@article{LiuGouldRudolphetal.2020,
  author    = {Liu, Yue and Gould, Oliver E. C. and Rudolph, Tobias and Fang, Liang and Kratz, Karl and Lendlein, Andreas},
  title     = {Polymeric microcuboids programmable for temperature-memory},
  series = {Macromolecular materials and engineering},
  volume    = {305},
  journal   = {Macromolecular materials and engineering},
  number    = {10},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {1438-7492},
  doi       = {10.1002/mame.202000333},
  pages     = {7},
  year      = {2020},
  abstract  = {Microobjects with programmable mechanical functionality are highly desirable for the creation of flexible electronics, sensors, and microfluidic systems, where fabrication/programming and quantification methods are required to fully control and implement dynamic physical behavior. Here, programmable microcuboids with defined geometries are prepared by a template-based method from crosslinked poly[ethylene-co-(vinyl acetate)] elastomers. These microobjects could be programmed to exhibit a temperature-memory effect or a shape-memory polymer actuation capability. Switching temperaturesT(sw)during shape recovery of 55 +/- 2, 68 +/- 2, 80 +/- 2, and 86 +/- 2 degrees C are achieved by tuning programming temperatures to 55, 70, 85, and 100 degrees C, respectively. Actuation is achieved with a reversible strain of 2.9 +/- 0.2\% to 6.7 +/- 0.1\%, whereby greater compression ratios and higher separation temperatures induce a more pronounced actuation. Micro-geometry change is quantified using optical microscopy and atomic force microscopy. The realization and quantification of microparticles, capable of a tunable temperature responsive shape-change or reversible actuation, represent a key development in the creation of soft microscale devices for drug delivery or microrobotics.},
  language  = {en}
}
@article{JulichGrunerLoewenbergNeffeetal.2013,
  author    = {Julich-Gruner, Konstanze K. and L{\"o}wenberg, Candy and Neffe, Axel T. and Behl, Marc and Lendlein, Andreas},
  title     = {Recent trends in the chemistry of shape-memory polymers},
  series = {Macromolecular chemistry and physics},
  volume    = {214},
  journal   = {Macromolecular chemistry and physics},
  number    = {5},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {1022-1352},
  doi       = {10.1002/macp.201200607},
  pages     = {527 -- 536},
  year      = {2013},
  abstract  = {Shape-memory polymers (SMPs) are stimuli-sensitive materials capable of performing complex movements on demand, which makes them interesting candidates for various applications, for example, in biomedicine or aerospace. This trend article highlights current approaches in the chemistry of SMPs, such as tailored segment chemistry to integrate additional functions and novel synthetic routes toward permanent and temporary netpoints. Multiphase polymer networks and multimaterial systems illustrate that SMPs can be constructed as a modular system of different building blocks and netpoints. Future developments are aiming at multifunctional and multistimuli-sensitive SMPs.},
  language  = {en}
}