Rapid Assembly of Colloidal Crystals under Laser Illumination on a GeSbTe Substrate

Yamaguchi, Kensei; Yamamoto, Eiji; Soma, Ryo; Nakayama, Bokusui; Kuwahara, Masashi; Saiki, Takanao

doi:10.1021/acs.langmuir.9b00176

Cited by 7 publications

(4 citation statements)

References 37 publications

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“…GST undergoes a reversible change between metal-like crystalline and dielectric-like amorphous phases via thermal processes, exhibiting a huge contrast in the optical index, electronic and thermal conductivities, and hydrophilicity between its two phases. Such a distinct contrast in physical properties drastically alters the Marangoni effect [ 29 ]. As future perspective, GST can provide real-time switching and memory functionalities in the manipulation of sessile droplets [ 30 ].…”

Section: Discussionmentioning

confidence: 99%

All-Optical Rapid Formation, Transport, and Sustenance of a Sessile Droplet in a Two-Dimensional Slit with Few-Micrometer Separation

Takamatsu,

Yamato,

Kuwahara

et al. 2023

Micromachines

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We present a sessile droplet manipulation platform that enables the formation and transport of a droplet on a light-absorbing surface via local laser-beam irradiation. The mechanism relies on solutocapillary Marangoni flow arising from a concentration gradient in a binary mixture liquid. Because the mixture is strongly confined in a two-dimensional slit with a spacing of a few micrometers, the wetting film is stably sustained, enabling the rapid formation, deformation, and transport of a sessile droplet. In addition, to sustain the droplet in the absence of laser irradiation, we developed a method to bridge the droplet between the top and bottom walls of the slit. The bridge is stably sustained because of the hydrophilicity of the slit wall. Splitting and merging of the droplet bridges are also demonstrated.

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Section: Discussionmentioning

confidence: 99%

All-Optical Rapid Formation, Transport, and Sustenance of a Sessile Droplet in a Two-Dimensional Slit with Few-Micrometer Separation

Takamatsu,

Yamato,

Kuwahara

et al. 2023

Micromachines

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“…In the case of metallic particles, 2D surface plasmon excitations at metal–dielectric interfaces direct the assembly with both optical and local thermal-convection forces [ 145 ]. Furthermore, Yamaguchi et al assembled silica microspheres into hexagonally closely packed arrays or linear particle chains by changing the laser power [ 146 ].…”

Section: Assemblymentioning

confidence: 99%

Core–Shell Particles: From Fabrication Methods to Diverse Manipulation Techniques

et al. 2023

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Core–shell particles are micro- or nanoparticles with solid, liquid, or gas cores encapsulated by protective solid shells. The unique composition of core and shell materials imparts smart properties on the particles. Core–shell particles are gaining increasing attention as tuneable and versatile carriers for pharmaceutical and biomedical applications including targeted drug delivery, controlled drug release, and biosensing. This review provides an overview of fabrication methods for core–shell particles followed by a brief discussion of their application and a detailed analysis of their manipulation including assembly, sorting, and triggered release. We compile current methodologies employed for manipulation of core–shell particles and demonstrate how existing methods of assembly and sorting micro/nanospheres can be adopted or modified for core–shell particles. Various triggered release approaches for diagnostics and drug delivery are also discussed in detail.

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“…[150] On the other hand, Yamaguchi et al assembled silica microspheres into hexagonally close-packed arrays or linear particle chains by changing laser power. [151] 4 Sorting…”

Section: Lightmentioning

confidence: 99%

Core -Shell Particles: from Fabrication Methods to Diverse Manipulation Techniques

Yadav¹,

Tran²,

Teo³

et al. 2022

Preprint

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Core-shell particles are heterogenous micro- or nanoparticles with solid, liquid or gas core encapsulated by a protective solid shell. The unique composition of core and shell materials imparts smart properties to the particles. Core-shell particles are gaining increasing attention as tuneable and versatile carriers for pharmaceutical and biomedical applications including targeted drug delivery, controlled drug release, and biosensing. This review first provides an overview of fabrication methods for core-shell particles, followed by a brief discussion on their application and a detailed analysis on manipulation including assembly, sorting, and triggered release. We compile current methodologies employed for manipulation of core-shell particles and demonstrate how existing methods of assembly and sorting micro/nanospheres can be adopted or modified for core-shell particles. Various triggered release approaches for diagnostics and drug delivery are also discussed in detail.

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Rapid Assembly of Colloidal Crystals under Laser Illumination on a GeSbTe Substrate

Cited by 7 publications

References 37 publications

All-Optical Rapid Formation, Transport, and Sustenance of a Sessile Droplet in a Two-Dimensional Slit with Few-Micrometer Separation

All-Optical Rapid Formation, Transport, and Sustenance of a Sessile Droplet in a Two-Dimensional Slit with Few-Micrometer Separation

Core–Shell Particles: From Fabrication Methods to Diverse Manipulation Techniques

Core -Shell Particles: from Fabrication Methods to Diverse Manipulation Techniques

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