Gas sensing and Electrical Properties of Metal oxide Nanostructures: Nanostructures, Synthesis, sensors, sensing mechanism, LEDs, FETs, Carbon nanotubes, graphene, Supercapacitors
May 27, 2010 by AboutNanoWires.com · Leave a Comment
Product Description
In the last few years, a little word has attracted enormous attention, and investigation from all over the world. The word is ?nano?. What it presents in terms of science and technology, which are also called nanoscience and nanotechnology, is much more than just a word describing a specific length scale. It has dramatically changed every aspect of the way we think in science and technology and will certainly bring more and more surprises into our daily life as well as into the world of the future. This thesis consists of four parts of which Part-1 gives a brief overview of the synthesis, properties and applications of nanomaterials. Part-2 deals with the synthesis and characterization of different nanostructures of metal oxides and a detailed study of their gas sensing characteristics. Part-3 of the thesis contains results of studies on the electrical properties and hydrogen-sensing characteristics of field effect transistors (FETs) based on nanorods of ZnO and WO2.72. Part-4 of the thesis deals with the supercapacitive behavior of RuO2 and IrO2 functionalized mesoporous carbon and results of studies on the interaction of SWNTs with electron donor and acceptor molecules.
Mechanical Characterization of One-Dimensional Nanomaterials: Using MEMS technology and in-situ SEM/TEM experimentations
May 1, 2010 by AboutNanoWires.com · Leave a Comment
Product Description
Novel materials and nanostructures with superior electro-mechanical properties are emerging in the development of novel devices. Engineering application of these materials requires accurate electro-mechanical characterization, which in turn requires development of novel experimental techniques. This book outlines the investigation of the mechanical and electrical properties of one- dimensional nanomaterials. One-dimensional nanomaterials such as carbon nanotubes (CNTs), ZnO and GaN nanowires were investigated using MEMS technology and in situ SEM/TEM experimentation. This nanoscale materials testing system (nMTS) allows the direct correlation of stress-strain state and defect nucleation and propagation. For CNTs, the fracture strengths of arc-discharge- grown multi-walled carbon nanotubes (MWCNTs) were measured using nMTs within a TEM. Single-shell failures were observed with a mean fracture strength in excess of 100 GPa, which exceeds prior observations by more than a factor of three. Using the same experiment, the Young¿s modulus and tensile strengths of ZnO and GaN NWs were measured.
BUY FROM AMAZON–>> Mechanical Characterization of One-Dimensional Nanomaterials: Using MEMS technology and in-situ SEM/TEM experimentations
Converting Biomechanical Energy into Electricity by a Muscle-Movement-Driven Nanogenerator
March 3, 2010 by AboutNanoWires.com · Leave a Comment
A living species has numerous sources of mechanical energy, such as muscle stretching, arm/leg swings, walking/running, heart beats, and blood flow. We demonstrate a piezoelectric nanowire based nanogenerator that converts biomechanical energy, such as the movement of a human finger and the body motion of a live hamster (Campbells dwarf), into electricity. A single wire generator (SWG) consists of a flexible substrate with a zno nanowire affixed laterally at its two ends on the substrate surface. Muscle stretching results in the back and forth stretching of the substrate and the nanowire. The piezoelectric potential created inside the wire leads to the flow of electrons in the external circuit. The output voltage has been increased by integrating multiple swgs. A series connection of four swgs produced an output voltage of up to 0.1?0.15 V. ? ?????? ?????? ??????????? ????? ??? ?????????? ?????????????????? ?????? – ????????? ???????? ??????????? ? ????????? ?????????? ??? ????????????? ????????????? ?????????? ? ???. ?????? ????????? ????? ?? ?????? ????? ????????? 100-800 ?????????? ? ?????? 100-500 ?????? ? ?????? ?????????? ??????. ????? ?????????????? ? ???? ????????? ?????????. ? ?????? ????? ?????? ????????? ???????? ?????????? ?? ??????????? ????????? ??? ???????. ?? ????? ???? ? ?????? ?????????? ???? ???????? ????????? ? ?????????? ?????????? ???????? ?, ?????????????, ??????????? ? ??????? ?????? ??????. ? ?????????? ?????? ??????????????????? ??????? ?? ????????? ???????? ????????? ?????????? ???????? ???????????.
Room Temperature H2 response of ZnO Nanowire
March 3, 2010 by AboutNanoWires.com · 1 Comment
The attached video will show the dynamic response behavior of zno Nanowire sensor to 100 ppm H2 gas




