微波非热效应——半个世纪的科学探索

Microwave non-thermal effects: Half a century of scientific exploration

摘要

系统梳理了微波非热效应领域五十年的探索历程，从概念定义、实验证据、理论争议到未来方向展开全面的综述。回顾实验层面（活化能/指前因子测定、等温对照、原位测温）与理论层面（相干电振荡、自由基对/三重态机制、膜噪声限制等）的主要成果与分歧，重点提出并扩展了“后极化效应”理论假说——通过分子动力学模拟和量子力学计算证实弱微波场能改变极性分子碰撞模式与能量分布。同时，还指出该领域面临的争议，如理论普适性不足、热效应难以完全排除等挑战。认为争议的症结在于：尚无单一理论能覆盖所有现象、量子力学与热力学的基本约束不可违背、实验上难以完全排除热路径。一旦非热效应被明确证实，它将对多个领域产生深远影响。

Abstract

This paper systematically reviews five decades of exploration in the field of microwave non-thermal effects, providing a comprehensive overview spanning conceptual definitions, experimental evidence, theoretical debates, and future directions. This review summarizes the key experimental achievements and disagreements in both the experimental and theoretical aspects, the experimental aspects include activation energy/pre-exponential factor measurements, isothermal controls, and in situ temperature measurements and the theoretical aspects include coherent electrical oscillations, radical pair/triplet mechanisms, and membrane noise limitations. The key point lies in proposing and expanding the "post-polarization effect" theoretical hypothesis, that is, through molecular dynamics simulations and quantum mechanics calculations, it has been confirmed that weak microwave fields can alter the collision patterns and energy distributions of polar molecules. This paper also identifies ongoing controversies (such as insufficient theoretical universality and the difficulty of completely ruling out thermal effects) and challenges within the field. We contend that the crux of the controversy lies in the absence of a single theory capable of explaining all phenomena, the fundamental constraints of quantum mechanics and thermodynamics that cannot be violated, and the experimental difficulty of completely excluding thermal pathways. Should non-thermal effects be definitively confirmed, they would have profound implications across multiple disciplines.

关键词

微波非热效应 / 活化能 / 指前因子 / 相干电振荡 / 自由基对 / 三重态 / 膜噪声限制 / 后极化效应

Key words

microwave non-thermal effect / activation energy / pre-exponential factor / coherent electric oscillation / radical pair / triplet / membrane noise / post-polarization

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基金资助

国家自然科学基金(U24A20225)