Results 51 to 60 of about 1,443 (165)

Optically excited nanoscale ultrasonic transducers [PDF]

, 2015
In order to work at higher ultrasonic frequencies, for instance, to increase the resolution, it is necessary to fabricate smaller and higher frequency transducers.
Arca, Ahmet, Aylott, Jonathan W., Chen, Xuesheng, Clark, Matt, Cota, Fernando Perez, Marques, Leonel, Smith, Richard J., Somekh, Michael G., Webb, Kevin   +8 more
core   +2 more sources

Stretchable Curvature Sensors for Motion Capture with Bending‐Stretching Coupling Deformation

Advanced Science, EarlyView.
Stretchable curvature sensors based on a wavy symmetric stacked‐layer structure (WSSLS) enable decoupled bending‐stretching detection with high linearity, repeatability, and durability. Integrated into smart gloves, the sensors achieved precise motion capture and human‐robot interaction, with slip‐simulation tests demonstrating a remarkable 93.6 ...
Tairan Wang, Xinkai Xu, Shuang Li, Yuqun Lan, Kai Chen, Wei Li, Guangyuan Wang, Kuai Yu, Lijuan Sun, Yewang Su   +9 more
wiley   +1 more source

Development of a Fiber Laser with Independently Adjustable Properties for Optical Resolution Photoacoustic Microscopy [PDF]

, 2016
Photoacoustic imaging is based on the detection of generated acoustic waves through thermal expansion of tissue illuminated by short laser pulses. Fiber lasers as an excitation source for photoacoustic imaging have recently been preferred for their high ...
Aytac-Kipergil, E, Demirkiran, A, Ilday, FO, Karamuk, SG, Kayikcioglu, T, Salman, S, Uluc, N, Unlu, MB, Yavas, S   +8 more
core   +3 more sources

Interfacial Reaction Boosts Thermal Conductance of Room‐Temperature Integrated Semiconductor Interfaces Stable up to 1100 °C

Advanced Electronic Materials
Overheating has emerged as a primary challenge constraining the reliability and performance of next‐generation high‐performance (ultra)wide bandgap (WBG or UWBG) electronics.
Xiaoyang Ji, Zifeng Huang, Yutaka Ohno, Koji Inoue, Yasusyohi Nagai, Yoshiki Sakaida, Hiroki Uratani, Jinchi Sun, Naoteru Shigekawa, Jianbo Liang, Zhe Cheng   +10 more
doaj   +1 more source

Demonstration of quantum synchronization based on second-order quantum coherence of entangled photons

, 2016
Based on the second-order quantum interference between frequency entangled photons that are generated by parametric down conversion, a quantum strategic algorithm for synchronizing two spatially separated clocks has been recently presented.
Dong, Ruifang, Hou, Feiyan, Liu, Tao, Quan, Runai, Wang, Mengmeng, Wang, Shaofeng, Xiang, Xiao, Zhai, Yiwei, Zhang, Shougang   +8 more
core   +1 more source

Optimization of a perfect absorber multilayer structure by genetic algorithms [PDF]

, 2018
Background: An increasing interest has been recently grown in the development of nearly perfect absorber materials for solar energy collectors and more in general for all the thermophotovoltaic applications.
Li Voti, Roberto
core   +1 more source

Scalable, Microwave‐Enabled Synthesis of Ternary WxTi1‐xO2 and Heterostructured TiO2‐WO3‐x Colloidal Nanocrystals: Carrier Dynamics and Photocatalytic Properties

Advanced Science, EarlyView.
Two microwave‐assisted synthetic methods, specifically a one‐pot and a seeded‐growth approach, are developed within a hydroalcoholic solution for the growth of single‐phase ternary WxTi1‐xO2 and heterostructured TiO2‐WO3‐x colloidal nanocrystals. Both types of nanocrystals show significant photocatalytic activity for 4‐methoxybenzyl alcohol oxidation ...
Riccardo Scarfiello, Michele Guizzardi, Angela Fiore, Armando Genco, Concetta Nobile, Elisabetta Perrone, Sara Fernanda Orsini, Clémentine Fellah, Lucian Roiban, Marianna Bellardita, Anna Maria Venezia, Giulio Cerullo, Leonardo Palmisano, Luigi Carbone   +13 more
wiley   +1 more source

A different way of performing picosecond ultrasonic measurements in thin transparent films based on laser-wavelength effects

Applied Physics Letters, 2005
We present a way of using picosecond ultrasonics to simultaneously get the thickness and elastic properties of thin dielectric layers. This is based on the use of a blue probe which is shown to improve the detection of acousto-optic oscillations in the dielectric from which the sound velocity can be measured from the refractive index.
Devos, Arnaud, Cote, Renaud, Caruyer, Grégory, Lefevre, Arnaud   +3 more
openaire   +2 more sources

Multi‐Dimensional Acoustic Cascaded Holographic Encryption with Instantaneous Visual Decryption via Particle Manipulation

Advanced Science, EarlyView.
Acoustic holograms act as key tools for information encryption, yet current schemes limit encryption dimensionality/security and require time‐consuming decryption. A compact device integrates multi‐dimensional cascaded acoustic holography with particle manipulation, employs extra secret keys, enables rapid decryption, and is validated via 1D/2D/3D ...
Qin Lin, Feiyan Cai, Yunqing Liu, Zejiao Zhou, Jiayang Li, Rujun Zhang, Hongpeng Chen, Hairong Zheng, Huailing Zhang   +8 more
wiley   +1 more source

Defect Dynamics and Solution‐Processed Interconnects in Perovskite‐Organic Tandem Solar Cells

Advanced Science, EarlyView.
In this study, we identify the underlying cause of efficiency losses in WBG perovskites, which is ascribed to the presence of mobile defects distributed at surface regions. We further employ effective passivation agent with functional chemical groups to facilitate the healing of the mobile defects, thereby enhancing the VOC to 1.35 V and champion ...
Yingjie Hu, Qianyi Li, Kaifeng Jing, Jiangsheng Yu, Fuyi Zhou, Zhenhai Ai, You Chen, Yue Zhao, Yijia Zhang, Zhenyi Ni, Yang Bai, Gang Li, Guang Yang   +12 more
wiley   +1 more source