanoacrylic acid anchoring groups (T1, T2,
B1 and B2) were found to perform better than those based on rhodanine-3-acetic
acid dyes (T1R, T2R, B1R and B2R) in both donor--acceptor configurations.
ITO nanorod/TiO2 nanoparticle composite films with the three different
types of ITO nanorod with different length (150 nm, 600 nm and 1.5 μm) were
fabricated on FTO glass substrate. The transmittance and sheet resistance of the
ITO nanorod array on the FTO glass substrate were found decreased with
increasing the length of the ITO nanorod. When the ITO nanorod/TiO2
nanoparticle composite films were applied as the anode in DSSCs, the device
fabricated from 600 nm ITO nanorod with TiO2 ‘double layer‘ film showed
enhanced photocurrent generation. The improved photocurrent generation is
suggested to be due to an improved charge collection efficiency at the ITO
nanorod back electrode. / published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy
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