Stroock, assistant professor of chemical and biomolecular engineering, and Wheeler, a graduate student in his lab, used pHEMA hydrogel, or polyhydroxyethyl methacrylate, to form the plant membranes.

• 原因要么是人造通道太脆弱，无法承受压力差异，要么是通道壁的微小瑕疵导致了“栓塞”，从而阻断了整个系统。