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@ARTICLE{MichalskaWalkowiak:906127,
author = {Michalska-Walkowiak, Joanna and Förster, Beate and
Hauschild, Stephan and Förster, Stephan},
title = {{B}istability, {R}emanence, {R}ead/write‐memory and
{L}ogic {G}ate {F}unction via {A} {S}timuli {R}esponsive
{P}olymer},
journal = {Advanced materials},
volume = {34},
number = {13},
issn = {0935-9648},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2022-01243},
pages = {2108833 -},
year = {2022},
abstract = {Stimuli-responsive materials change their state in response
to external triggers. Switching between different states
enables information to be written, stored, and read, if the
transition between the states exhibits hysteresis. Thermally
responsive polymers exhibit an intrinsic hysteresis for the
volume phase transition between the swollen and de-swollen
solution state. Here, it is shown that this hysteresis can
be used to realize bistability, remanence, and reversible
write/read information storage. This is demonstrated for the
simplest and most widely used thermoresponsive polymer,
poly(N-isopropylacrylamide) (PNIPAM), as well as for PNIPAM
block copolymers, which widens the hysteresis window. The
hysteresis is shown to be related to cluster domain
assembly/disassembly during the phase transition.
Information can be written thermally using a laser, or using
heated or cooled pen tips on a thin-film backscattering
display. The bistable state can additionally be switched by
pH, enabling an AND logic gate function. Furthermore, an
unusual memory state is discovered, where information is
visible in the hysteresis window and invisible at higher
temperatures, allowing encoded information to be hidden.
Since hysteresis is a very common intrinsic phenomenon for
responsive materials, this principle to encode and store
information is potentially applicable to a broad range of
responsive materials.},
cin = {ER-C-1 / JCNS-1},
ddc = {660},
cid = {I:(DE-Juel1)ER-C-1-20170209 / I:(DE-Juel1)JCNS-1-20110106},
pnm = {5351 - Platform for Correlative, In Situ and Operando
Characterization (POF4-535)},
pid = {G:(DE-HGF)POF4-5351},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:35040531},
UT = {WOS:000758579400001},
doi = {10.1002/adma.202108833},
url = {https://juser.fz-juelich.de/record/906127},
}