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This paper reports an abnormal diode characteristic of electrolyte-oxide-semiconductor (EOS) structure. The EOS structure is made up of an n-type silicon layer, a low-pressure-chemical-vapor-deposition SiO2 layer and an electrolyte-solution layer, from bottom to top. It shows a stable one-way electrical conductivity when external voltages are applied between the electrolyte-solution and silicon layers...
This paper reports a novel highly-ordered tripetaloid arrayed structure (TPAS) which performs very well as an active surface-enhanced Raman scattering (SERS) substrate for its notable reproducibility and enormous SERS enhancement factor (EF). The TPAS is easily fabricated by anisotropic etching of a self-assembly silica-nanoparticle bilayer and a following metal deposition. Electromagnetic simulation...
We report a microfluidic surface-enhanced Raman scattering (SERS) sensor for online monitoring the mixing and reaction between chemicals of low concentration. The SERS sensor is made up of a SERS-active substrate and a polydimethylsiloxane cap with microchannels for delivering solutions. The SERS substrate consists of noble-metal covered silicon nanopillar-forest patterns, which are fabricated based...
A plaster antenna for 2.45 GHz applications is presented. Measurement results for different use cases are given, and bending effects are examined. The proposed structure exhibits a 6 dBi on-body gain, and covers the 2.4-2.5 GHz ISM band in all use cases. The effect of bending the antenna on the SAR has been investigated by simulations. The antenna is suitable for medical applications.
Using SiO2 masks with different stripe width, the luminescence wavelength of InAs/InP quantum dots has been tuned in a range as wide as 100 meV on a single wafer by selective area growth.
We report for the first time a facile lithography-free approach for fabricating nanopillars over large areas or in patterns. The key technique of this approach is that randomly-distributed nanoscale SiO2 patterns can be synthesized on substrates simply by removing photoresist with oxygen plasma bombardment. Those SiO2 nanopatterns may further function as masks in the following etching process for...
Commercial plaster material (polyacrylate) is used as an antenna substrate. Two 2.45 GHz patch antennas are introduced, both designed to be attached directly to the skin. Measured efficiencies are 70 % in free space and 60 % on-body. Measured on-body gains of each antenna are 6.2 and 1.4 dBi. Simulated 1 g specific absorption rates (SAR) of the two antennas are 2.3 W/kg and 1.6 W/kg using 1 W input...
A continuously alternating deposition method capable of producing compact collateral nanowires of single crystalline silicon on a wafer scale is described. By depositing different materials (polysilicon or silicon oxide) which have different etching properties over lithographically defined sidewalls and by selectively removing the sacrificial material, those sidewalls are preserved and can serve as...
It was essential for color reproduction to achieve the goal of "WYSIWYG" since the electronic pre-prepress technologies were adopted three decades ago. Gamut mapping technologies were often used as one of the primary control parameters for color reproduction. However, those technologies were widely used in the paper based printing, not in textile printing. In this study, three gamut-mapping...
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