articleChemosensorsFeb 1, 2026GOLD OA

Advances and Prospects of Chemiresistive Breath Humidity Sensors

YQYiming QiaoMYMingna YangSRSiyu RaoCJCong JiXDXuemin Duan

Jiangxi Science and Technology Normal University · University of Utah

Indexed incrossrefdoaj

Abstract

Chemiresistive breath humidity sensors (CRBHSs) have emerged as a promising technology for non-invasive health monitoring, offering high sensitivity, a simple device architecture, strong miniaturization potential, and low power consumption. This review summarizes recent progress in CRBHSs from three core perspectives: sensing mechanisms, material systems, and device applications. First, we outline the fundamental sensing principles, emphasizing the Grotthuss proton-hopping mechanism and the resistance modulation associated with water adsorption/desorption. Next, we discuss structural engineering strategies for zero-dimensional (0D), one-dimensional (1D), two-dimensional (2D), and three-dimensional (3D) sensing…

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4
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Topics & keywords

Topics
Keywords
  • Miniaturization
  • Key (lock)
  • Mechanism (biology)
  • Flexibility (engineering)
  • Human health
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