光热机械微流体：用于多尺度粒子操纵的混合光捕获和光热对流

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-09-30 DOI:10.1016/j.optlastec.2025.113995

Bingjie Li , Weitao Dai , Yiwen Yang , Xu Xia , Zhishan Hou , Wei Xue , Yu Cao

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引用次数: 0

摘要

我们提出了一种将散射力驱动推进与光热诱导对流相结合的集成双模光控光流芯片。通过嵌入12根功能化光纤（8根专用于光力，4根用于光热驱动），该平台可以实现远程（972 μm）和高速（72 μm/s）粒子控制，超过了传统光镊的有限工作距离（200 μm）。这种混合机制促进了多尺度操作，从单粒子易位到粒子集合的集体迁移，具有亚微米精度。实验和模拟结果揭示了不同激光功率和通道几何形状下粒子的尺寸依赖性动力学。这种低成本、模块化的设计为片上生物传感和微型机器人系统开辟了道路，并在颗粒分选、图案和运输方面得到了应用验证。

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Opto-thermomechanical microfluidics: hybrid optical trapping and photothermal convection for multiscale particle manipulation

An optofluidic chip with integrated dual-mode optical manipulation is proposed by us, combining scattering force-driven propulsion with photothermal-induced convection. By embedding twelve functionalized fibers—eight dedicated to optical forces and four to optothermal actuation—the platform enables long-range (972 μm) and high-speed (72 μm/s) particle control, exceeding the limited working distance (<200 μm) of conventional optical tweezers. This hybrid mechanism facilitates multiscale operations, ranging from single-particle translocation to the collective migration of particle assemblies, with sub-micron precision. Experimental and simulation results reveal size-dependent particle dynamics under varying laser powers and channel geometries. This low-cost, modular design opens avenues for on-chip biosensing and micro-robotic systems, as validated by applications in particle sorting, patterning, and transport.

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems