Papers – Page 254 – TechConnect Briefs

Three dimensional metal film catalyst assisted etching of silicon

Sheng W., Shi T., Sun B., Tan X., Jiang T., Liao G., Huazhong University of Science and Technology, CN

Recently metal assisted chemical etching of silicon has emerged as a promising low-cost technology for the fabrication of vertical aligned silicon nanowire arrays[1].The technology comprises two steps: depositing a layer of 2-D porous siliver film [...]

Single resonator GaN/Si SAW based temperature sensor

Muller A., Konstantinidis G., Dinescu A., Stefanescu A., Cismaru A., Buiculescu V., Giangu I., Stavrinidis A., Stavrinidis G., Stavrinidis A., Stavrinidis G., IMT-Bucharest, RO

The use of GaN based SAW type sensors has a major advantage for temperature measurements in GaN MMICs because of the possibility of monolithic integration of the temperature sensor and the possibility to place the [...]

The role of target warming in the synthesis of silicon nanoparticles by picosecond laser ablation in liquid

Popovic D.M., Zekic A.A., Trtica M., Stasic J., University of Belgrade-Faculty of Physics, RS

In our previous work, we investigated the LAL process of producing Si NPs with pulsed infrared transverse excited atmospheric (TEA) CO2 laser and we analyzed the role of thermal effects on the NP’s size distribution. [...]

3D Printing of Double Ka Band Helical Antenna

Lanouette A.-M., Hill J., Dussault P.D., Laurin J.-J., Therriault D., École Polytechnique de Montréal, CA

We present a rapid and low-cost fabrication technique to build a small array of antennas operating in the Ka band (20-30GHz). The designed antenna prototypes have a wire diameter of 0.2mm, a helix diameter of [...]

Fast, robust and simple all optical far-field nano-positioning measurements

Juan M.L., Tischler N., Fernandez-Corbaton I., Zambrana-Puyalto X., Vidal X., Molina-Terriza G., QISS, AU

We present a novel method for the nano-positioning measurement of a sample relying on symmetry considerations. In particular, we exploit the cylindrical symmetry of a control defect appended to the sample. The exact nature of [...]

Nanomanipulators with reduced hysteresis and interferometers build in NanoFabs

Luskinovich P.N., Zhabotinskiy V.A., NANOMETER Standard GmbH, DE

The use of nanomanipulators made on the base of monocrystals characterized inverse piezoelectric effect and many times, in comparison with piezoceramic, less hysteresis and creep, allows to achieve the following results: - Shorten the time [...]

Engineered Nanofluids for Heat Transfer and Novel Applications

Timofeeva E.V., Singh D., Yu W., France D., Argonne National Laboratory, US

Nanofluids are the new expanding area in nanotechnology, with applications as wide as biomedical, lubrication, thermal management, energy generation, energy conversion, and energy storage. Variety and unique characteristics of nanomaterials allow for engineering the multifunctional [...]

Nanofluidics: Wetting and Spreading Phenomena and Applications

Wasan D., Nikolov A., Illinois Institute of Technology, US

Suspensions of nanometer-sized particles in liquids (nanofluids) are used in a variety of technological applications and biological systems. For example, their spreading and adhesion behavior on solid surfaces can yield materials with desirable structural and [...]

Possible explanations of the deviations in the thermal conductivity measurements

Han K., Lee M., Koo J., Kedzierski M.A., Kyung Hee University, KR

Nanofluids were invented to enhance thermal conductivity of the working fluid near the wall region, where the conduction is the only mechanism to dissipate heat and it limits the heat transfer rate from a body [...]

Alignment of Different Functional Single Wall Carbon Nanotubes using Fe2O3 Nanoparticles under External Magnetic Field

Younes H., Hong H., South Dakota School of Mines and Technology, US

In this work we describe a new approach to align functionalized single walled carbon nanotubes (SWNTs) by γ-Fe2O3 in the presence of an external magnetic field without using chemical surfactant. Five different functionalized SWNTs are [...]