DNA Origami Ring Structures as Construction Element of Self‐Thermophoretic Swimmers

Heerwig, Andreas; Schubel, Martin; Schirmer, Christine; Herms, Alexander; Cichos, Frank; Mertig, Michael

doi:10.1002/pssa.201800775

Cited by 4 publications

(4 citation statements)

References 12 publications

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“…In the first approach, Janus particles, which usually consist of a low-light-absorption core particle (e.g., silica or PS) with a partial coating of high-light-absorption materials (e.g., Au) ,− or two interconnected individual parts with different light absorptions (e.g., Au spheres attached with DNA origami) − , have been widely investigated. Typically, when a laser beam uniformly irradiates a Janus particle, a temperature gradient is built surrounding the particle (Figure a).…”

Section: Optical Manipulation Based On Thermophoresismentioning

confidence: 99%

Heat-Mediated Optical Manipulation

Chen

Zheng

2021

Chem. Rev.

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Progress in optical manipulation has stimulated remarkable advances in a wide range of fields, including materials science, robotics, medical engineering, and nanotechnology. This Review focuses on an emerging class of optical manipulation techniques, termed heat-mediated optical manipulation. In comparison to conventional optical tweezers that rely on a tightly focused laser beam to trap objects, heat-mediated optical manipulation techniques exploit tailorable optothermo–matter interactions and rich mass transport dynamics to enable versatile control of matter of various compositions, shapes, and sizes. In addition to conventional tweezing, more distinct manipulation modes, including optothermal pulling, nudging, rotating, swimming, oscillating, and walking, have been demonstrated to enhance the functionalities using simple and low-power optics. We start with an introduction to basic physics involved in heat-mediated optical manipulation, highlighting major working mechanisms underpinning a variety of manipulation techniques. Next, we categorize the heat-mediated optical manipulation techniques based on different working mechanisms and discuss working modes, capabilities, and applications for each technique. We conclude this Review with our outlook on current challenges and future opportunities in this rapidly evolving field of heat-mediated optical manipulation.

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Section: Optical Manipulation Based On Thermophoresismentioning

confidence: 99%

Heat-Mediated Optical Manipulation

Chen

Zheng

2021

Chem. Rev.

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“…The opto-thermophoretic effect actively drives the nanomotor to move opposite to the direction of the Au half-shell side at a speed up to 950 body lengths per second under a laser power of 703 kW m –2 . Different types of opto-thermophoretic nanomotors have been reported, including plasmonic nanostructures, − carbonaceous nanoparticles, − biomolecules, , and hybrid nanoparticles. − Opto-thermophoretic manipulation can be achieved at not only the nanoscale but also the macroscopic scale. The displacement of a vial of nanofluids over centimeter-scale distances has been realized by a laser beam irradiation (Figure b) .…”

Section: Applicationsmentioning

confidence: 99%

Photothermal Nanomaterials: A Powerful Light-to-Heat Converter

et al. 2023

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All forms of energy follow the law of conservation of energy, by which they can be neither created nor destroyed. Light-to-heat conversion as a traditional yet constantly evolving means of converting light into thermal energy has been of enduring appeal to researchers and the public. With the continuous development of advanced nanotechnologies, a variety of photothermal nanomaterials have been endowed with excellent light harvesting and photothermal conversion capabilities for exploring fascinating and prospective applications. Herein we review the latest progresses on photothermal nanomaterials, with a focus on their underlying mechanisms as powerful light-to-heat converters. We present an extensive catalogue of nanostructured photothermal materials, including metallic/semiconductor structures, carbon materials, organic polymers, and twodimensional materials. The proper material selection and rational structural design for improving the photothermal performance are then discussed. We also provide a representative overview of the latest techniques for probing photothermally generated heat at the nanoscale. We finally review the recent significant developments of photothermal applications and give a brief outlook on the current challenges and future directions of photothermal nanomaterials.

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“…Instead of using the naturally occurring biological components such as bacteria and enzymes with predetermined functions, techniques including DNA origami [85][86][87] enable completely customized shape geometries as well as components with modular functionality and programmability. In general, the DNA origami technique has already been employed in creating self-thermophoretic swimmers [76,88] in conjunction with regular single-material nanospheres (Figure 4e).…”

Section: Hybrid Swimmers Based On Nanospheres and Dna Nanostructuresmentioning

confidence: 99%

Nanoswimmers Based on Capped Janus Nanospheres

2022

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Nanoswimmers are synthetic nanoscale objects that convert the available surrounding free energy to a directed motion. For example, bacteria with various flagella types serve as textbook examples of the minuscule swimmers found in nature. Along these lines, a plethora of artificial hybrid and non-hybrid nanoswimmers have been introduced, and they could find many uses, e.g., for targeted drug delivery systems (TDDSs) and controlled drug treatments. Here, we discuss a certain class of nanoparticles, i.e., functional, capped Janus nanospheres that can be employed as nanoswimmers, their subclasses and properties, as well as their various implementations. A brief outlook is given on different fabrication and synthesis methods, as well as on the diverse compositions used to prepare nanoswimmers, with a focus on the particle types and materials suitable for biomedical applications. Several recent studies have shown remarkable success in achieving temporally and spatially controlled drug delivery in vitro using Janus-particle-based TDDSs. We believe that this review will serve as a concise introductory synopsis for the interested readers. Therefore, we hope that it will deepen the general understanding of nanoparticle behavior in biological matrices.

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DNA Origami Ring Structures as Construction Element of Self‐Thermophoretic Swimmers

Cited by 4 publications

References 12 publications

Heat-Mediated Optical Manipulation

Heat-Mediated Optical Manipulation

Photothermal Nanomaterials: A Powerful Light-to-Heat Converter

Nanoswimmers Based on Capped Janus Nanospheres

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