Illuminating the impact of non-aqueous solvents on optical trapping DOI Creative Commons
Brandon Reynolds, Matthew J. Crane

Published: Nov. 25, 2024

The optical trapping of colloidal semiconductor nanomaterials would enable single-particle photophysics, sensing, and chemical measurements. Yet, the these materials has lagged behind other dielectric metallic due to prevalence aqueous solvents in experiments, which are not suitable for many semiconductors. Here, we trap particles multiple study impact non-aqueous on dynamics. These experiments calculations show that there exists an optimal refractive index media maximizes strength, nanomaterials, a universal relationship enhance strength. We also find viscosity no only changes residence times unstable traps. results provide understanding how solvent selection impacts dynamics general design rules solvents, opening door improved chemistry, photophysics studies using nanomaterials.

Language: Английский

Subwavelength-scale off-axis optical nanomanipulation within Gaussian-beam traps DOI Creative Commons
Lei‐Ming Zhou, Wan Chang Sun,

Z. Tao

et al.

Nanophotonics, Journal Year: 2025, Volume and Issue: 14(2), P. 219 - 228

Published: Jan. 23, 2025

Abstract It is generally recognized that there only a single optical potential-well near the focus in traps with focused Gaussian beam. In this work, we show classic Gaussian-beam trap has additional potential-wells for manipulation at subwavelength scale off-focus transverse plane. The are formed by synergy of both gradient trapping force and scattering force, though previous studies usually adverse effect such as reducing stability. These work not metallic particles, but also high refractive-index dielectric particles. By engineering contribution through particle size, material position plane, field can be tailored to trap/manipulate nanoparticles different off-axis distance scale. Our provides new insight into tweezers promises applications nanomanipulation, nanoparticle sorting/separation, patterning micro-fabrication on substrates.

Language: Английский

Citations

0
Pushing the Frontiers: Artificial Intelligence (AI)‐Guided Programmable Concepts in Binary Self‐Assembly of Colloidal Nanoparticles DOI Creative Commons
Cancan Li, Lindong Ma, Zhenjie Xue

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 26, 2025

Abstract Colloidal nanoparticle self‐assembly is a key area in nanomaterials science, renowned for its ability to design metamaterials with tailored functionalities through bottom‐up approach. Over the past three decades, advancements synthesis and assembly control methods have propelled transition from single‐component binary assemblies. While has been recognized as significant concept materials design, potential intelligent customized often overlooked. It argued that future trend of nanocrystalline superlattices (BNLSs) can be analogous ‘0s’ ‘1s’ computer programming, customizing their precise these basic units could significantly expand application scope. This review briefly recaps developmental trajectory assembly, tracing evolution simple assemblies complex co‐assemblies unique property changes they induce. Of particular significance, this explores prospects co‐assembly, viewed lens ‘AI‐guided programmable assembly’. Such an approach shift paradigm passive active, leading creation new disruptive properties driving profound across multiple high‐tech fields.

Language: Английский

Citations

0
Illuminating the impact of non-aqueous solvents on optical trapping DOI Creative Commons
Brandon Reynolds, Matthew J. Crane

Published: Nov. 25, 2024

The optical trapping of colloidal semiconductor nanomaterials would enable single-particle photophysics, sensing, and chemical measurements. Yet, the these materials has lagged behind other dielectric metallic due to prevalence aqueous solvents in experiments, which are not suitable for many semiconductors. Here, we trap particles multiple study impact non-aqueous on dynamics. These experiments calculations show that there exists an optimal refractive index media maximizes strength, nanomaterials, a universal relationship enhance strength. We also find viscosity no only changes residence times unstable traps. results provide understanding how solvent selection impacts dynamics general design rules solvents, opening door improved chemistry, photophysics studies using nanomaterials.

Language: Английский

Citations

1