2021
DOI: 10.1021/acs.jpclett.1c02658
|View full text |Cite
|
Sign up to set email alerts
|

Semiconductor-Based Microswimmers: Attention to Detail Matters

Abstract: Colloidal active matter is known for its sensitivity to external conditions; for example, the swimming speeds depend strongly on substrates, fuel concentration, and in the case of light-driven colloids, the illumination. While these points are regularly considered, the nanoscopic material properties of the motor bodies are often barely mentioned, but they are highly influential in the case of photocatalysts. In order to demonstrate the influence of subtle differences in chemical composition and interfacing bet… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1

Citation Types

0
15
0

Year Published

2022
2022
2024
2024

Publication Types

Select...
6

Relationship

0
6

Authors

Journals

citations
Cited by 8 publications
(15 citation statements)
references
References 40 publications
(51 reference statements)
0
15
0
Order By: Relevance
“…Therefore, our modular approach to TNA enables the scalable fabrication of multifunctional Janus microswimmers with decoupled steering (magnetic) and propulsion (light) mechanisms, similar to the “colloidal-surfers” first demonstrated by Palacci et al, and distinguishing itself from more typically studied systems where translational motion and steering are both controlled by the imposition of an externally applied magnetic field. , Directing the orientation of the hybrid magnetic-catalytic caps could also be used to rectify their orientation and thus provide a further degree of control over microswimmer speed . We furthermore expect that the ability to modify the base photocatalysts with various cocatalyst nanoparticles previously outlined will open the door to a combinatorial range of new microswimmer architectures and behaviors, which nonetheless will demand future detailed mechanistic studies …”
Section: Resultsmentioning
confidence: 99%
“…Therefore, our modular approach to TNA enables the scalable fabrication of multifunctional Janus microswimmers with decoupled steering (magnetic) and propulsion (light) mechanisms, similar to the “colloidal-surfers” first demonstrated by Palacci et al, and distinguishing itself from more typically studied systems where translational motion and steering are both controlled by the imposition of an externally applied magnetic field. , Directing the orientation of the hybrid magnetic-catalytic caps could also be used to rectify their orientation and thus provide a further degree of control over microswimmer speed . We furthermore expect that the ability to modify the base photocatalysts with various cocatalyst nanoparticles previously outlined will open the door to a combinatorial range of new microswimmer architectures and behaviors, which nonetheless will demand future detailed mechanistic studies …”
Section: Resultsmentioning
confidence: 99%
“…Beyond simple material choices, also the morphology and preparation method of the partial coating on the JP will affect their behavior. To illustrate this, Wittman et al [51] prepared two TiO 2 micromotors with morphologically different Co 3 O 2 coatings consisting of either nanocubes or platelets, respectively (Figure 3d). Due to the preparation method of the nanocubes (a Langmuir-Blodgett technique), the Co 3 O 2 cubes were electrically isolated from the TiO 2 cores and no photocatalytic propulsion in UV illumination was observed.…”
Section: Capped Janus Particles As Nanoswimmers 41 Non-hybrid Swimmer...mentioning
confidence: 99%
“…Artificial microswimmers are cleverly designed bioinspired nanometer-to-micrometer sized self-propelled particles. They acquire self-propulsion by taking advantage of local gradients resulting from some self-phoretic processes (e.g., diffusiophoresis, thermophoresis, or electrophoresis) occurring at the particle–solvent interfaces. ,, As the self-propulsion acts as an external energy source, there is no balance between fluctuations and dissipations; thus, active particles (APs) are typical nonequilibrium systems and exhibit correlated Brownian motion with unusual transport features. According to Pierre Curie’s conjecture, the motion of such particles can be rectified in spatial periodic structures with broken inversion symmetry. This effect is of concerted interest, both conceptual and technological.…”
mentioning
confidence: 99%
“…Artificial microswimmers are cleverly designed bioinspired nanometer-to-micrometer sized self-propelled particles [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. They acquire self-propulsion taking advantage of local gradients resulting from some selfphoretic processes (e.g., diffusiophoresis, thermophoresis or electrophoresis) occurring at the particle-solvent interfaces [9-11, 13, 14].…”
mentioning
confidence: 99%