Jump to main content
Jump to site search

Issue 26, 2018
Previous Article Next Article

Thermal molecular focusing: tunable cross effect of phoresis and light-driven hydrodynamic focusing

Author affiliations

Abstract

The control of solute flux by either microscopic phoresis or hydrodynamic advection is a fundamental way to transport molecules, which are ubiquitously present in nature and technology. We study the transport of large solutes such as DNA driven by a time-dependent thermal field in a polymer solution. Heat propagation of a heat spot moving back and forth gives rise to the molecular focusing of DNA with frequency-tunable control. We develop a model where the viscoelastic expansion of a solution and the viscosity gradient of a smaller solute are coupled, which explains the underlying hydrodynamic focusing. This effect offers novel non-invasive manipulation of soft and biological materials in a frequency-tunable manner.

Graphical abstract: Thermal molecular focusing: tunable cross effect of phoresis and light-driven hydrodynamic focusing

Back to tab navigation

Supplementary files

Publication details

The article was received on 11 Apr 2018, accepted on 06 Jun 2018 and first published on 08 Jun 2018


Article type: Paper
DOI: 10.1039/C8SM00754C
Citation: Soft Matter, 2018,14, 5519-5524
  •   Request permissions

    Thermal molecular focusing: tunable cross effect of phoresis and light-driven hydrodynamic focusing

    T. Fukuyama, S. Nakama and Y. T. Maeda, Soft Matter, 2018, 14, 5519
    DOI: 10.1039/C8SM00754C

Search articles by author

Spotlight

Advertisements