2026-03-06 ペンシルベニア州立大学（PennState）
＜関連情報＞
- https://www.psu.edu/news/research/story/tiny-thermometers-offer-chip-temperature-monitoring-processors
- https://www.nature.com/articles/s44460-026-00034-2
二次元ヘテロ構造におけるイオン-電子結合による固体温度測定 Solid-state thermometry via ionic–electronic coupling in two-dimensional heterostructures
Dipanjan Sen,Anirban Chowdhury,Safdar Imam,Anshul Rasyotra,Joan M. Redwing,Zdenek Sofer,Alireza Sepehrinezhad,Adri van Duin,Arpan Ghosh,Chen Chen,Vlastimil Mazanek,Thomas S. Ie,Mercouri G. Kanatzidis & Saptarshi Das
Nature Sensers Published:06 March 2026
DOI:https://doi.org/10.1038/s44460-026-00034-2
Abstract
The coupling of ionic and electronic transport in solid-state systems offers new opportunities for realizing compact, energy-efficient sensing technologies, yet practical implementations remain limited. Here we introduce a two-dimensional iontronic platform based on field-effect transistors that integrate monolayer MoS2 channels with van der Waals bimetallic thiophosphates (ABP2X6, A = Li, Cu, Ag and so on; B = In, Sc and so on; and X = S and Se) as ionic gate dielectrics to realize on-chip thermometry. Specifically, we exploit thermally activated ion migration within the gate dielectric leading to conductance modulation in the MoS2 channel for temperature sensing. We achieve ~1–2 °C resolution, fast electronic readout and subpicojoule energy consumption in an ultracompact footprint (~1 µm2). Beyond thermometry, these results establish bimetallic thiophosphates as a versatile platform for solid-state iontronics and broaden the functional design space of van der Waals heterostructures for sensing, actuation and adaptive electronics.
