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我们发现， 液晶可以在经过低能中性氩离子束照射过的聚酰亚胺表面上取向。入射离子的能量在７５ｅＶ～５００ｅＶ之间变化； 积分电流密度在２０μＡ／ｃｍ２ ～５００μＡ／ｃｍ２之间变化； 测量取向的入射角在１０°～８０°之间变化。通过控制工艺条件，液晶的预倾角可在０°～１０°之间变化
We have found that the liquid crystal can be oriented on a polyimide surface that has been irradiated with a low-energy neutral argon ion beam. The energy of incident ions varied from 75eV to 500eV; the integral current density varied from 20μA / cm2 to 500μA / cm2; and the angle of incidence of the measured orientation varied from 10 ° to 80 °. By controlling the process conditions, the pretilt angle of the liquid crystal can vary from 0 ° to 10 °