Petrochenko P.E.,U.S. Food and Drug Administration |
Petrochenko P.E.,North Carolina State University |
Zhang Q.,U.S. Food and Drug Administration |
Wang H.,Sun Innovations Inc |
And 5 more authors.
International Journal of Applied Ceramic Technology | Year: 2012
The in vitro cytotoxicity and cellular uptake of commercially available doped YVO 4 were evaluated in RAW 264.7 macrophages using the MTT assay. The results indicated that 20-50 nm diameter samarium-doped YVO 4 showed significant toxicity at concentrations of 25 μg/mL and higher; samples of the same material functionalized with COOH showed less cytotoxicity. At concentrations of 25-100 μg/mL, 20-50 nm erbium-doped YVO 4 showed less toxicity compared with 20-50 nm samarium-doped YVO 4. Ten nanometer samples showed no toxicity at concentrations of 100-600 μg/mL. The cytotoxicity of rare earth nanoparticles in macrophages is dependent, at least in part, on size and surface functionalization. © 2012 The American Ceramic Society.
Sun T.,Sun Innovations INC. |
Pettitt G.,Texas Instruments |
Ho N.T.,Texas Instruments |
Eckles K.,Texas Instruments |
And 2 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012
Front digital projection (FDP) displays have the features of being portable, economical and scalable for large size displays. Unfortunately, existing FDP technologies suffer with poor image contrast in well-lighted environments, due to the "black-level" issues of the conventional white diffusive screens. More powerful projectors can be applied to enhance contrasts by increasing the brightness, at the expenses of significantly increased cost, weight, power consumption, and viewer eye fatigue due to the bright projection. In this joint paper, we demonstrate an innovative full color, high contrast front projective display system on a black emissive screen (BES). It comprises of a novel transparent fluorescent screen on pitch-black substrate, and a digital image projector with optic output that excite the fluorescent screen. The fluorescent layered screen is comprised of at least 3 layers of RGB emissive materials, which are made in fully transparent form. The "excitation" projector is based on DLP® projector platform, where a UHP lamp is filtered by a color filter wheel which sequentially excites the RGB emissive layers resulting in RGB emissions from the screen. This display combines the best of both worlds of front projection and emissive display technologies. Like projection displays, it is scalable and economic at large displays, the screen has no pixel structure and can be manufactured using a roll to roll method. Like emissive displays (e.g. plasma or field emission displays with phosphor screen), the quality of the emissive images on black back-plate is superior, with large viewing angles and superior contrasts in any environments. The new projection display can favorably compete with existing flat panel displays and other projection displays. © 2012 SPIE.
Sun T.X.,Sun Innovations Inc.
Digest of Technical Papers - SID International Symposium | Year: 2015
Sun Innovations developed a full-windshield head-up display (FW-HUD). This new display is based on emissive projection display (EPD) technology, to form photo- quality images on fully transparent RGB emissive screen, after selective excitation of the screen by images in multiple UV-Vis. wavebands from projector. With the FW-HUD, information can be graphically displayed anywhere on the windshield without limitation on viewing angles. As a new tool for human-machine interface in future vehicles, FW-HUD will enable advanced augmented reality solutions over entire windshield after integration with various sensors. © 2015 SID.
Sun T.X.,Sun Innovations Inc. |
Cheng B.,Sun Innovations Inc.
Information Display | Year: 2013
An innovative emissive-projection-display (EPD) system consisting of a fully transparent fluorescent screen and a blue-light-emitting digital projector can be used for digital signage on the windows of buildings or vehicles. The screen can be applied to any window without obstructing the view through the glass. © SID 2013.
