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Torrey Pines Scientific Hotplate Calibration, GERALD G. LOPEZ 2016 Singh Center for Nanotechnology

Torrey Pines Scientific Hotplate Calibration, Gerald G. Lopez

Protocols and Reports

This document outlines the standard operating procedure to calibrate the Torrey Pines Scientific hot plates of the University of Pennsylvania Quattrone Nanofabrication Facility.


Suss Microtec Ma6 Gen3 – Microchem Spr-220 7.0 Thickness Vs. Dose-To-Clear And Contrast Curve Data, Steven Wood, Gerald G. Lopez 2016 University of Pennsylvania

Suss Microtec Ma6 Gen3 – Microchem Spr-220 7.0 Thickness Vs. Dose-To-Clear And Contrast Curve Data, Steven Wood, Gerald G. Lopez

Protocols and Reports

The SOP for MicroChem SPR-220 7.0 at the Quattrone Nanofabrcation Facility is provided along with thickness vs. dose-to-clear and contrast curve data. The document is intended to provide a starting point when using MicroChem SPR-220 7.0.


Kinetics Of Length Scale Dependent Deformation Of Gold Microspheres And Micropillars, A Z M Ariful Islam 2016 The University of Western Ontario

Kinetics Of Length Scale Dependent Deformation Of Gold Microspheres And Micropillars, A Z M Ariful Islam

Electronic Thesis and Dissertation Repository

In this thesis length and time scale dependence of the operative plastic deformation mechanisms in Au is studied. Uniaxial compression tests were performed at various loading rates on FIB-milled Au micropillars and single-crystalline Au microspheres of diameter ranging from 0.8 to 6.0 µm to investigate the incipient and bulk plasticity events. Constant-load ambient-temperature creep tests were performed on the micropillars to study the time-dependent plasticity at very slow strain rates. Uniaxial compression tests were also performed on coated Au microspheres to study the effect of extrinsic constraint on the deformation mechanisms.

During uniaxial compression, both the Au micropillars ...


Iot In Automotive Industry - Connecting Cars.Pdf, Luis Arce-Plevnik, Avital Cohen, Tamara Shor 2016 Politecnico di Milano

Iot In Automotive Industry - Connecting Cars.Pdf, Luis Arce-Plevnik, Avital Cohen, Tamara Shor

Luis Arce-Plevnik

In the world we live today there is an increasing demand for smart and
connected devices. These devices enable us to complete tasks, enhance
experiences and perform processes in a smoothie way. Such tendency will
continue in growth, therefore by 2020, the 90% of brand new manufactured cars
will feature a built-in connectivity, growing from less than 10% today.

When extrapolating the concept of IoT to the automotive industry, we can
summarize it into three main branches. On one side, we have the connectivity
between vehicles, which is related to connectivity from one vehicle to two or
more vehicles (vehicle-to-vehicle ...


Iot In Automotive Industry - Connecting Cars.Pdf, Luis Arce-Plevnik, Avital Cohen, Tamara Shor 2016 Politecnico di Milano

Iot In Automotive Industry - Connecting Cars.Pdf, Luis Arce-Plevnik, Avital Cohen, Tamara Shor

Luis Arce-Plevnik

In the world we live today there is an increasing demand for smart and
connected devices. These devices enable us to complete tasks, enhance
experiences and perform processes in a smoothie way. Such tendency will
continue in growth, therefore by 2020, the 90% of brand new manufactured cars
will feature a built-in connectivity, growing from less than 10% today.

When extrapolating the concept of IoT to the automotive industry, we can
summarize it into three main branches. On one side, we have the connectivity
between vehicles, which is related to connectivity from one vehicle to two or
more vehicles (vehicle-to-vehicle ...


Molecular Combing Of Dna Nanofibers And Comparison To Electrospinning, Tanner L. Buresh 2016 University of Nebraska-Lincoln

Molecular Combing Of Dna Nanofibers And Comparison To Electrospinning, Tanner L. Buresh

UCARE Research Products

The goal of these experiments was to create DNA nanofibers through the method of molecular combing (MC) and then compare the MC fibers to fibers created with electrospinning (ES). The experiment was designed and initial samples were created. After confirming that the method would succeed in creating DNA fibers, several parametric studies were performed in order to optimize the experiment and create the most uniform fibers possible. The parametric studies were done on the following variables: substrate material, pH level of DNA solution, and DNA solution concentration. After completion of all experiments, it was determined that although fibers could be ...


