Results 71 to 80 of about 5,580 (232)

Simulation of Laser Propagation in a Plasma with a Frequency Wave Equation [PDF]

, 2007
The aim of this work is to perform numerical simulations of the propagation of a laser in a plasma. At each time step, one has to solve a Helmholtz equation in a domain which consists in some hundreds of millions of cells.
Ballereau, Benamou, Berenger, Dhillon, Dorr, Doumic, Erlangga, F. Nataf, Greenbaum, Heller, Horn, Hüller, Jourdren, Merle, Meurant, Parlett, Plessix, R. Sentis, Rossi, Rutishauser, S. Desroziers, Saad, Sentis, Sentis, Sulem   +24 more
core   +4 more sources

Micro Biomimetic Eyeball for Humanoid Robots: A Visual System with High‐Density Functional Integration Based on an Origami Mechanism

Advanced Science, Volume 13, Issue 1, 5 January 2026.
A biomimetic eyeball system (BES) based on a 3‐DOF miniature origami mechanism, which addresses the inherent issues of large size and weight in traditional electromechanical BESs is presented. Moreover, it maintains a level of visual functionality comparable to that of the human eye, including capabilities such as rapid scanning, target recognition ...
Junji Pu, Yang Chen, Yulie Wu, Canhui Yin, Chunyan Qu, Dingbang Xiao, Xuezhong Wu   +6 more
wiley   +1 more source

Design and Experimental Validation of an Optical Autofocusing System with Improved Accuracy

Photonics, 2023
This study proposes a modified optical design to improve the issue of autofocus accuracy in existing optical systems. The proposed system uses lens offset to convert incident light into non-parallel light, achieving a focus shift and avoiding severe ...
Jui-Hsiang Hung, Ho-Da Tu, Wen-Huai Hsu, Chien-Sheng Liu   +3 more
doaj   +1 more source

High speed optical coherence microscopy with autofocus adjustment and a miniaturized endoscopic imaging probe [PDF]

, 2010
Optical coherence microscopy (OCM) is a promising technique for high resolution cellular imaging in human tissues. An OCM system for high-speed en face cellular resolution imaging was developed at 1060 nm wavelength at frame rates up to 5 Hz with ...
Aaron D. Aguirre, Aguirre, Aguirre, Boppart, Boudoux, Bourquin, Chao Zhou, Chen, Chen, Clark, de Boer, Dickensheets, Dubois, Fortier, Geusebroek, Helmchen, Hitzenberger, Hoeling, Huang, Huang, Huber, Izatt, Izatt, Jain, James G. Fujimoto, Juergen Sawinski, Jung, Kempe, Kiesslich, Kim, Lexer, Liu, Maitland, Miyajima, Muldoon, Myaing, Pan, Piyawattanametha, Polglase, Qi, Rajadhyaksha, Rouse, Sawinski, Schmitt, Shu-Wei Huang, Tearney, Wang, Westphal, Willner, Winfried Denk, Xie, Xie, Xie, Xu, Zara, Zhao, Zhu, Zvyagin   +57 more
core   +1 more source

Interactions Enhance Ramp Reversal Memory in Locally Phase Separated Materials

Advanced Electronic Materials, Volume 11, Issue 21, December 17, 2025.
Ramp‐reversal memory (RRM) can be encoded in metal–insulator transition materials by repeatedly driving them partway through the transition. We develop an interacting model with quenched disorder and defect motion that reproduces experimental hysteresis and memory peaking at the inflection point, and predicts enhancement of memory with interactions. We
Y. Sun, M. Alzate Banguero, P. Salev, Ivan K. Schuller, L. Aigouy, A. Zimmers, E. W. Carlson   +6 more
wiley   +1 more source

Laser autofocusing: A sliding mode approach

IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society, 2010
Quality of the laser processing depends on many factors, such as overall configuration of the laser workstation, control methods used and quality of the laser beam. Although lasers used in material processing are typically high energy lasers, light beam still needs to be focused in order to achieve higher energy density and smaller final spot size ...
Golubovic, Edin, Khalil, Islam S. M., Kamadan, Abdullah, Şabanoviç, Asif   +3 more
openaire   +2 more sources

Microfluidic‐ and Field‐Assisted 3D Printing: Leveraging Fluidic Control, Electrokinetic Phenomena, and Other Physical Fields to Advance Additive Manufacturing

ELECTROPHORESIS, Volume 46, Issue 24, Page 1692-1707, December 2025.
ABSTRACT Three‐dimensional (3D) printing has revolutionized manufacturing by enabling the rapid fabrication of complex structures, yet conventional 3D techniques remain constrained by inherent limitations in resolution, speed, and multi‐material integration.
Guillermo Ramirez‐Alvarado, Gongchen Sun   +1 more
wiley   +1 more source

The Application of Artificial Intelligence‐Based Bone Marrow Cell Analysis System in Pediatric Hematological Diseases

International Journal of Laboratory Hematology, Volume 47, Issue 6, Page 1025-1034, December 2025.
ABSTRACT Introduction The clinical diagnosis of hematological diseases depends on the differential count of nucleated cells on the bone marrow (BM) smears, and an artificial intelligence (AI)‐based system was applied to automatically classify BM nucleated cells in pediatric hematological disease samples in this study.
Xin He, Fei He, Yan Wang, Yu Liu, Xiaopeng Gao, Mingrui Yu, Haiyan Gao   +6 more
wiley   +1 more source

Logarithmic Laplacian Prior Based Bayesian Inverse Synthetic Aperture Radar Imaging

Sensors, 2016
This paper presents a novel Inverse Synthetic Aperture Radar Imaging (ISAR) algorithm based on a new sparse prior, known as the logarithmic Laplacian prior.
Shuanghui Zhang, Yongxiang Liu, Xiang Li, Guoan Bi   +3 more
doaj   +1 more source

Controlling the Abrupt Autofocusing of Circular Airy Vortex Beam via Uniaxial Crystal

Photonics, 2022
The propagation of many kinds of structured light beams in uniaxial crystal has been investigated. However, the investigation of the evolution of these structured light beams after the uniaxial crystal is lacking. In this paper, an evolution formula of a
Houquan Liu, Jiawen Zhang, Huilin Pu, Jiankang Xu, Ronghui Xu, Libo Yuan   +5 more
doaj   +1 more source