光电镊中定向捕获和定位微粒的梯度光场

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-06-16 DOI:10.1063/5.0280062

Chaonan Zhang, Liping Pan, Shuzhang Liang, Lin Feng

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引用次数: 0

摘要

本研究提出了在光电镊中使用梯度光场来实现微粒在稳定平衡位置的定位。通过设计具有强度梯度的光模式，产生空间变化的介电泳力，使微粒操纵成为可能。首先，模拟了梯度光诱导的电场和力特性。随后，实验结果表明，由于力的变化，微粒沿着光强增加的方向运动并达到稳定的位置。此外，当一个额外的微粒被引入到梯度光模式，粒子相互作用导致另一个平衡状态。结果表明，梯度光可以应用于微粒子的定向定位。该方法为研究生物颗粒或细胞提供了一种无标记的方法，在定位分类中具有潜在的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Gradient light field for directional capturing and positioning microparticle in optoelectronic tweezers

This study presents a gradient-light field in optoelectronic tweezers to achieve locating microparticles at a stable equilibrium position. By designing a light pattern with intensity gradients, a spatially varying dielectrophoretic force is generated, enabling microparticle manipulation. First, the electric field and force characters induced by gradient light are simulated. Subsequently, experimental results demonstrate that microparticles are moved along the direction of increasing light intensity and reach a stable position due to the change in force. Moreover, when an additional microparticle is introduced into the gradient light pattern, particle interactions lead to the other equilibrium state. The results verify that gradient light can be applied to directional positioning microparticles. The proposed method offers a label-free approach for studying bioparticles or cells with potential applications in positioning classification.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.