Open Access. Powered by Scholars. Published by Universities.®
Nanoscience and Nanotechnology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Alloys (1)
- Aluminum (1)
- Aluminum—Anodic oxidation; Metals--Anodic oxidation; Nanotechnology; Thin films (1)
- Annealing of silicon films (1)
- Bimetallic (1)
-
- Catalysts (1)
- Concrete (1)
- Crystal lattices (1)
- Crystal structures (1)
- Electrical properties (1)
- Electronic structures (1)
- Low temperatures (1)
- Metal-induced crystallization (MIC) (1)
- Nano-Silica (1)
- Nanoparticles (1)
- Nanostructured materials (1)
- Palladium-copper (Pd/Cu) (1)
- Polymer electrolyte membrane fuel cells (PEMFC) (1)
- Polymer electrolyte membranes (PEM) (1)
- Raman of crystalline silicon (1)
- SCC (1)
- Self-consolidating concrete (1)
- Self-consolidating concrete – Properties (1)
- Silica (1)
- Silica Fume (1)
- Silicon thin films (1)
- Silver (1)
- Thin film systems (1)
- Transport Properties (1)
- X-Ray diffraction of crystalline silicon (1)
Articles 1 - 4 of 4
Full-Text Articles in Nanoscience and Nanotechnology
Transport Properties Of Nano-Silica Contained Self-Consolidating Concrete, Borhan Moradi
Transport Properties Of Nano-Silica Contained Self-Consolidating Concrete, Borhan Moradi
UNLV Theses, Dissertations, Professional Papers, and Capstones
In this research study, transport properties of various self-consolidating concretes (SCCs) containing nano-particles (SiO2) were investigated. Nano-silica replaced a portion of the cementitious materials at different replacement levels ranging from 1.5 to 7.5% by weight. For the purpose of this investigation, flow, bulk, and transport properties of SCCs were studied. The investigated transport properties were absorption, water penetration, rapid chloride permeability, capillary absorption, rapid migration, and chloride diffusion. Transport properties of nano-silica SCCs were also compared to those of equivalent silica fume (micro silica) contained concretes, as well as those of control mixture (concrete without nano or micro silica).
Test …
Modulated Nanopores Using Pulse Anodization On Thin Aluminum, Mahesh Babu Gunukula
Modulated Nanopores Using Pulse Anodization On Thin Aluminum, Mahesh Babu Gunukula
UNLV Theses, Dissertations, Professional Papers, and Capstones
Nanoporous anodic aluminum oxide has traditionally been made in one of two ways: "Mild Anodization (MA)" or "Hard Anodization (HA)". The former method produces self-ordered pore structures but it is slow and only works for a narrow range of processing conditions; the latter method, which is widely used in the aluminum industry, is faster but it produces films with disordered pore structures. Here we report a novel approach termed "pulse anodization" that combines the advantages of the MA and HA processes. By designing the pulse sequences it is possible to control both the composition and pore structure of the anodic …
Spectroscopic Investigation Of Palladium-Copper Bimetallic Systems For Pem Fuel Cell Catalysts, Timo Hofmann
Spectroscopic Investigation Of Palladium-Copper Bimetallic Systems For Pem Fuel Cell Catalysts, Timo Hofmann
UNLV Theses, Dissertations, Professional Papers, and Capstones
One of the main barriers to commercialization of polymer electrolyte membrane fuel cells systems is cost, which is largely due to the need of platinum (Pt)-containing catalysts. In this thesis we investigate bimetallic systems consisting of a base metal (copper) and a noble metal (palladium) that, as an alloy on the nanoscale, mimic the electronic properties that make Pt desirable as a catalyst.
We present a detailed investigation of the electronic structure of carbon-supported Pd/Cu nanoparticle catalysts, model bilayer thin film systems, alloys, and various metal reference samples. We have investigated the valence band structure of the catalysts using a …
Metal Induced Crystallization Of Silicon Thin Films, Sandeep Kumar Raju Sangaraju
Metal Induced Crystallization Of Silicon Thin Films, Sandeep Kumar Raju Sangaraju
UNLV Theses, Dissertations, Professional Papers, and Capstones
Low temperature crystallization of thin film silicon is important for many industrial applications including flat panel displays and silicon thin film solar cells. Unfortunately this remains a major challenge since crystallization temperature of silicon is above 1,000 degrees Celsius, thus limiting to substrates that can tolerate high temperatures. The inability to deposit crystalline thin films on glass substrates is the reason why flat panel display industry uses amorphous silicon for LCD active matrix displays. Thus the ability to deposit crystallized thin film silicon at low temperatures will have significant impact on thin film silicon applications. It has been observed that …