Science System Path-Dependencies And Their Influences: Nanotechnology Research In Russia, Maria Karaulova, Abdullah Gok, Oliver Shackleton, Philip Shapira 2016 University of Manchester; Scuola Superiore Sant’Anna, Pisa

Science System Path-Dependencies And Their Influences: Nanotechnology Research In Russia, Maria Karaulova, Abdullah Gok, Oliver Shackleton, Philip Shapira

Philip Shapira

In this paper, we study the influence of path dependencies on the development of an emerging technology in a transitional economy. Our focus is the development of nanotechnology in Russia in the period between 1990 and 2012. By examining outputs, publication paths and collaboration patterns, we identify a series of factors that help to explain Russia’s limited success in leveraging its ambitious national nanotechnology initiative. The analysis highlights four path-dependent tendencies of Russian nanotechnology research: publication pathways and the gatekeeping role of the Russian Academy of Sciences; increasing geographical and institutional centralisation of nanotechnology research; limited institutional diffusion; and ...


Suss Microtec Ma6 Gen3 - S1805 Contrast Curve Data, Jonathan Bryan, GERALD G. LOPEZ 2016 University of Pennsylvania

Suss Microtec Ma6 Gen3 - S1805 Contrast Curve Data, Jonathan Bryan, Gerald G. Lopez

Protocols and Reports

No abstract provided.


Nitrogen-Doped Titanium Dioxide (N-Doped Tio2) For Visible Light Photocatalysis, Mohammad Khan, Sajid Ansari, Mohd Ansari, Moo Cho 2016 Universiti Brunei Darussalaam

Nitrogen-Doped Titanium Dioxide (N-Doped Tio2) For Visible Light Photocatalysis, Mohammad Khan, Sajid Ansari, Mohd Ansari, Moo Cho

Dr. Mohammad Mansoob Khan

TiO2 is an effective and well-known photocatalyst for water and air purification, but its practical applications in visible light-assisted chemical reactions are hindered mainly by its poor visible light absorption capacity. Nitrogen-doped TiO2 (N-doped TiO2) has attracted considerable attention as a photocatalyst, and rapid progress has been made in enhancing the photocatalytic efficiency of TiO2 under visible light irradiation. N-doped TiO2 exhibits broad absorption in the visible region, which can allow the utilization of a large part of the solar spectrum. This might be useful for environmental and energy applications, such as the photocatalytic degradation of organic pollutants, solar cells ...


Fabrication Of Wo3 Nanorods On Graphene Nanosheets For Improved Visible Light-Induced Photocapacitive And Photocatalytic Performance, Mohammad Khan, Mohammad Khan, Moo Cho 2016 Universiti Brunei Darussalaam

Fabrication Of Wo3 Nanorods On Graphene Nanosheets For Improved Visible Light-Induced Photocapacitive And Photocatalytic Performance, Mohammad Khan, Mohammad Khan, Moo Cho

Dr. Mohammad Mansoob Khan

Tungsten oxide (WO3) nanorods were grown on pure-graphene (P-graphene) nanosheets using a template-free and surfactant-less hydrothermal process at 200 °C. The synthesis and purity of the synthesized WO3 nanorods-graphene nanostructure was confirmed by UV-vis diffuse reflectance measurements, photoluminescence spectroscopy, X-ray diffraction, Raman spectroscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The results showed that WO3 nanorods were well distributed over the graphene nanosheets. The photocatalytic activity of the WO3 nanorods–graphene nanostructure was tested for the photocatalytic degradation of the organic model pollutant dye under visible light irradiation. The photocapacitance performance of the as-prepared nanostructure was examined by cyclic voltammetry ...


Crystallographic Processing Of Scanning Tunneling Microscopy Images Of Cobalt Phthalocyanines On Silver And Graphite, Peter Moeck, Jack Straton, M Toader, M. Hietschold 2016 Portland State University

Crystallographic Processing Of Scanning Tunneling Microscopy Images Of Cobalt Phthalocyanines On Silver And Graphite, Peter Moeck, Jack Straton, M Toader, M. Hietschold

Peter Moeck

Monolayers of cobalt phthalocyanine (CoPc) and fluorinated cobalt phthalocyanine (F16CoPc) on silver (111) and on highly (0001) oriented pyrolytic graphite (HOPG) were imaged with a scanning tunneling microscope (STM) at cryogenic temperatures (around 30 K) at Chemnitz University of Technology. Domains of regular arrays with periodicity in two dimensions (2D) and a variety of plane symmetries were observed. Crystallographic image processing (CIP) was used to quantify deviations from the plane symmetry groups and to obtain symmetrized versions of the content of the average unit cells of some of these arrays. Conclusions on the point symmetry of the CoPc and F16CoPc ...


