Open Access. Powered by Scholars. Published by Universities.®

Nanoscience and Nanotechnology Commons

Open Access. Powered by Scholars. Published by Universities.®

2324 Full-Text Articles 3815 Authors 686593 Downloads 63 Institutions

All Articles in Nanoscience and Nanotechnology

Faceted Search

2324 full-text articles. Page 1 of 84.

Effects Of Fiber Aspect Radio On Mechanical Performances Of Nano-Short-Fiber-Reinforced Rubber Composites, Zhu Dasheng 2016 School of Mechanical Engineering Nanjing Institute of Technology

Effects Of Fiber Aspect Radio On Mechanical Performances Of Nano-Short-Fiber-Reinforced Rubber Composites, Zhu Dasheng

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Influence Of Imperfections On Carbon Nanotube Properties, Marino Brcic, Marko Canadija, Josip Brnic 2016 University of Rijeka

Influence Of Imperfections On Carbon Nanotube Properties, Marino Brcic, Marko Canadija, Josip Brnic

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Mechanical Properties Of Stainless Steels With Heterogeneous Nanostructures, Hiromi Miura, Masakazu Kobayashi, Natuko Sugiura, Naoki Yoshinaga 2016 Toyohashi University of Technology

Mechanical Properties Of Stainless Steels With Heterogeneous Nanostructures, Hiromi Miura, Masakazu Kobayashi, Natuko Sugiura, Naoki Yoshinaga

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Wetting And Interfacial Microstructure Of Porous Si3n4/Si3n4 Joint After Silver Metallization, Yanli Zhuang, Tiesong Lin, Shengjin Wang, Peng He, Dusan P. Sekulic, Dechang Jia, Hongmei Wei 2016 Harbin Institute of Technology

Wetting And Interfacial Microstructure Of Porous Si3n4/Si3n4 Joint After Silver Metallization, Yanli Zhuang, Tiesong Lin, Shengjin Wang, Peng He, Dusan P. Sekulic, Dechang Jia, Hongmei Wei

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Review On Joining Of Advanced Materials And Dissimilar Materials In Harbin Institute Of Technology, Jun Qu, Yongping Lei, Peng He, Yunlong Chang 2016 Oak Ridge National Laboratory

Review On Joining Of Advanced Materials And Dissimilar Materials In Harbin Institute Of Technology, Jun Qu, Yongping Lei, Peng He, Yunlong Chang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Numerical Simulation Of Heat Transfer In Porous Metals For Cooling Applications, Edgar Avalos Gauna, Yuyuan Zhao 2016 University of Liverpool

Numerical Simulation Of Heat Transfer In Porous Metals For Cooling Applications, Edgar Avalos Gauna, Yuyuan Zhao

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Characterization Of Silicon Dioxide (Sio2) And Microchem S1800 Resist Etching Using Oxford 80 Plus Rie, Mohsen Azadi, Meredith Metzler, Gerald G. Lopez 2016 Singh Center for Nanotechnology

Characterization Of Silicon Dioxide (Sio2) And Microchem S1800 Resist Etching Using Oxford 80 Plus Rie, Mohsen Azadi, Meredith Metzler, Gerald G. Lopez

Protocols and Reports

This technical report describes the process of etching silicon dioxide (SiO2) and Microchem S1800 resist using the Oxford 80 Plus Reactive Ion Etch (RIE) system.


Characterization Of Silicon Deep Reactive Ion Etching Using The Spts Rapier, Mohsen Azadi, Meredith Metzler, Gerald G. Lopez 2016 Singh Center for Nanotechnology

Characterization Of Silicon Deep Reactive Ion Etching Using The Spts Rapier, Mohsen Azadi, Meredith Metzler, Gerald G. Lopez

Protocols and Reports

This technical report examines the silicon etch process using the SPTS Rapier Si DRIE system and highlights the difference in etch properties between small (~10 micron) and large (~500 micron) features.


Modelling And Simulation Of The Flexoelectric Effect On A Cantilevered Piezoelectric Nanoplate, Xining Wang 2016 The University of Western Ontario

Modelling And Simulation Of The Flexoelectric Effect On A Cantilevered Piezoelectric Nanoplate, Xining Wang

Electronic Thesis and Dissertation Repository

Piezoelectric nanomaterials have attracted increasing attentions due to their distinct electromechanical features, especially the size-dependent properties, which differ greatly from their bulk counterparts.

Due to the large strain gradients presented in nanostructures, the flexoelectricity is believed to be responsible for such size-dependent properties. In this thesis, based on the Kirchhoff plate model and the extended linear piezoelectric theory, a modified continuum mechanics based model is developed to study the size-dependent flexoelectric effect upon the static bending behaviors of a cantilevered piezoelectric nanoplate (PNP). Finite difference method (DFM) is employed to obtain the approximate numerical solutions.

The numerical results indicate that ...


