.png){kind=icon}
返回
Programmable artificial phototactic microswimmer
.png){kind=icon}
PRE
AI
DOI：10.1038/NNANO.2016.187.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Phototaxis is commonly observed in motile photosynthetic microorganisms. For example, green algae are capable of swimming towards a light source (positive phototaxis) to receive more energy for photosynthesis, or away from a light source (negative phototaxis) to avoid radiation damage or to hide from predators. Recently, with the aim of applying nanoscale machinery to biomedical applications, various inorganic nanomotors based on different propulsion mechanisms have been demonstrated. The only method to control the direction of motion of these self-propelled micro/nanomotors is to incorporate a ferromagnetic material into their structure and use an external magnetic field for steering. Here, we show an artificial microswimmer that can sense and orient to the illumination direction of an external light source. Our microswimmer is a Janus nanotree containing a nanostructured photocathode and photoanode at opposite ends that release cations and anions, respectively, propelling the microswimmer by self-electrophoresis. Using chemical modifications, we can control the zeta potential of the photoanode and program the microswimmer to exhibit either positive or negative phototaxis. Finally, we show that a school of microswimmers mimics the collective phototactic behaviour of green algae in solution.
Keyword:
CHEMOTACTIC BEHAVIOR
AUTONOMOUS MOVEMENT
LIGHT
MOTORS
MICROMOTORS
NANOMOTORS
PROPULSION
LOCOMOTION
TRANSPORT
LAYER
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
34.9
论文数:
4.8K
被引数:
8.1W
机构
引用论文
A Fully Integrated Nanosystem of Semiconductor Nanowires for Direct Solar Water Splitting.png)
NANO LETTERS
OAAI
NANO LETTERSIF9.1
OAAI分享收藏Catalytic Janus Motors on Microfluidic Chip: Deterministic Motion for Targeted Cargo Delivery微流控芯片上的催化Janus电机: 目标货物输送的确定性运动ACS NANO
ACS NANOIF16
PREAI
分享收藏分享收藏Acid-base properties and zeta potentials of self-assembled monolayers obtained via in situ transformationsLANGMUIR
LANGMUIRIF3.9
PREAI
分享收藏
查看更多内容