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The Guest Host Mode of LCD is doped the dichroic dyes in liquid crystal and it have anisotropic absorbefacient. This operation mode can produce dark or brightness to achieve display target by the electric field and this can operate in the non-polarizer type to achieve high reflectance. Because of market requirement in the e-paper display, so the reflective LCD by the guest host mode is a focal once again. In this study, we will doped the black dichroic dyes in liquid crystal and than we fill into the homogenous alignment cell by difference rubbing direction and homeotropic alignment cell to investigate the optical-electric characteristic in the non-polarizer and polarizer type, because in the difference alignment condition can influence the behavior of dichroic dyes, and we fabricate the double cell to improve the optical-electric characteristic. The reflective type guest host display still have many research space, like dope the dichroic dye in PDLC(polymer dispread liquid crystals) or cholesteric liquid crystal to achieve flexible and bistable characteristic.

The Sunset is a natural phenomenon that occurs every single day. Arguably, the sunset is one of the most romanticized natural event in all forms of art. In this wider context, the hypothesis posits architecture as an instrument to amplify specific visible aspects of the setting sun. The guidance for development relies on deconstructing and intensifying a specific spatial condition that interacts with effect the rays of the evening sun. Set in focus are three particular elements of the sunset, color, light, view and the subsequent darkness. In this architectural array, the chosen aspects of sunset are awarded a specific presence in their dedicated spaces. The spaces presenting those specific aspects of the sunset are organized as a sequence in the architectural construct of a long tunnel-like pathway. A culminating moment of totality emerges after the encounter of the specific aspects. / Master of Architecture / The Sunset is a natural phenomenon that occurs every single day. Arguably, the sunset is one of the most romanticized natural event in all forms of art. In this wider context, the hypothesis posits architecture as an instrument to amplify specific visible aspects of the setting sun. The guidance for development relies on deconstructing and intensifying a specific spatial condition that interacts with effect the rays of the evening sun. Set in focus are three particular elements of the sunset, color, light, view and the subsequent darkness. In this architecturalarray, the chosen aspects of sunset are awarded a specific presence in their dedicated spaces. The spaces presenting those specific aspects of the sunset are organized as a sequence in the architectural construct of a long tunnel-like pathway. A culminating moment of totality emerges after the encounter of the specific aspects.

ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NV / The need for increased downlink data rates and bandwidth for Earth Observation (EO) missions is driving mission planners to consider Ka-Band (25.5 to 27.0 GHz) downlinks to replace or augment the existing X-Band (8.025 to 8.400 GHz) services. Future ground stations will be required to support both bands as well as S-Band (2.0-2.3) GHz telemetry and command functions. This paper discusses the inherent tradeoffs in such a design, and proposes an implementation which permits simultaneous data reception in X-Band and Ka-Band, while providing TT&C functionality at S-Band. Analytical and measured data for the implementation are provided.

ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / A novel dual-band S and C band antenna for high-performance autotracking applications is described. The antenna provides simultaneous dual band coverage for targets with circular or linear polarization. A vertex mounted C-band multi-mode common aperture feed is added in a Cassegrain configuration augmenting the existing ViaSat patented [1-4] ESCAN® S-band prime focus feed. A dichroic subreflector is also added allowing simultaneous dual band operation for the prime focus and Cassegrain configurations with minimal interaction. Existing S-band antennas are easily upgraded for dual band capability with only the additions of the vertex mounted C-band feed and dichroic subreflector.

Liquid crystals are traditionally aligned via a rubbed substrate. The rubbing creates anisotropic defects and strain in the material which provide an energetically favorable orientation for the liquid crystal (LC). This is a well-developed technology that is used in virtually all liquid crystal displays (LCDs). However, it is only capable of uniform alignment on a large planar substrate. This work utilizes a new class of photoalignment materials (PM) that replace the traditional buffing technique. PMs allow for patterned LC alignment using polarized photo-lithography. Further, instead of using a nematic liquid crystal, a UV curable liquid crystal polymer (LCP) is coated on this patterned alignment material. This generates a cured, aligned, and patterned thin film that has retardance and diattenuation if a dichroic dye is incorporated in the LCP. Using these materials and methods, retarders, polarizers, and polarized fluorescent sources are fabricated with dimensions as small as a few microns. In addition to exploring the material and processing properties of the PM and LCP system, arrays of micropolarizer are fabricated for the construction of a prototype polarization camera, termed an imaging polarimeter. An imaging polarimeter is a device that measures not only the intensity but also the polarization state of a light field. My imaging polarimeter design incorporates a patterned LCP polarizer focal plane array (FPA) that is aligned and mounted to a charge-couple-device (CCD) image sensor. A polarizer FPA allows an individual pixel on a CCD sensor to detect a unique polarization state, such as a specific linear polarization orientation or right or left handed circular polarization. Neighboring pixels are designed to detect different states and each cluster can then estimate the incident polarization state. Results of a linear LCP polarimeter operating in the visible spectrum are presented.

In this study the impact of outdoor temperature variations and solar illumination exposure on spectral filter material and holographic optical elements is examined. Although holographic components have been shown to be useful for solar spectrum splitting designs, relatively little quantitative data exist to demonstrate the extent to which these materials can withstand outdoor conditions. As researchers seek to investigate practical spectrum splitting designs, the environmental stability of holographic materials should be considered as an important factor. In the experiment presented, two holographic materials, Covestro Bayfol HX photopolymer and dichromated gelatin, and 3M reflective polymer filter materials are exposed to outdoor conditions for a period of several months. The environmental effect on absorption, spectral and angular bandwidth, peak efficiency, and Bragg matching conditions for the holograms are examined. Spectral bandwidth and transmittance of the 3M reflective filter material are also monitored. Holographic gratings are recorded, measured, and mounted on glass substrates and then sealed with a glass cover plate. The test samples are then mounted on a photovoltaic panel to simulate realistic temperature conditions and placed at an outdoor test facility in Tucson, Arizona. A duplicate set of holograms and 3M filter material is stored as a control group and periodically compared over the test period.

ITC/USA 2012 Conference Proceedings / The Forty-Eighth Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2012 / Town and Country Resort & Convention Center, San Diego, California / A new common aperture autotracking C-band feed, specifically designed to accurately track fast moving targets such as the Lance missile, is reviewed. Measured data demonstrates exceptional tracking modulation required for good tracking performance while simultaneously providing excellent data channel performance for high G/T over the entire 4.40-5.25 GHz band. The new patent applied for feed design allows users to maintain existing L/S-band capability with a cost effective field upgrade which adds high performance C-band capability to an existing telemetry tracking system.

Woven Light Interference looks into the light and colour phenomenon interference in a textile design context. This is done by introducing dichroic filters to design structures and patterns when weaving. The experimental design research methodology was used to explore dichroic filters’ design possibility and potential, using a textile weaving technique for a spatial context. The final result is visually presented in a collection consisting of six woven textiles that have multiple expressions with internal and external effects. Together, they propose new methods of working with light and colour in the textile design, without incorporating electronics or being connected to wires, but rather change depending on the existing ambient light of a space.

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