Mechanism of flexural resonance frequency shift of a piezoelectric microcantilever sensor during humidity detection [0.03%]
基于弯曲谐振频率偏移的压电微力臂湿度传感机理研究
Qing Zhu,Wan Y Shih,Wei-Heng Shih
Qing Zhu
We have examined the flexural resonance frequency shift of a piezoelectric microcantilever sensor (PEMS) during humidity detection and have shown that the flexural resonance frequency shift of the PEMS during detection was a result of Young...
Yiqiong Zhao,Graham Milne,J Scott Edgar et al.
Yiqiong Zhao et al.
This paper describes the quantitative force mapping of micron-sized particles held in an optical vortex trap. We present a simple and efficient model, which accounts for the diffraction of the strongly localized optical field of the tightly...
Novel morphologies and non-linear scaling of laser damage in glass by tightly-focused femtosecond pulses [0.03%]
飞秒激光聚焦诱导玻璃损伤的新形态及非线性刻划效应研究
Jeffrey F Herbstman,Alan J Hunt,Steven M Yalisove
Jeffrey F Herbstman
We examine the relationship between pulse energy and the morphology of damage in glass, produced by a tightly-focused femtosecond pulsed laser. For fluences up to three times that of threshold, an unexpected discontinuity in the scaling of ...
Magnetoacoustic tomographic imaging of electrical impedance with magnetic induction [0.03%]
磁感应电动阻抗的磁声层析成像技术
Rongmin Xia,Xu Li,Bin He
Rongmin Xia
Magnetoacoustic tomography with magnetic induction (MAT-MI) is a recently introduced method for imaging tissue electrical impedance properties by integrating magnetic induction and ultrasound measurements. In the present study, we have deve...
A grating-assisted resonant-cavity-enhanced optical displacement detection method for micromachined sensors [0.03%]
一种光栅辅助的用于微机械传感器的共振腔增强位移检测方法
Wook Lee,Neal A Hall,F Levent Degertekin
Wook Lee
We present an integrated optical displacement sensing method for microscale sensors which is based on an asymmetric Fabry-Perot etalon structure with an embedded phase-sensitive diffraction grating. Analytical modeling of the structure show...
Pulsed ultrasound-modulated optical tomography using spectral-hole burning as a narrowband spectral filter [0.03%]
基于光谱空穴烧孔的窄带光谱滤波器的脉冲超声调制光学层析成像技术
Youzhi Li,Huiliang Zhang,Chulhong Kim et al.
Youzhi Li et al.
We applied a submegahertz nonlinear optical filter afforded by a cryogenically cooled spectral-hole burning crystal to ultrasound-modulated optical tomography. Our experimental results show that this technique, having the largest etendue am...
Jianping Fu,Pan Mao,Jongyoon Han
Jianping Fu
We report here a microfabricated nanofilter array chip that can size-fractionate SDS-protein complexes and small DNA molecules based on the Ogston sieving mechanism. Nanofilter arrays with a gap size of 40-180nm were fabricated and characte...
High-numerical-aperture-based virtual point detectors for photoacoustic tomography [0.03%]
基于高数值孔径的虚拟点检测器的光声层析成像技术
Changhui Li,Lihong V Wang
Changhui Li
The focal point of a high-numerical-aperture (NA) ultrasonic transducer can be used as a virtual point detector. This virtual point detector detects omnidirectionally over a wide acceptance angle. It also combines a large active transducer ...
Yongxia Zhang,Kadir Aslan,Michael J R Previte et al.
Yongxia Zhang et al.
In this letter, we report metal-enhanced e-type fluorescence. Eosin in close proximity to silver island films (SiFs) shows enhanced e-type fluorescence with an approximately two-fold higher intensity observed from SiFs, as compared to a con...
Electrical characterization of protein molecules by a solid-state nanopore [0.03%]
固态纳米孔的蛋白质分子电学特性分析
Daniel Fologea,Bradley Ledden,David S McNabb et al.
Daniel Fologea et al.
The authors measured ionic current blockages caused by protein translocation through voltage-biased silicon nitride nanopores in ionic solution. By calculating the mean amplitude, time duration, and the integral of current blockages, they e...