Results 171 to 180 of about 17,710,470 (300)

Damage‐Free Full‐Thickness Dicing of Ultra‐Thin GaAs Wafers Using a Femtosecond Laser with Low Residual Stress

Advanced Science, Volume 13, Issue 7, 3 February 2026.
This study presents a femtosecond laser‐based ultrashort pulse dicing system that uses a non‐diffracting Bessel beam to shape the femtosecond laser. The use of femtosecond Bessel beam shaping and high‐speed scanning enables rapid material removal that outpaces thermal diffusion, thereby suppressing melting, minimizing the HAZ, and reducing sidewall ...
Shunshuo Cai, Yankang Ding, Minxia Ding, Qi Song, Zhe Zhang, Siwei Zhang, Kunpeng Zhang, Yu Hou, Song Yue, Haiyan Shi, Man Li, Wenrui Duan, Zichen Zhang   +12 more
wiley   +1 more source

A Bidirectional Design Method for Through-Glass Vias with Selective Laser Wet Etching Based on the Cross-Modal Learning Method. [PDF]

Micromachines (Basel)
Meng Y, Wu L, Yuan B, Zhou X, Li Y, Zhang Z, Shi Y.   +6 more
europepmc   +1 more source

Evolution of C-point singularity and polarization coverage of Poincare-Bessel beam in self-healing process [PDF]

Subith Kumar, Anupam Pal, Arash Shiri, G. K. Samanta, Greg Gbur   +4 more
openalex   +1 more source

Modeling stratified dispersal in forest pests: A case study of the mountain pine beetle in Alberta

Ecology, Volume 107, Issue 2, February 2026.
Abstract Forest pests pose critical threats to forest ecosystems worldwide, yet accurately predicting their spatial spread remains challenging due to complex dispersal behaviors, weather effects, and the inherent difficulty of tracking small organisms across large landscapes.
Evan C. Johnson, Micah Brush, Mark A. Lewis   +2 more
wiley   +1 more source

Bivariate Copula‐Based Regression for Joint Modeling of Healthcare Visits

Health Economics, Volume 35, Issue 2, Page 332-345, February 2026.
ABSTRACT Doctor and non‐doctor visit frequencies are key indicators of healthcare access, utilization and individual health‐seeking behavior. While doctor visits reflect engagement with formal medical services, non‐doctor visits, such as to nurses, physiotherapists or alternative providers, offer insights into patient preferences and system ...
Giampiero Marra, Rosalba Radice
wiley   +1 more source

Doppler effect tailoring: extra-red shift of structured light. [PDF]

Nat Commun
Wan Z, Tang Z, Wang J.
europepmc   +1 more source

Spectral Parameter Power Series Representation for Regular Solutions of the Radial Dirac System

Mathematical Methods in the Applied Sciences, Volume 49, Issue 3, Page 2098-2113, February 2026.
ABSTRACT A spectral parameter power series (SPPS) representation for the regular solution of the radial Dirac system with complex coefficients is obtained, as well as a SPPS representation for the (entire) characteristic function of the corresponding spectral problem on a finite interval. Based on the SPPS representation, a numerical method for solving
Emmanuel Roque, Sergii M. Torba
wiley   +1 more source

Compact way to generate guide star for wavefront sensing in Bessel two-photon microscopy. [PDF]

Sci Rep
Luo F, Li N, Yang C, Peng Z, Mu Q, Zhang X.   +5 more
europepmc   +1 more source

The Generation and Control of Irregularly Shaped Perfect Vector Vortex Beams on Hybrid Poincaré Spheres Using All‐Dielectric Metasurfaces

Nanophotonics, Volume 15, Issue 3, 12 February 2026.
Based on an all‐dielectric metasurface with cross‐phase modulation, we achieve the generation and polarization control of integers and fractional order irregular perfect vector vortex beams on the hybrid Poincaré sphere, opening a new avenue for optical field manipulation.
Xiaojie Sun, Xuan Yang, Haixu Tao, Haiyang Song, Jingpei Cai, Jiaxuan Zou, Jiajing He, Jun Wang   +7 more
wiley   +1 more source

Rapid Fabrication of Large-Area Anti-Reflective Microholes Using MHz Burst Mode Femtosecond Laser Bessel Beams. [PDF]

Nanomaterials (Basel)
Ding Y, Wang C, Gao Z, Jiang X, Wang S, Jia X, Liu L, Duan J.   +7 more
europepmc   +1 more source