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Updated: Apr 16, 2026

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
Published on: May 27, 2018
Formation of a nanometer-thick water layer at high humidity on a dynamic crystalline material composed of
Yumi Yakiyama1, Gil Ryeong Lee, Sung Yeon Kim
1The Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Cheongam-ro 77, Namgu, Pohang 790-784, Korea. mkawano@postech.ac.kr.
Abstract:
Crystalline powders self-assembled from interactive discrete molecules reversibly transformed from a porous structure to a 2D one with a nanometer-thick H2O layer by hydration/dehydration. Multi-point weak intermolecular interactions contributed to maintenance of each phase. This structure transformation induced a humidity-dependent ion conductivity change from insulator to 3.4 × 10(-3) S cm(-1).

