Launch and capture of a single particle in a pulse-laser-assisted dual-beam fiber-optic trap

Fu, Zhenhai; She, Xuan; Li, Nan; Hu, Huizhu

doi:10.1016/j.optcom.2018.02.040

Cited by 9 publications

(2 citation statements)

References 32 publications

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“…Maxwell stress tensor is a tool, which is typically used for analysis. Optomechanically‐driven particle jumps from substrate scenarios have been addressed theoretically [ 51 , 52 , 53 ] and experimentally, [ 54 , 55 ] considering intense laser pulses of at least several nanoseconds in duration. However, several special conditions have been met, which are not satisfied in our case.…”

Section: Resultsmentioning

confidence: 99%

Optothermal Needle‐Free Injection of Vaterite Nanocapsules

Kislov,

Ofer,

Machnev

et al. 2023

Advanced Science

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The propulsion and acceleration of nanoparticles with light have both fundamental and applied significance across many disciplines. Needle‐free injection of biomedical nano cargoes into living tissues is among the examples. Here a new physical mechanism of laser‐induced particle acceleration is explored, based on abnormal optothermal expansion of mesoporous vaterite cargoes. Vaterite nanoparticles, a metastable form of calcium carbonate, are placed on a substrate, underneath a target phantom, and accelerated toward it with the aid of a short femtosecond laser pulse. Light absorption followed by picosecond‐scale thermal expansion is shown to elevate the particle's center of mass thus causing acceleration. It is shown that a 2 µm size vaterite particle, being illuminated with 0.5 W average power 100 fsec IR laser, is capable to overcome van der Waals attraction and acquire 15m sec−1 velocity. The demonstrated optothermal laser‐driven needle‐free injection into a phantom layer and Xenopus oocyte in vitro promotes the further development of light‐responsive nanocapsules, which can be equipped with additional optical and biomedical functions for delivery, monitoring, and controllable biomedical dosage to name a few.

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Section: Resultsmentioning

confidence: 99%

Optothermal Needle‐Free Injection of Vaterite Nanocapsules

Kislov,

Ofer,

Machnev

et al. 2023

Advanced Science

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“…Pulsed optical force: as discussed in Sec. 4.1.1, pulsed lasers could generate tremendous peak values of optical forces, which could surpass the adhesive force with moderate single-pulse energy and be used to release stuck particles from the solid substrate [241,363] . In addition, the giant magnitude of the transient scattering force can be harnessed for pulse-wise propulsion of suspended particles.…”

Section: Discussionmentioning

confidence: 99%

Optical manipulation: from fluid to solid domains

et al. 2023

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.Light carries energy and momentum, laying the physical foundation of optical manipulation that has facilitated advances in myriad scientific disciplines, ranging from biochemistry and robotics to quantum physics. Utilizing the momentum of light, optical tweezers have exemplified elegant light–matter interactions in which mechanical and optical momenta can be interchanged, whose effects are the most pronounced on micro and nano objects in fluid suspensions. In solid domains, the same momentum transfer becomes futile in the face of dramatically increased adhesion force. Effective implementation of optical manipulation should thereupon switch to the “energy” channel by involving auxiliary physical fields, which also coincides with the irresistible trend of enriching actuation mechanisms beyond sole reliance on light-momentum-based optical force. From this perspective, this review covers the developments of optical manipulation in schemes of both momentum and energy transfer, and we have correspondingly selected representative techniques to present. Theoretical analyses are provided at the beginning of this review followed by experimental embodiments, with special emphasis on the contrast between mechanisms and the practical realization of optical manipulation in fluid and solid domains.

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