Thermal Analysis Of Continuous And Patterned Multilayer Films In The Presence Of A Nanoscale Hot Spot, Jia-Yang Juang, Jinglin Zheng 2016 National Taiwan University

Thermal Analysis Of Continuous And Patterned Multilayer Films In The Presence Of A Nanoscale Hot Spot, Jia-Yang Juang, Jinglin Zheng

Mechanical & Materials Engineering Faculty Publications

Thermal responses of multilayer films play essential roles in state-of-the-art electronic systems, such as photo/micro-electronic devices, data storage systems, and silicon-on-insulator transistors. In this paper, we focus on the thermal aspects of multilayer films in the presence of a nanoscale hot spot induced by near field laser heating. The problem is set up in the scenario of heat assisted magnetic recording (HAMR), the next-generation technology to overcome the data storage density limit imposed by superparamagnetism. We characterized thermal responses of both continuous and patterned multilayer media films using transient thermal modeling. We observed that material configurations, in particular, the ...


Metal-Organic Hybrid Nanocomposites For Energy Harvesting Applications, Thulitha Madawa Abeywickrama 2016 Western Kentucky University

Metal-Organic Hybrid Nanocomposites For Energy Harvesting Applications, Thulitha Madawa Abeywickrama

Masters Theses & Specialist Projects

Various synthetic methods have been developed to produce metal nanostructures including copper and iron nanostructures. Modification of nanoparticle surface to enhance their characteristic properties through surface functionalization with organic ligands ranging from small molecules to polymeric materials including organic semiconducting polymers is a key interest in nanoscience. However, most of the synthetic methods developed in the past depend widely on non-aqueous solvents, toxic reducing agents, and high temperature and high-pressure conditions. Therefore, to produce metal nanostructures and their nanocomposites with a simpler and greener method is indeed necessary and desirable for their nano-scale applications. Hence the objective of this thesis ...


Case Study Of Quantifying Energy Loss Through Ceiling-Attic Recessed Lighting Fixtures Through 3d Numerical Simulation, Ri Na, Shengmao Lin, Zhigang Shen, Linxia Gu 2016 University of Nebraska - Lincoln

Case Study Of Quantifying Energy Loss Through Ceiling-Attic Recessed Lighting Fixtures Through 3d Numerical Simulation, Ri Na, Shengmao Lin, Zhigang Shen, Linxia Gu

Mechanical & Materials Engineering Faculty Publications

Abstract Air leakage through recessed lighting fixtures has been identified as a common issue that causes extra energy consumption in residential buildings. However, few quantitative studies in this area were found. As such, a preliminary assessment of the magnitude of this type of energy loss was conducted by using three-dimensional (3D) transient computational fluid dynamics (CFD) models. A hypothetical layout of recessed lighting fixtures was designed with boundary conditions of four different seasons, which were obtained from recorded roof/attic temperature data sets. The results of the study indicate that leakage of recessed lighting fixtures could be a significant channel ...


Development Of Novel Nanomaterials For Lithium Sulfur Batteries, Xia Li 2016 The University of Western

Development Of Novel Nanomaterials For Lithium Sulfur Batteries, Xia Li

Electronic Thesis and Dissertation Repository

Lithium-sulfur batteries are considered as the most promising next generation high-energy batteries. Compared with other kinds of battery, Li-S batteries have ultra-high theoretical energy density, which is a good candidate for electric vehicles and hybrid electric vehicles in future. However, there are still many challenges to be addressed in Li-S batteries. Design of electrodes, selection of electrolytes, and battery assemble have direct effects on the safety, cost and electrochemical performance of Li-S batteries. Therefore, it is greatly important to develop novel electrodes to achieve high-energy for Li-S batteries. This thesis mainly focuses on the design of sulfur cathode of Li-S ...


Hydraulic And Electrokinetic Delivery Of Remediants For In-Situ Remediation, Ahmed I. A. Chowdhury 2016 The University of Western Ontario

Hydraulic And Electrokinetic Delivery Of Remediants For In-Situ Remediation, Ahmed I. A. Chowdhury

Electronic Thesis and Dissertation Repository

Nano-scale zero valent iron (nZVI) has shown promising mobility and in-situ reactivity with chlorinated volatile organic compounds when injected into saturated porous media. The current study evaluated nZVI mobility and subsequent reactivity with in-situ contaminants in a variably saturated porous media. The nZVI particles, synthesized onsite at subzero temperatures, demonstrated complete trichloroethene (TCE) degradation within the target area. Furthermore, a three dimensional finite difference model (CompSim) was utilized to investigate nZVI mobility in variably saturated zones. Model predicted well head data were in very good agreement with field observations. Simulation results showed that the injected slurry migrated radially outward from ...


Bioink Properties Before, During And After 3d Bioprinting, Katja Hölzl, Shengmao Lin, Liesbeth Tytgat, Sandra Van Vlierberghe, Linxia Gu, Aleksandr Ovsianikov 2016 Technical University Vienna, Austria

Bioink Properties Before, During And After 3d Bioprinting, Katja Hölzl, Shengmao Lin, Liesbeth Tytgat, Sandra Van Vlierberghe, Linxia Gu, Aleksandr Ovsianikov

Mechanical & Materials Engineering Faculty Publications

Bioprinting is a process based on additive manufacturing from materials containing living cells. These materials, often referred to as bioink, are based on cytocompatible hydrogel precursor formulations, which gel in a manner compatible with different bioprinting approaches. The bioink properties before, during and after gelation are essential for its printability, comprising such features as achievable structural resolution, shape fidelity and cell survival. However, it is the final properties of the matured bioprinted tissue construct that are crucial for the end application. During tissue formation these properties are influenced by the amount of cells present in the construct, their proliferation, migration ...


Graphene Research And Enterprise: Mapping Innovation And Business Growth In A Strategic Emerging Technology, Philip Shapira, Abdullah Gok, Fatemeh Salehi 2016 University of Manchester; Georgia Institute of Technology

Graphene Research And Enterprise: Mapping Innovation And Business Growth In A Strategic Emerging Technology, Philip Shapira, Abdullah Gok, Fatemeh Salehi

Philip Shapira

This paper explores enterprise development and commercialization in the field of graphene. Firm characteristics and relationships, value chain positioning, and factors associated with product entry are examined for a set of 65 graphene-oriented small and medium-sized enterprises located in 16 different countries. As well as secondary sources and bibliometric methods to profile developments in graphene, we use computerized data mining and analytical techniques, including cluster and regression modeling, to identify patterns from publicly available online information on enterprise web sites. We identify groups of graphene small and medium-sized enterprises differentiated by how they are involved with graphene, the materials they ...


Development And Evaluation Of A Near-Infrared (1047 Nm) Photoacoustic-Nephelometer Spectrometer For Detection And Optical Characterization Of Black Carbon Aerosol, Yang Yu 2016 Washington University in St Louis

Development And Evaluation Of A Near-Infrared (1047 Nm) Photoacoustic-Nephelometer Spectrometer For Detection And Optical Characterization Of Black Carbon Aerosol, Yang Yu

Engineering and Applied Science Theses & Dissertations

Black carbon (BC) aerosol are aggregates of small carbon spherules of <10 nm to approximately 50 nm in diameter. They are characterized by their strong visible light absorption property with a mass absorption cross-section (MAC) value above 5 m2 g −1 at a wavelength λ = 550 nm, which increases inversely with wavelengths from near-infrared (≈1 µm) to ultraviolet with a power law of one. The absorbing nature of BC aerosol has been implicated in regional atmospheric warming, changing of monsoon patterns, and accelerated melting of the glaciers. The BC radiative effects over earth is currently estimated within a factor of four, resulting in one of the largest uncertainties in climate modeling. This uncertainty results from our inadequate knowledge about regional BC emission rates, and associated aerosol microphysical ...


Interplay Of Quantum Size Effect, Anisotropy And Surface Stress Shapes The Instability Of Thin Metal Films, Mikhail Khenner 2016 Western Kentucky University

Interplay Of Quantum Size Effect, Anisotropy And Surface Stress Shapes The Instability Of Thin Metal Films, Mikhail Khenner

Mikhail Khenner

Morphological instability of a planar surface ([111], [011], or [001]) of an ultra-thin metal film is studied in a parameter space formed by three major effects (the quantum size effect, the surface energy anisotropy and the surface stress) that influence a film dewetting. The analysis is based on the extended Mullins equation, where the effects are cast as functions of the film thickness. The formulation of the quantum size effect (Z. Zhang et al., PRL 80, 5381 (1998)) includes the oscillation of the surface energy with thickness caused by electrons confinement. By systematically comparing the effects, their contributions into the ...


Polymer Composites Reinforced With Multiwall Carbon Nanotubes, V. Trachevskiy, Bo Wang 2016 national aviation university

Polymer Composites Reinforced With Multiwall Carbon Nanotubes, V. Trachevskiy, Bo Wang

Kevin Lee

The structural and physico-chemical characteristics of thermoplastic polymers filled with multiwall carbon nanotubes (CNTs) such as polyethylene (PE), polyamide 6 (PA 6) and layered fiberglass with PA 6 are investigated. The influence of their concentrations and homogeneity degree of nanotubes distribution is studied. The properties of new composites are compared with the
and polypropylene (PP)–CNTs systems. It is shown that an addition of CNTs into thermoplastic polymeric materials leads to the significant changes in structural characteristics, growth of strength, electrical, thermal properties. It is coursed by the formation of CNTs continuous network in the original matrix, the crystallinity degree ...


A Review On Microbial Cells Force Spectroscopy By Using Atomic Force Microscopy, Livia Angeloni, Daniele Passeri 2016 University of Roma "La Sapienza"

A Review On Microbial Cells Force Spectroscopy By Using Atomic Force Microscopy, Livia Angeloni, Daniele Passeri

Kevin Lee

Bacterial adhesion and biofilm formation are important phenomena which can produce both detrimental and beneficial effects in several fields. Research is thus focused on the modulation of the properties of material surfaces in order to design and develop substrates able to control bacterial adhesion process, which is the first trigger event of biofilm formation. Several theoretical predictions and experimental procedures have been developed to investigate the physical, chemical and biological mechanisms regulating the attachment of bacteria to solid substrates. Nevertheless, a comprehensive understanding has not been achieved yet, limiting the capability of individuating effective technological strategies to achieve the desired ...


Digital Commons powered by bepress