Results 131 to 140 of about 2,534,041 (331)

Controlled Mechanical Motions of Microparticles in Optical Tweezers

Micromachines, 2018
Optical tweezers, formed by a highly focused laser beam, have intriguing applications in biology and physics. Inspired by molecular rotors, numerous optical beams and artificial particles have been proposed to build optical tweezers trapping ...
Jing Liu, Zhi-yuan Li
semanticscholar   +1 more source

Sorting Out Bacterial Viability with Optical Tweezers [PDF]

, 2000
Morgan Ericsson, Dag Hanstorp, P. Hagberg, Jonas Enger, Thomas Nyström   +4 more
openalex   +1 more source

Comparing Femtosecond Optical Tweezers with Conventional CW Optical Tweezers

In this work, we present a comparative study between continuous-wave (CW) and pulsed optical tweezers for 250 nm, 500 nm and 1-micron radius polystyrene beads at 5 different laser powers. We have used a Ti:Sapphire (MIRA 900F) laser that can be easily switched from CW to pulsed mode of operation, so there is no change in the experimental conditions in ...
Singh, Ajitesh, Singh, Krishna Kant, Kumar, Deepak, Goswami, Debabrata   +3 more
openaire   +2 more sources

Scanning holographic optical tweezers

Optics Letters, 2017
The aim of this Letter is to introduce a new optical tweezers approach, called scanning holographic optical tweezers (SHOT), which drastically increases the working area (WA) of the holographic-optical tweezers (HOT) approach, while maintaining tightly focused laser traps. A 12-fold increase in the WA is demonstrated.
Lucas A. Shaw, Christopher M. Spadaccini, Jonathan B. Hopkins, Robert M. Panas   +3 more
openaire   +3 more sources

Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Microfabrication using nano‐ to micron‐sized blocks has transformative potential for next‐gen electronics, optoelectronics, and materials. Traditional methods are limited by scalability and precision. STIC, a single‐laser system for precise colloid manipulation and immobilization using femtosecond lasers, is introduced that enables efficient 3D ...
Krishangi Krishna, Jieliyue Sun, Wenyu Liu, Robert H. Hurt, Kimani C. Toussaint Jr.   +4 more
wiley   +1 more source

Multimodal Actuation and Environment Adaptive Strategies of Bio‐Inspired Micro/Nanorobots in Precision Medicine

Advanced Robotics Research, EarlyView.
An introduction for multidrive and environment‐adaptive micro/nanorobotics: design and fabrication strategies, intelligent actuation, and their applications. Various intelligent actuation approaches—magnetic, acoustic, optical, chemical, and biological—can be synergistically designed to enhance flexibility and adaptive behavior for precision medicine ...
Aiqing Ma, Han Gong, Jiacheng Ouyang, Liqi Chen, Tianfang Kang, Yiran He, Guojun Huang, Sidi Zheng, Ting Yin, Hong Pan, Lintao Cai   +10 more
wiley   +1 more source

Direct integration of micromachined pipettes in a flow channel for single DNA molecule study by optical tweezers [PDF]

, 2001
Cristina Rusu, Ronny van't Oever, Meint J. de Boer, Henri Jansen, Erwin Berenschot, Martin L. Bennink, Johannes S. Kanger, B.G. de Grooth, M. Elwenspoek, Jan Greve, Juergen Brügger, Albert van den Berg   +11 more
openalex   +1 more source

Mechanical Interactions Impact the Functions of Immune Cells and Their Application in Immunoengineering

Advanced Therapeutics, EarlyView.
This review covers the mechanical forces experienced by immune cells through cell–cell and cell–extracellular matrix interactions and how these forces influence their receptors and functions. These relationships between forces and cellular functions can be exploited using engineering techniques to modify the physical properties of materials for novel ...
Yu‐Chang Chen, Nghi M. Tran, Kyle H. Vining   +2 more
wiley   +1 more source

Optical trapping and manipulating with a transmissive and polarization-insensitive metalens

Nanophotonics
Trapping and manipulating micro-objects and achieving high-precision measurements of tiny forces and displacements are of paramount importance in both physical and biological research.
Yang Dongni, Zhang Jianchao, Zhang Pengshuai, Liang Haowen, Ma Jie, Li Juntao, Wang Xue-Hua   +6 more
doaj   +1 more source

Gentle Label‐Free Nonlinear Optical Imaging Relaxes Linear‐Absorption‐Mediated Triplet

Advanced Science, EarlyView.
The phototoxicity in nonlinear optical microscopy arises mainly from linear absorption of intrinsic biomolecules rather than nonlinear absorption. This mechanism is supported by a reproducible phototoxicity assay based on widely available chicken breast.
Geng Wang, Lianhuang Li, Janet E. Sorrells, Jianxin Chen, Haohua Tu   +4 more
wiley   +1 more source