Detail publikace

Antidurotaxis Droplet Motion onto Gradient Brush Substrates

KAJOURI, R. THEODORAKIS, P. ŽÍDEK, J. MILCHEV, A.

Originální název

Antidurotaxis Droplet Motion onto Gradient Brush Substrates

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Durotaxis motion is a spectacular phenomenon manifesting itself by the autonomous motion of a nano-object between parts of a substrate with different stiffness. This motion usually takes place along a stiffness gradient from softer to stiffer parts of the substrate. Here, we propose a new design of a polymer brush substrate that demonstrates antidurotaxis droplet motion, that is, droplet motion from stiffer to softer parts of the substrate. By carrying out extensive molecular dynamics simulation of a coarse-grained model, we find that antidurotaxis is solely controlled by the gradient in the grafting density of the brush and is favorable for fluids with a strong attraction to the substrate (low surface energy). The driving force of the antidurotaxial motion is the minimization of the droplet-substrate interfacial energy, which is attributed to the penetration of the droplet into the brush. Thus, we anticipate that the proposed substrate design offers a new understanding and possibilities in the area of autonomous motion of droplets for applications in microfluidics, energy conservation, and biology.

Klíčová slova

TRANSPORT; SURFACES; DRIVEN; MASS; DUROTAXIS; GRAPHENE

Autoři

KAJOURI, R.; THEODORAKIS, P.; ŽÍDEK, J.; MILCHEV, A.

Vydáno

6. 9. 2023

Nakladatel

American Chemical Society

Místo

WASHINGTON

ISSN

1520-5827

Periodikum

Langmuir

Ročník

39

Číslo

43

Stát

Spojené státy americké

Strany od

15285

Strany do

15296

Strany počet

12

URL

https://pubs.acs.org/doi/10.1021/acs.langmuir.3c01999

Plný text v Digitální knihovně

http://hdl.handle.net/11012/245068

BibTex

@article{BUT187490,
  author="Russell {Kajouri} and Panagiotis E. {Theodorakis} and Jan {Žídek} and Andrey {Milchev}",
  title="Antidurotaxis Droplet Motion onto Gradient Brush Substrates",
  journal="Langmuir",
  year="2023",
  volume="39",
  number="43",
  pages="15285--15296",
  doi="10.1021/acs.langmuir.3c01999",
  issn="1520-5827",
  url="https://pubs.acs.org/doi/10.1021/acs.langmuir.3c01999"
}