China
Africa
Explore chapters and articles related to this topic
Self-Propelled Nanomotors
Published in Klaus D. Sattler, st Century Nanoscience – A Handbook, 2020
In this chapter, we have given a brief introduction into active matter physics research and focused on catalytic self-propel nanomotors. We distinguished two types of self-propelled particles: metallic nanomotors and enzymatic nanomotors. Phoretic mechanisms, which include self-diffusiophoresis, electrophoresis, and thermophoresis, are responsible for the self-propulsion of many metallic nanomotors. This is normally achieved by introducing asymmetry in the structure of nanomotors.
Effect of Poiseuille flow on the dynamics of active vesicle
Published in Soft Materials, 2021
Prabha Chuphal, Soudamini Sahoo, Snigdha Thakur
Micro-organisms such as bacteria and other living cells are soft and deformable active particles. During the last decade, designing active particles and comprehending their dynamics has been a very dynamic area of research. These studies involve various active or self-propelled particles ranging from biological entities to synthetic systems.[1–7] A lot of effort in this area has gone into understanding the dynamics of rigid active particles.[5–11] However, the studies related to soft and deformable active particles are limited.[3,4,12,13] It is important to note that the functioning of such deforming objects is related to their shape diversity at the level of geometry, size, and attachment to various surfaces. For example, bacteria acquire distinct body shapes ranging from spheres to rods with different curvatures and helicities that lead to a variety of functioning.[14] Another beautiful example of the effect of deformability is the motion of RBC micro-swimmers when they pass through the micro-channels, which are smaller than their size. Thus, the shape perturbation helps them to preserve the integrity of their shape during the motion.[15] The deformability of these soft materials has been used to detect several human diseases in previous studies.[16,17]