Active Colloids as Models, Materials, and Machines.
Annu Rev Chem Biomol Eng
; 14: 1-30, 2023 06 08.
Article
en En
| MEDLINE
| ID: mdl-36930877
Active colloids use energy input at the particle level to propel persistent motion and direct dynamic assemblies. We consider three types of colloids animated by chemical reactions, time-varying magnetic fields, and electric currents. For each type, we review the basic propulsion mechanisms at the particle level and discuss their consequences for collective behaviors in particle ensembles. These microscopic systems provide useful experimental models of nonequilibrium many-body physics in which dissipative currents break time-reversal symmetry. Freed from the constraints of thermodynamic equilibrium, active colloids assemble to form materials that move, reconfigure, heal, and adapt. Colloidal machines based on engineered particles and their assemblies provide a basis for mobile robots with increasing levels of autonomy. This review provides a conceptual framework for understanding and applying active colloids to create material systems that mimic the functions of living matter. We highlight opportunities for chemical engineers to contribute to this growing field.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Coloides
/
Modelos Teóricos
Idioma:
En
Revista:
Annu Rev Chem Biomol Eng
Año:
2023
Tipo del documento:
Article
Pais de publicación:
Estados Unidos