Optical rotational self-assembly at air-water surface by a single vortex beam

Chen, Xintong; Cheng, Weizhu; Xie, Mingyuan; Zhao, Fei

doi:10.1016/j.rinp.2018.11.070

Cited by 9 publications

(4 citation statements)

References 25 publications

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“…The application of angular momentum from the LG beam to a monolayer produces shear strains that induce morphological changes, as shown schematically in Figure . LG beams are already commonly used for the optomechanical manipulation of matter at the mesoscale, most famously for optical tweezing, where transfer of orbital angular momentum from light to an object induces rotation about the beam axis. − In other experiments, mesoscopic helical polymers and metal nanoneedles have been sculpted by mass transport of molten material during illumination with an LG beam. − In this work we demonstrate a fundamentally different application of OAM: the reversible induction of shear strain in 2D materials, offering a dynamic control of the electrical and optical properties. This proof-of-principle demonstration has wide-ranging implications for optomechanical manipulation of the electronic functionality of 2D materials.…”

Section: Introductionmentioning

confidence: 94%

Spatial Control of 2D Nanomaterial Electronic Properties Using Chiral Light Beams

Lalaguna,

Souchu,

Mackinnon

et al. 2024

ACS Nano

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Single-layer two-dimensional (2D) nanomaterials exhibit physical and chemical properties which can be dynamically modulated through out-of-plane deformations. Existing methods rely on intricate micromechanical manipulations (e.g., poking, bending, rumpling), hindering their widespread technological implementation. We address this challenge by proposing an all-optical approach that decouples strain engineering from micromechanical complexities. This method leverages the forces generated by chiral light beams carrying orbital angular momentum (OAM). The inherent sense of twist of these beams enables the exertion of controlled torques on 2D monolayer materials, inducing tailored strain. This approach offers a contactless and dynamically tunable alternative to existing methods. As a proof-of-concept, we demonstrate control over the conductivity of graphene transistors using chiral light beams, showcasing the potential of this approach for manipulating properties in future electronic devices. This optical control mechanism holds promise in enabling the reconfiguration of devices through optically patterned strain. It also allows broader utilization of strain engineering in 2D nanomaterials for advanced functionalities in next-generation optoelectronic devices and sensors.

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Section: Introductionmentioning

confidence: 94%

Spatial Control of 2D Nanomaterial Electronic Properties Using Chiral Light Beams

Lalaguna,

Souchu,

Mackinnon

et al. 2024

ACS Nano

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“…LG beams have hitherto been used for the optomechanical manipulation of matter at the mesoscale, most famously for optical tweezing, where transfer of orbital angular momentum from light to an object induces rotation about the beam axis. [12][13][14][15][16][17] In other experiments, mesoscopic helical polymers and metal nanoneedles have been sculpted by mass transport of molten material during illumination with an LG beam. [18][19][20] In this work we demonstrate a Fig.…”

Section: Introductionmentioning

confidence: 99%

Optical Strain Engineering Enables Dynamic Spatial Control of 2D Nanomaterial Properties

Kadodwala,

Lalaguna,

Souchu

et al. 2023

Preprint

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In the era of next generation electronic technologies, the pursuit of reconfigurable circuitry is one of the key strategies for enhancing performance and functionality. The prevailing approach involves utilising individual components with dual functionality to provide reconfigurability. While valuable, this method remains an interim solution, necessitating a platform for recurrent circuitry redesign tailored to specific tasks. The realisation of this technological leap hinges on spatially resolved, dynamic manipulation of a material's electronic properties, an achievement demonstrated herein. We harness the optical forces and torques wielded by light beams endowed with orbital angular momentum to manipulate single monolayers of two-dimensional materials. We provide proof-of-principle evidence for the localised induction of strains that can be used to dynamically control electronic properties within a discrete area. This phenomenon, exemplified using graphene and WS2 monolayers, introduces a transformative paradigm of all-optical strain engineering. It offers an innovative strategy for reconfigurable devices, including the potential for reversible (write-erase-rewrite) optical patterning of electrical circuitry.

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“…[13][14][15] with important application prospects in the measurement field. Particle trapping and optical tweezers and wrenches have been developed using vortex beams to capture and rotate particles without contact, and have been widely used in biomedical fields [16][17][18][19][20] . In addition to the above three fields, vortex beams also have great application value in laser processing [21] , super-resolution microscopic imaging [22] , and fiber and integrated optics [23][24][25] , and so on.…”

Section: Introductionmentioning

confidence: 99%

Detection of vortex beams based on mutual interference

Yi²,

Fu³

et al. 2022

Thirteenth International Conference on Information Optics and Photonics (CIOP 2022)

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The mutual interference method is introduced to detect vortex beams. For the coaxial interference between l1-order and l2-order vortex beams, the intensity distribution is spirally fan-shaped. The partition number N=|l2-l1|, and the spiral direction can distinguish the sign of topological charge with larger absolute value between |l1| and |l2|. Fork-shaped fringes appear in the center for the small-angle interference between vortex beams with incident angle β1 and β2. The forking number between two fringes agrees with N=|l2-l1|, and the forks face upward when l1β2, or l1>l2 & β1<β2, and face downward when l1>l2 & β1>β2, or l1

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Optical rotational self-assembly at air-water surface by a single vortex beam

Cited by 9 publications

References 25 publications

Spatial Control of 2D Nanomaterial Electronic Properties Using Chiral Light Beams

Spatial Control of 2D Nanomaterial Electronic Properties Using Chiral Light Beams

Optical Strain Engineering Enables Dynamic Spatial Control of 2D Nanomaterial Properties

Detection of vortex beams based on mutual interference

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