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公开(公告)号：WO2018213819A1
公开(公告)日：2018-11-22
申请号：PCT/US2018/033590
申请日：2018-05-21
Inventor： MCGINTY, Colin , BOS, Philip J. , FINNEMEYER, Valerie A. , REICH, Robert K. , CLARK, Harry R. , BERRY, Shaun R.
Abstract: A method for producing a photostable reactive mesogen alignment layer includes infusing an anisotropic dye into a microcavity so as to coat the an surface of the microcavity with the anisotropic dye; illuminating the anisotropic dye with polarized light so as to form an anisotropic dye layer aligned with respect to the inner surface of the microcavity; infusing a reactive mesogen and the liquid crystal material into the microcavity; illuminating the reactive mesogen at a wavelength selected to cause polymerization of the layer of the reactive mesogen so as to form a polymerized reactive mesogen layer; aligning the liquid crystal material with respect to the anisotropic dye layer; and bleaching the anisotropic dye layer.
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公开(公告)号：WO2016037061A1
公开(公告)日：2016-03-10
申请号：PCT/US2015/048548
申请日：2015-09-04
Inventor： FINNEMEYER, Valerie A. , REICH, Robert K. , CLARK, Harry R. , BOZLER, Carl O. , BERRY, Shaun R. , BOS, Philip J. , BRYANT, Douglas R.
IPC: C09K19/52 , G02F1/1337 , G02F1/137
CPC classification number: G02F1/133711 , C09K19/56 , G02F1/133377 , G02F1/133788 , G02F2001/133726 , G02F2202/043
Abstract: Liquid crystal photonic devices and microcavities filled with liquid crystal materials are becoming increasingly popular. These devices often present a challenge when it comes to creating a robust alignment layer in pre-assembled cells. Previous research on photo-definable alignment layers has shown that they have limited stability, particularly against subsequent light exposure. A method of infusing a dye into a microcavity to produce an effective photo-definable alignment layer is described, along with a method of utilizing a pre-polymer infused into the microcavity mixed with the liquid crystal to provide photostability. In this method, the polymer layer, formed under optical irradiation of liquid crystal cells, is effectively localized to a thin region near the substrate surface and thus provides a significant improvement in the photostability of the liquid crystal alignment. This versatile alignment layer method, which can be used in microcavities to displays, offers significant promise for new photonics applications.
Abstract translation: 液晶光子器件和充满液晶材料的微腔变得越来越受欢迎。 当在预组装电池中创建稳健的配向层时，这些器件通常会面临挑战。 以前对光可定义对准层的研究表明，它们具有有限的稳定性，特别是对后续的曝光。 描述了将染料注入微腔以产生有效的光可定义取向层的方法，以及利用注入到与液晶混合的微腔中的预聚物以提供光稳定性的方法。 在该方法中，在液晶单元的光照射下形成的聚合物层有效地定位于基板表面附近的薄区域，从而显着地提高了液晶取向的光稳定性。 这种可用于显微镜的多功能对准层方法为新光子学应用提供了重要的前景。
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公开(公告)号：WO2018194657A1
公开(公告)日：2018-10-25
申请号：PCT/US2017/028846
申请日：2017-04-21
Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Inventor： CLARK, Harry R. , LYSZCZARZ, Theodore M.
Abstract: A novel system for generating random numbers is disclosed. The radioactive source emits photons, which causes the release of electrons on the surface of the detector. The detector is configured as a two dimensional array having a plurality of pixels. This release of electrons creates a splatter pattern on the detector, which is then read by the processor. Subsequent photon emissions create a second splatter pattern, which is then read by the processor. The processor compares these two splatter patterns, and generates random numbers based on these two splatter patterns. In certain embodiments, the processor creates a difference matrix which represents a comparison of the two splatter patterns. The processor then classifies each pixel in the difference matrix in accordance with certain rules. In certain embodiments, these classification rules may vary as a function of time or as a function of where on the detector the pixel is disposed.
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