Field-effect gating with solid dielectrics is the basis for modern electronics. Electrolyte gating, however, offers far higher polarizations. Indeed, electrolyte gating has been a breakthrough to electrically induce numerous phase transitions in solids [1,2,3]. These experiments are all done by dripping mm-size drops of the electrolytes onto the active sample. Compared to integrated circuit technology this approach seems “stone-age” to us. These drops are open to the environment, and allow only for limited purity and reproducibility.
Heterostructure electronic circuits have, up to now, been comprised of solid materials only. We have opened this materials space to also include liquids. We demonstrate integrated liquid capacitors and integrated liquid field effect devices which are of equal quality or even outperform standard, bulk devices. This work will accelerate discoveries based on electrolyte gating by providing a new platform, and opens a new area to exploit liquid/solid interfaces in integrated functional devices with technological promise.
Bhagwati Prasad, G. Pfanzelt, Evangelos Fillis-Tsirakis, M. J. Zachman, L. F. Fitting Kourkoutis, and J. Mannhart, "Pattering liquids: A novel approach to integrate functional liquids with solid state devices (Conference Presentation)," Proc. SPIE 10584, Novel Patterning Technologies 2018, 105840W (Presented at SPIE Advanced Lithography: March 01, 2018; Published: 19 March 2018); https://doi.org/10.1117/12.2303585.5754441844001.
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