A polymer gel with electrically driven motility

Yoshihito Osada, Hidenori Okuzaki & Hirofumi Hori
Nature 1992, 355, 242
and the review for the above famous research:
Synthetic gels on the move
Kanji Kajiwara and Simon B. Ross-Murphy
Nature 1992, 355, 208
and an old research:
Salting-out in Amphiphilic Gels as a New Approach to Hydrophobic Adsorption
Jerker Porath, Lars Sundberg, Nermin Fornstedt, Ingmar Olsson
Nature 1973, 245, 465