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@ARTICLE{Lee:1048141,
author = {Lee, Namkyu and Wiegand, Simone},
title = {3{D}-manufactured non-isothermal glass cell for
thermophoretic measurements},
journal = {Applied thermal engineering},
volume = {284},
issn = {1359-4311},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2025-04521},
pages = {128994},
year = {2026},
abstract = {Thermophoresis, the migration of particles within a thermal
gradient, presents opportunities in diverse fields ranging
from biotechnology to energy applications. The
quantification of this phenomenon, described by the Soret
coefficient $(S_T),$ requires precise control over
non-isothermal conditions, which is challenging to achieve
in conventional microfluidic devices. However, conventional
polymer-based cells are limited by a significant temperature
drop across the material and susceptibility to the adhesion
of colloidal particles. Recently, 3D-manufactured glass
cells have been shown to produce a non-isothermal
temperature field in a microchannel for inducing a
significant temperature gradient due to high thermal
conductivity, which enables temperature-dependent analysis
of thermophoresis. Herein, we present a 3D-manufactured
glass microfluidic cell for measuring the Soret coefficient
under controlled temperature gradients. The cell produces a
stable and a large temperature gradient across the channel
which allows multi-temperature measurements without
adjusting hot and cold water temperatures. The measured
Soret coefficient by the glass cell across a temperature
range of 20 °C to 30 °C shows close agreement with the
benchmark measurement data. These results show that the
3D-manufactured glass cell can not only quantify the Soret
coefficient but can also function as a solvent-resistant
device, suitable for complex biological and chemical
solutions.},
cin = {IBI-4},
ddc = {690},
cid = {I:(DE-Juel1)IBI-4-20200312},
pnm = {5241 - Molecular Information Processing in Cellular Systems
(POF4-524)},
pid = {G:(DE-HGF)POF4-5241},
typ = {PUB:(DE-HGF)16},
doi = {10.1016/j.applthermaleng.2025.128994},
url = {https://juser.fz-juelich.de/record/1048141},
}