Bimetallic micromotor autonomously movable in biofuels

Annual Rev. Anal. Chem.

Das

et al. 2015

151

108

Synthetic nano- and microscale machines move autonomously in solution or drive fluid flows by converting sources of energy into mechanical work. Their sizes are comparable to analytes (sub-nano- to microscale), and they respond to signals from each other and their surroundings, leading to emergent collective behavior. These machines can potentially enable hitherto difficult analytical applications. In this article, we review the development of different classes of synthetic nano- and micromotors and pumps and indicate their possible applications in real-time in situ chemical sensing, on-demand directional transport, cargo capture and delivery, as well as analyte isolation and separation.

Section: Chemical Sensing With Synthetic Motorsmentioning

confidence: 99%

Synthetic Nano- and Micromachines in Analytical Chemistry: Sensing, Migration, Capture, Delivery, and Separation

Duan

Annual Rev. Anal. Chem.

Das

et al. 2015

151

108

“…However, microscale selfpropulsion is not confined to the biological realm. Inspired by swimming microorganisms, the design of many synthetic swimmers has attempted to reproduce the motions of appendages such as cilia (Dreyfus et al 2005, Sanchez et al 2011 or flagella (Ghosh & Fischer 2009, Zhang et al 2010), which are found on both eukaryotic and prokaryotic cells. This motion must be actuated by external forces, such as those exerted by magnetic fields, and thus most synthetic mechanical swimmers are not truly autonomous motors.…”

Section: Introductionmentioning

confidence: 99%

Phoretic Self-Propulsion

Moran

Posner

2017

Annu. Rev. Fluid Mech.

369

385

It is well-known that micro- and nanoparticles can move by phoretic effects in response to externally imposed gradients of scalar quantities such as chemical concentration or electric potential. A class of active colloids can propel themselves through aqueous media by generating local gradients of concentration and electrical potential via surface reactions. Phoretic active colloids can be controlled using external stimuli and can mimic collective behaviors exhibited by many biological swimmers. Low–Reynolds number physicochemical hydrodynamics imposes unique challenges and constraints that must be understood for the practical potential of active colloids to be realized. Here, we review the rich physics underlying the operation of phoretic active colloids, describe their interactions and collective behaviors, and discuss promising directions for future research.

“…Artificial micro/nanomotors are tiny objects that can autonomously move under the influence of an appropriate source of energy, such as chemical fuels, , magnetic field, , electrical field, , ultrasound, , or light , and so forth, and hold considerable promise for diverse future applications. Catalytic nanomotors are one of the most attractive types of micro/nanomotors which can convert local chemical fuel in solution into mechanical work, and they exhibit outstanding potentials in various fields, ranging from environmental remediation , to biomedical applications. , However, most self-propelled systems reported so far, such as metallic nanowires, , microtubular microrockets, , Janus micro-spheres, , and supermolecule-based nanomotors, , require toxic chemical fuels (H 2 O 2 , I 2 , Br 2 , and N 2 H 4 ), greatly limiting their practical applications. As a result, operating artificial micro/nanomotors efficiently with biocompatible fuels in order to broaden their practical applications is still a great challenge in nanotechnology.…”

Section: Introductionmentioning

confidence: 99%

Glucose-Fueled Micromotors with Highly Efficient Visible-Light Photocatalytic Propulsion

Dong

ACS Appl. Mater. Interfaces

et al. 2019

Synthetic micro-nanomotors fueled by glucose are highly desired for numerous practical applications due to the biocompatibility of their required fuel. However, currently all of the glucose-fueled micro/nanomotors are based on enzyme-catalytic driven mechanisms, which usually suffer from strict operation conditions and weak propulsion characteristics that greatly limit their applications. Here, we report a highly efficient glucose-fueled cuprous oxide@N doped carbon nanotube