AI摘要：NPT adjustment causes wall dispersion and graphite interlayer separation due to incorrect pressure setting; a negative pressure is needed to maintain wall structure integrity.

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在使用npt调整壁面温度时，出现壁面散开，石墨层间分离，是因为压力没有设置正确。压力为0，系统里有真空层，石墨层倾向于分散开相对地“占满”空间。应设置一个负的压力保持壁面结构的完整性。