Cds Quantum Dot-Sensitized Solar Cells Based On Nano-Branched Tio2 Arrays, Chang Liu, Yitan Li, Lin Wei, Cuncun Wu, Yanxue Chen, Liangmo Mei, Jun Jiao 2016 Shandong University

Cds Quantum Dot-Sensitized Solar Cells Based On Nano-Branched Tio2 Arrays, Chang Liu, Yitan Li, Lin Wei, Cuncun Wu, Yanxue Chen, Liangmo Mei, Jun Jiao

Jun Jiao

Nano-branched rutile TiO2 nanorod arrays were grown on F:SnO2 conductive glass (FTO) by a facile, two-step wet chemical synthesis process at low temperature. The length of the nanobranches was tailored by controlling the growth time, after which CdS quantum dots were deposited on the nano-branched TiO2 arrays using the successive ionic layer adsorption and reaction method to make a photoanode for quantum dot-sensitized solar cells (QDSCs). The photovoltaic properties of the CdS-sensitized nano-branched TiO2 solar cells were studied systematically. A short-circuit current intensity of approximately 7 mA/cm2 and a light-to-electricity conversion efficiency of 0.95% were recorded for ...


Zno Nanosheet Arrays Constructed On Weaved Titanium Wire For Cds-Sensitized Solar Cells, Cuncun Wu, Lin Wei, Yitan Li, Chang Liu, Jun Jiao, Yanxue Chen, Liangmo Mei 2016 Shandong University

Zno Nanosheet Arrays Constructed On Weaved Titanium Wire For Cds-Sensitized Solar Cells, Cuncun Wu, Lin Wei, Yitan Li, Chang Liu, Jun Jiao, Yanxue Chen, Liangmo Mei

Jun Jiao

Ordered ZnO nanosheet arrays were grown on weaved titanium wires by a low-temperature hydrothermal method. CdS nanoparticles were deposited onto the ZnO nanosheet arrays using the successive ionic layer adsorption and reaction method to make a photoanode. Nanoparticle-sensitized solar cells were assembled using these CdS/ZnO nanostructured photoanodes, and their photovoltaic performance was studied systematically. The best light-to-electricity conversion efficiency was obtained to be 2.17% under 100 mW/cm/cm2 illumination, and a remarkable shortcircuit photocurrent density of approximately 20.1 mA/cm2 was recorded, which could attribute to the relatively direct pathways for transportation of electrons ...


Dose Dependence Of Radiation Damage In Nano-Structured Amorphous Sioc/Crystalline Fe Composite, Qing Su, Lloyd Price, Lin Shao, Michael Nastasi 2016 University of Nebraska-Lincoln

Dose Dependence Of Radiation Damage In Nano-Structured Amorphous Sioc/Crystalline Fe Composite, Qing Su, Lloyd Price, Lin Shao, Michael Nastasi

Mechanical & Materials Engineering Faculty Publications

Through examination of radiation tolerance properties of amorphous silicon oxycarbide (SiOC) and crystalline Fe composite to averaged damage levels, from approximately 8 to 30 displacements per atom (dpa), we demonstrated that the Fe/SiOC interface and the Fe/amorphous FexSiyOz interface act as efficient defect sinks and promote the recombination of vacancies and interstitials. For thick Fe/SiOC multilayers, a clear Fe/SiOC interface remained and no irradiation-induced mixing was observed even after 32 dpa. For thin Fe/SiOC multilayers, an amorphous FexSiyOz intermixed layer was observed to form at ...


New Approaches To Chalcogenide Materials For Thermoelectrics: Lead Telluride-Based Nanostructures And Facile Synthesis Of Tetrahedrite And Doped Derivatives, Derak Justin James 2016 Wayne State University

New Approaches To Chalcogenide Materials For Thermoelectrics: Lead Telluride-Based Nanostructures And Facile Synthesis Of Tetrahedrite And Doped Derivatives, Derak Justin James

Wayne State University Dissertations

The overall purpose of this work is to address several of the roadblocks to use of thermoelectric materials for generation of electricity, namely inefficient processing of materials and low performance, commonly rated by the figure of merit, ZT=T2/tot. The ZT includes  as the Seebeck coefficient,  as electrical resistivity, T as the average temperature, and tot as total thermal conductivity. tot is the sum of electronic charge carrier (C) and lattice (L) contributions to thermal conductivity. Attempts to increase ZT in the literature to values >1 have focused on decreasing the thermal conductivity via nanostructuring or optimizing the ...


