نتایج جستجو برای: nanolayer

تعداد نتایج: 299  

Journal: :Applied Physics Letters 2023

We present an approach to selectively examine asymmetric potential in the buried layer of solar cell devices by means nonlinear x-ray spectroscopy. Detecting second harmonic generation signals while resonant SiO2 core level, we directly observe existence band bending effect nanolayer, heterostructures Al/LiF/SiO2/Si, TiO2/SiO2/Si, and Al2O3/SiO2/Si. The results demonstrate high sensitivity meth...

2011
Steve Choi

As a hot research topic nanofluids have attracted great interest from researchers worldwide. Although nanofluids are found to exhibit higher thermal conductivity compared to their base fluids, the underlying mechanisms for the enhancement are still debated and not fully understood. In addition, there has been little agreement among different studies and no widely accepted model is also availabl...

2008
B. BARNA

Nanocomposite thin film coatings of MoS2-added CrN/TiAlN tribological multilayers were prepared by reactive co-sputtering of Ti/Al 50/50 at.%, pure chromium and MoS2 targets of the independently d.c. driven unbalanced magnetrons. Nano-scaled tri-layer system with periodic thickness in a range of 4-10 nm of CrN, TiAlN and MoS2 compound layer with a broad interface, in which the composition is co...

2017
Hyun-U Ko Hyun Chan Kim Jung Woong Kim Lindong Zhai Jaehwan Kim

Recently, a cellulose-based composite material with a thin ZnO nanolayer-namely, ZnO nanocoated cellulose film (ZONCE)-was fabricated to increase its piezoelectric charge constant. However, the fabrication method has limitations to its application in mass production. In this paper, a hydrothermal synthesis method suitable for the mass production of ZONCE (HZONCE) is proposed. A simple hydrother...

2013
Yong Seok Hwang Valery I. Levitas

Two melting mechanisms are reproduced and quantified for superheating and melting of Al nanolayer irradiated by picoand femtosecond laser using the advanced phase-field approach coupled with mechanics and a two-temperature model. At heating rates Q 79:04 K/ps induced by picosecond laser, two-sided barrierless surface melting forms two solid-melt interfaces, which meet near the center of a sampl...

Journal: :Journal of colloid and interface science 2011
Jung-Sun Lim Seung-Min Kim Sang-Yup Lee Eric A Stach James N Culver Michael T Harris

Biological templates such as virions or protein assemblies have several surface functional groups that can complicate the elucidation of the fundamental mechanism(s) governing the sorption and mineralization of metals on the surface of the template. Surface functionalized silica nanoclusters with hydroxyl, amine, or thiol groups serve as surrogates for understanding the interaction between indi...

Journal: :Applied spectroscopy 2015
Xueli Tian Hong Guo Ketan H Bhatt Song Q Zhao Yi Wang Junpeng Guo

We experimentally demonstrate a surface plasmon resonance spectrometer sensor by using an e-beam-patterned super-period gold nanodisc grating on a glass substrate. The super-period gold nanodisc grating has a small subwavelength period and a large diffraction grating period. The small subwavelength period enhances localized surface plasmon resonance, and the large diffraction grating period dif...

2015
Marco Morra Gianluca Giavaresi Maria Sartori Andrea Ferrari Annapaola Parrilli Daniele Bollati Ruggero Rodriguez Y. Baena Clara Cassinelli Milena Fini

The paper presents results of physico-chemical and biological investigations of a surface-engineered synthetic bone filler. Surface analysis confirms that the ceramic phosphate granules present a collagen nanolayer to the surrounding environment. Cell cultures tests show that, in agreement with literature reports, surface-immobilized collagen molecular cues can stimulate progression along the o...

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