Sun T.X.,Sun Innovations Inc. |
Cheng B.,Sun Innovations Inc.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2011
In this paper, Sun Innovations demonstrates an innovative emissive projection display (EPD) system. It is comprised of a fully transparent fluorescent screen with a UV image projector. The screen can be applied to glass windows or windshield, without affecting visible light transmission. The UV projector can be based on either a DLP (digital light processor) or a laser scanner display engine. For a DLP based projector, a discharge lamp coupled to a set of UV filters can be applied to generate a full color video image on the transparent screen. UV or blue-ray laser diodes of different wavelengths can be combined with scanning mirrors to generate a vector display for full windshield display applications. This display combines the best of both worlds of conventional projection and emissive display technologies. Like a projection display, the screen has no pixel structure and can be manufactured roll to roll; the display is scalable. Like an emissive display (e.g. plasma or CRT), the quality of the image is superior, with very large viewing angles. It also offers some unique features. For example, in addition to a fully transparent display on windows or windshields, it can be applied to a black substrate to create the first front projection display on true "black" screen that has superior image contrast at low projection power. This fundamentally new display platform can enable multiple major commercial applications that can not be addressed by any of the existing display technologies. © 2011 SPIE.
Sun T.,Sun Innovations Inc. |
Wu S.,Sun Innovations Inc. |
Cheng B.,Sun Innovations Inc.
Digest of Technical Papers - SID International Symposium | Year: 2013
A novel emissive display screen will be introduced, which is water-clear with a haze level under 1%. It can be readily applied to glass windows and windshield without hiding the substrate, and convert the cover area to full-color, fully transparent digital display with unlimited viewing angles. © 2013 Society for Information Display.
Agency: National Science Foundation | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 500.00K | Year: 2009
This Small Business Innovation Research (SBIR) Phase II project will develop a novel ""fluorescent emissive projection"" (FEP) display system, which will turn a glass window or windshield into a full color, high contrast electronic display panel, without blocking the view through the glass. The team will develop novel display engines as well as quantum dots based display materials while also integrating these key components into a full color 40 inch size FEP display prototype. The reliability and regulatory concerns for commercial applications will be investigated in Phase II. If successful this innovative display-on-glass technology will create a broad spectrum of commercial applications with significant market sizes and economic benefits. Success of this project could enable a mass deployment of the display technology in commercial advertising places and automobiles. The new display technology will be applied broadly for many commercial applications, such as the display on store front glass windows or cabinets to attract consumers into stores. It will present real-time commercials on glass windows, without blocking the view into the store and its displayed merchandises. Given the huge number of glass windows and windshields where the technology can be implemented, it has very significant economic impacts.
Agency: National Science Foundation | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 491.50K | Year: 2009
This Small Business Innovation Research Phase II project is to develop a fully functional color ""transparent display screen"" prototype, based on a set of outdoor stable nano-phosphors with very high fluorescent quantum efficiency and well-controlled nano-particle sizes. With these advanced nano-phosphors, a color display windshield prototype will be developed. This novel ""transparent display screen"" technology will enable an entire vehicle windshield or building glass windows to act as an electronic display screen, without affecting the optical clarity. This innovative display technology will leverage and create a broad spectrum of commercial applications and fundamentally change the way that people use ""glass"" in many designs.
Agency: National Science Foundation | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 100.00K | Year: 2009
This Small Business Innovation Research project is to develop and apply a novel nano-crystalline functional material to existing commercial solar cells or modules, to significantly enhance their energy conversion efficiency, without incurring much cost or disruption to existing solar cell production process. By significantly enhancing the efficiency of existing solar cells, this project could impact the commercialization of solar electricity and benefit the Nation's environment as well. The proposed approach is economical and easily-adoptable step to increase output from the current commercial solar modules without changing the existing production process.
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 599.96K | Year: 2009
Spacecrafts rely on arrays of solar cells to generate electrical power. It is an on-going challenge to maximize electrical power available to spacecraft while reducing overall stowage volume and mass of solar array, which requires developing more efficient solar cells with higher specific power density. The objective of this SBIR project is to develop a generic approach, based on novel functional nano-materials, to significantly increasing the solar cell efficiency (~10%), specific power density, radiation resistance and lifetime, without adding much cost or weight to the existing solar cells. The feasibility to synthesis such nano-materials has been explored and demonstrated in Phase I. Without optimizing, preliminary test on commercial solar cells show an efficiency gain approaching 5% after applying such nano-materials. Such nano-materials will be further improved for energy efficiency and environmental durability in Phase II, to reach the objective of at least 10% gain in energy efficiency on majority of commercial solar cells.