Turning An Organic Semiconductor Into A Low-Resistance Material By Ion Implantation, Beatrice Fraboni, Alessandra Scidà, Piero Cosseddu, Yongqiang Wang, Michael Nastasi, Silvia Milita, Annalisa Bonfiglio 2015 Università di Bologna

Turning An Organic Semiconductor Into A Low-Resistance Material By Ion Implantation, Beatrice Fraboni, Alessandra Scidà, Piero Cosseddu, Yongqiang Wang, Michael Nastasi, Silvia Milita, Annalisa Bonfiglio

NCESR Publications and Research

We report on the effects of low energy ion implantation on thin films of pentacene, carried out to investigate the efficacy of this process in the fabrication of organic electronic devices. Two different ions, Ne and N, have been implanted and compared, to assess the effects of different reactivity within the hydrocarbon matrix. Strong modification of the electrical conductivity, stable in time, is observed following ion implantation. This effect is significantly larger for N implants (up to six orders of magnitude), which are shown to introduce stable charged species within the hydrocarbon matrix, not only damage as is the case ...


Industrial-Scale Solution Blowing Of Soy Protein Nanofibers.Pdf, Mohammad Hassan 2015 Biax-Fiberfilm Corporation, Cairo University

Industrial-Scale Solution Blowing Of Soy Protein Nanofibers.Pdf, Mohammad Hassan

Mohammad Abouelreesh Hassan

Solution blowing is one of the most industrially viable processes for mass production of nanofibers without significant change of trade practices. In this work a novel industrially scalable approach to nanofiber production by solution blowing is demonstrated using Biax die. Blends of biopolymer soy protein isolate Clarisoy 100 and poly(ethylene oxide) (Mw=600 kDa) were solution blown as aqueous solutions using a spinneret with 8 rows with 41 concentric annular nozzles. Nanofiber mats were collected on a drum, and samples with an area of the order of 0.1-1 m2 were formed in about 10 s. Nanofibers were relatively ...


Doping Plasmon-Enhanced Tio2 With Zirconia To Improve Solar Energy Harvesting In Dye-Sensitized Solar Cells, Anastasia Pasche 2015 The University of Western Ontario

Doping Plasmon-Enhanced Tio2 With Zirconia To Improve Solar Energy Harvesting In Dye-Sensitized Solar Cells, Anastasia Pasche

Electronic Thesis and Dissertation Repository

Solar energy is a promising solution towards meeting the world’s ever-growing energy demand. Dye-sensitized solar cells (DSSCs) are hybrid organic-inorganic solar cells with potential for commercial application, but are plagued by inefficiency due to their poor sunlight absorption. Silver nanoparticles have been shown to enhance the absorptive properties of DSSCs, but their plasmonic resonance causes local hot spots, resulting in cell deterioration. This thesis studies the mitigation of thermal energy loss of plasmon-enhanced DSSCs by the co-incorporation of zirconia, a well-known thermostabilizer, into the cell’s photoactive material. TiO2 was also synthesized using green bio-sourced solvents in supercritical CO2 ...


Core/Shell Nanoparticles As Hybrid Platforms For The Fabrication Of A Hydrogen Peroxide Biosensor, Yu-Ho Won, Doreen Aboagye, Ho Seong Jang, Andrei Jitianu, L Stanciu 2015 Purdue University - Main Campus

Core/Shell Nanoparticles As Hybrid Platforms For The Fabrication Of A Hydrogen Peroxide Biosensor, Yu-Ho Won, Doreen Aboagye, Ho Seong Jang, Andrei Jitianu, L Stanciu

Andrei Jitianu

Core/shell nanoparticles consisting of a Fe3O4 nanoparticle core and a mesoporous silica shell (Fe3O4/m-silica) were used as a matrix for immobilization of horseradish peroxidase (HRP) enzyme and subsequent design of an amperometric hydrogen peroxide biosensor. HRP enzyme was immobilized on the core/shell nanoparticles through the electrostatic interaction between oppositely charged HRP enzyme and the silica shell at neutral pH. The enzyme-core/shell nanoparticle hybrid material was deposited on screen printed electrodes and further characterized by ultraviolet-visible (UV-vis) spectroscopy and scanning electron microscopy (SEM). This set up was used as a biosensor to detect hydrogen peroxide. The hydrogen ...


Failure Simulations At Multiple Length Scales In High Temperature Structural Alloys, Chao Pu 2015 University of Tennessee - Knoxville

Failure Simulations At Multiple Length Scales In High Temperature Structural Alloys, Chao Pu

Doctoral Dissertations

A number of computational methodologies have been developed to investigate the deformation and damage mechanism of various structural materials at different length scale and under extreme loading conditions, and also to provide insights in the development of high-performance materials.

In microscopic material behavior and failure modes, polycrystalline metals of interest include heterogeneous deformation field due to crystalline anisotropy, inter/intra grain or phase and grain boundary interactions. Crystal plasticity model is utilized to simulate microstructure based polycrystalline materials, and micro-deformation information, such as lattice strain evolution, can be captured based on crystal plasticity finite element modeling (CPFEM) in ABAQUS. The ...


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