High-resolution photoacoustic imaging with focused laser and ultrasonic beams [0.03%]
聚焦激光和超声波的高分辨率光声成像
Fanting Kong,Y C Chen,Harriet O Lloyd et al.
Fanting Kong et al.
We report a photoacoustic imager that utilizes a focused laser beam in combination with a 20 MHz ultrasound focusing transducer to obtain micron-resolution tissue images over a long working distance. The imager is based on a ring transducer...
Yang Xu,N R Aluru
Yang Xu
A self-consistent tight-binding method is used to investigate the screening effects of semiconducting and metallic single-wall carbon nanotubes (SWCNTs) when the water molecules and various charged ions pass through the nanotubes. The traje...
Jae Hyun Park,N R Aluru
Jae Hyun Park
In this letter, we investigate using molecular dynamics simulations the diffusion of water submonolayers on hydrophilic surfaces. In contrast to a strong hydrophilic Ag surface, on a weak hydrophilic Pb surface, the diffusion coefficient is...
Characterization of Mn-modified Pb(Mg(13)Nb(23))O(3)-PbZrO(3)-PbTiO(3) single crystals for high power broad bandwidth transducers [0.03%]
高性能宽带换能器用Mn改性的PMN-PZT单晶压电材料的研究
Shujun Zhang,Sung-Min Lee,Dong-Ho Kim et al.
Shujun Zhang et al.
The effect of MnO(2) addition on the dielectric and piezoelectric properties of 0.4Pb(Mg(13)Nb(23))O(3)-0.25PbZrO(3)-0.35PbTiO(3) single crystals was investigated. Analogous to acceptor doping in "hard" Pb(Zr,Ti)O(3) based polycrystalline m...
Li Li,Suzette A Pabit,Jessica S Lamb et al.
Li Li et al.
Recent experiments suggest that short DNA strands associate by end-to-end stacking. Here, we report interactions between DNAs with modified ends. DNA duplexes, 20 bp long, were capped with short T(4) loops at 2, 1 or 0 ends, and were placed...
Shuo Pang,Richard E Beckham,Kenith E Meissner
Shuo Pang
We present a refractometric sensor based on quantum dot-embedded polystyrene microspheres. Optical resonances within a microsphere, known as whispering-gallery modes (WGMs), produce narrow spectral peaks. For sensing applications, spectral ...
Mitigation of thermal and fatigue behavior in K(0.5)Na(0.5)NbO(3)-based lead free piezoceramics [0.03%]
无铅压电陶瓷的热学与疲劳行为研究及改善
Shujun Zhang,Ru Xia,Hua Hao et al.
Shujun Zhang et al.
K(0.5)Na(0.5)NbO(3)-(KNN) based lead free materials have been found to exhibit good piezoelectric properties (d(33) approximately 250 pCN) due to the orthorhombic-tetragonal polymorphic phase transition (PPT) temperature compositionally shi...
Floating electrode optoelectronic tweezers: Light-driven dielectrophoretic droplet manipulation in electrically insulating oil medium [0.03%]
浮动电极光电镊：绝缘油介质中光驱动的介电泳微滴操控技术
Sungyong Park,Chenlu Pan,Ting-Hsiang Wu et al.
Sungyong Park et al.
We report an optical actuation mechanism, floating electrode optoelectronic tweezers (FEOET). FEOET enables light-driven transport of aqueous droplets immersed in electrically insulating oil on a featureless photoconductive glass layer with...
Zhen Ma,Karen J L Burg,Yanzhang Wei et al.
Zhen Ma et al.
An optical method with single-gene sensitivity for cell detection based on laser guidance was explored. Guided by the optical force from a weakly focused laser beam, a cell will move along the laser axis. Cells with different properties exp...
Low-noise wideband ultrasound detection using polymer microring resonators [0.03%]
基于聚合物微环谐振器的低噪声宽带超声探测技术研究
Sheng-Wen Huang,Sung-Liang Chen,Tao Ling et al.
Sheng-Wen Huang et al.
Polymer microring resonators for low-noise, wideband ultrasound detection are presented. Using a nanoimprinting technique, we fabricated polymer microring resonators with a quality factor of 6000 resulting in high sensitivity to ultrasound....