公开(公告)号：US20010046293A1

公开(公告)日：2001-11-29

申请号：US09788159

申请日：2001-02-16

Applicant: Kent State University

Inventor： James T. Gleeson

IPC: G06F007/58

CPC classification number: H04L9/001 ,  G06F7/588 ,  H04L9/0861

Abstract: A method for generating random numbers includes the steps of providing a liquid crystal cell containing a liquid crystal material, wherein a potential difference is applied across said liquid crystal material to cause a chaotic turbulent flow. The resulting flow or physical result of the liquid crystal material is measured to generate a baseline measurement, and subsequently the at least one physical property is measured again to generate a plurality of reading measurements. Determining the difference between each of the reading measurements and the baseline measurement, and setting bits based on the differences generates a sequence of random numbers. An apparatus for generating random numbers is also disclosed. These truly random numbers may then be used to encrypt data prior to transmission.

Abstract translation: 一种产生随机数的方法包括提供含有液晶材料的液晶单元的步骤，其中在所述液晶材料之间施加电位差以引起混沌湍流。 测量所得到的液晶材料的流动或物理结果以产生基线测量，随后再次测量至少一个物理特性以产生多个读数测量。 确定每个读取测量值与基线测量值之间的差异，并根据差异设置位数产生一系列随机数字。 还公开了一种用于产生随机数的装置。 然后可以将这些真正的随机数用于在传输之前加密数据。

公开(公告)号：US20040263772A1

公开(公告)日：2004-12-30

申请号：US10609115

申请日：2003-06-27

Applicant: Kent State University

Inventor： James T. Gleeson ,  Joshua S. Martin

IPC: G02F001/13

CPC classification number: G02F1/13743 ,  G02F2201/305

Abstract: A method for producing a diffraction grating is provided. First, a mixture including nematic liquid crystal, dopant, and polymerizable precursor is introduced between two electrically conductive substrates having alignment layers for inducing orientation of the liquid crystal director. A potential difference is applied across the liquid crystal to cause a spontaneous self-assembly of the liquid crystal into an array of convective rolls. Thereafter, the roll structure is stabilized by the creation of a polymeric network through polymerization and/or cross-linking of the polymerizable precursor. The convective roll structure serves as a template for the formation of the polymeric network.

Abstract translation: 提供了衍射光栅的制造方法。 首先，将具有向列液晶，掺杂剂和可聚合前体的混合物引入具有用于引导液晶导向体的取向的取向层的两个导电基板之间。 在液晶上施加电位差，使液晶自发自组装成对流辊阵列。 此后，通过聚合和/或交联可聚合前体产生聚合物网络来使辊结构稳定。 对流辊结构用作形成聚合物网络的模板。