Results 101 to 110 of about 93,717 (313)

Keeping development on time: Insights into post‐transcriptional mechanisms driving oscillatory gene expression during vertebrate segmentation

WIREs RNA, Volume 14, Issue 1, January/February 2023., 2023
Genetic oscillators play crucial roles in development. The hairy/Enhancer of split gene family (Hes/her) undergo cell‐autonomous genetic oscillations to regulate the timing of vertebrate segmentation and neural cell proliferation and differentiation. mRNA stability and translation are tightly regulated to maintain oscillatory expression.
Monica C. Blatnik, Thomas L. Gallagher, Sharon L. Amacher   +2 more
wiley   +1 more source

Wavefront measurement method based on improved light field camera

Results in Physics, 2020
The light field camera is used in the wavefront sensing field because of its simple structure, large field of view, high utilization rate of light energy, etc.
Xin Chen, Wenke Xie, Haotong Ma, Junqiu Chu, Bo Qi, Ge Ren, Xuecheng Sun, Fanglin Chen   +7 more
doaj  

Wavefront-sensing-based autofocusing in microscopy [PDF]

Journal of Biomedical Optics, 2017
Massive image acquisition is required along the optical axis in the classical image-analysis-based autofocus method, which significantly decreases autofocus efficiency. A wavefront-sensing-based autofocus technique is proposed to increase the speed of autofocusing and obtain high localization accuracy.
Xiaolin Tian, Liang Xue, Shumei Gao, Yan Kong, Xin Meng, Jing Xu, Haoyang Cui, Cheng Liu, Shouyu Wang, Shouyu Wang, Fei Liu   +10 more
openaire   +2 more sources

The Deformable Mirror Demonstration Mission (DeMi) CubeSat: optomechanical design validation and laboratory calibration

, 2018
Coronagraphs on future space telescopes will require precise wavefront correction to detect Earth-like exoplanets near their host stars. High-actuator count microelectromechanical system (MEMS) deformable mirrors provide wavefront control with low size ...
Allan, Gregory, Barnes, Derek, Cahoy, Kerri L., Douglas, Ewan S., Egan, Mark, Furesz, Gabor, Grunwald, Warren, Gubner, Jennifer, Haughwout, Christian, Holden, Bobby G., Pereira, Paula do Vale, Stein, Abigail J.   +11 more
core   +1 more source

Exciton‐Photon Coupling Microcavity as a Selective Biosensing Platform for Nonlocal Terahertz Metamaterials

Advanced Science, EarlyView.
The nonlocal metamaterial, characterized by strong light‐matter coupling, can be integrated with functionalized colloidal gold and monoclonal tag antibodies to enable rapid multidimensional detection and identification of total prostate‐specific antigen in complex environmental solutions.
Guifang Wu, Fengping Yan, Lanju Liang, Xuemei Du, Wei Wang, Ting Li, Junping Tian, Xin Yan, Haiyun Yao, Ziqun Wang, Meng Wang   +10 more
wiley   +1 more source

Optimization scheme of partial discharge location of external insulation based on 2‐D multiple signal classification algorithm

IET Science, Measurement &Technology, Volume 17, Issue 1, Page 11-26, January 2023., 2023
Abstract Partial discharge (PD) localization is critical to ensure the safe operation of power equipment. In this paper, an optimization scheme is developed for PD positioning of external insulation equipment. The optimization scheme is based on an eight‐element cross sensor array to receive the ultrasonic signal generated by the PD, and uses the ...
Shaotong Pei, Dewang Liu, Zijian Ye, Jiajun Yang, Yunpeng Liu   +4 more
wiley   +1 more source

An Optical Wavefront Sensor Based on a Double Layer Microlens Array

Sensors, 2011
In order to determine light aberrations, Shack-Hartmann optical wavefront sensors make use of microlens arrays (MLA) to divide the incident light into small parts and focus them onto image planes.
Hsiang-Chun Wei, Guo-Dung John Su, Hsin-Ta Hsieh, Vinna Lin   +3 more
doaj   +1 more source

Wavefront sensing based on the inverted Hartmann sensor [PDF]

arXiv, 2019
The classic Hartmann test consists of an array of holes to reconstruct the wavefront from the local deviation of each focal spot, and Shack-Hartmann sensor improved that with an array of microlenses. This array of microlenses imposes practical limitations when the wavefront is not into of visible wavelengths, e.g., the fabrication of these. Instead, we
arxiv  

Pupil‐Adaptive Retina Projection Augment Reality Displays With Switchable Ultra‐Dense Viewpoints

Advanced Science, EarlyView.
This paper presents a seamless retina projection AR display with 49 switchable ultra‐dense viewpoints, achieving a record high rotation precision of 1.28°/viewpoint. With a light selector, only a singular image can be consistently perceived by eye‐tracking without image missing or overlapping regardless of dynamic pupil under different ambient lights ...
Haonan Jiang, Yuechu Cheng, Zhibo Sun, Zhengnan Yuan, Huajian Jin, Yipeng Huo, Man‐Chun Tseng, Fion Yeung, Hoi‐Sing Kwok, Enguo Chen   +9 more
wiley   +1 more source

In situ chamber for studying battery failure using high‐speed synchrotron radiography

Journal of Synchrotron Radiation, Volume 30, Issue 1, Page 192-199, January 2023., 2023
The developed test chamber, capable of high‐speed X‐ray imaging, was designed to perform robust in situ abuse tests on batteries in various configurations while providing a complete overview of the failure event with additional complementary measurement methods.The investigation of lithium‐ion battery failures is a major challenge for personnel and ...
Jonas Pfaff, Matilda Fransson, Ludovic Broche, Mark Buckwell, Donal P. Finegan, Stefan Moser, Sebastian Schopferer, Siegfried Nau, Paul R. Shearing, Alexander Rack   +9 more
wiley   +1 more source