Ashwin-Ushas Corp | Date: 2015-09-03
A potentiostat/galvanostat employs a controller for providing digital control signals to a digital-to-analog converter (DAC) that generates an analog output signal in response to digital control signals. A high current driver produces a high current output in response to the analog output signal from the DAC. A high current monitor monitors the output from the high current driver to produce a feedback signal for the high current driver to control the current produced by the high current driver and to produce an output dependent on the current supplied from the high current driver for monitoring by the controller. A counter electrode contact for a counter electrode is connected with the output of the high current monitor. A working electrode contact for a working electrode is electrically connected with a fixed stable voltage potential to enable electrochemical analysis of material between the counter electrode and the working electrode. A low current driver produces a low current range output in response to an analog output signal from the DAC. A low current monitor monitors the working electrode contact to detect current at the working electrode contact to supply an output dependent on the current detected for monitoring by the controller and for providing a feedback signal to the low current driver in order to control the output of the low current driver to control current between the counter electrode contact and the working electrode contact.
Ashwin-Ushas Corp | Date: 2015-06-12
A complimentary polymer or dual-polymer electrochromic device and methods of preparing the same are provided.
Ashwin-Ushas Corp | Date: 2016-05-20
The present invention provides apparatuses and methods for modulating the transmissivity of electrochromic devices utilizing a controller that provides a continuous potential that may be pulsed to the electrochromic device.
Agency: Department of Defense | Branch: Defense Health Program | Program: SBIR | Phase: Phase I | Award Amount: 149.97K | Year: 2015
Traumatic hemorrhage is associated with the development of trauma induced coagulopathy, as well as a number of responses including an inflammatory response, endothelial dysfunction, and others. These pathophysiologic reactions develop and progress rapidly, and result in increased mortality and morbidity. In order to provide effective treatment under these rapid and dynamic conditions, it is imperative to develop novel biosensor technology capable of measuring multiple analytes continuously in the blood of the patients - in real-time. In the current state-of-the-art, continuous, real-time molecular measurement is only possible for a handful of targets (e.g., glucose, lactose, oxygen), and these existing platforms for continuous measurement are not generalizable for the monitoring of other analytes [1,2]. To address this critical unmet need, the main goal of this project will be to develop a ?universal? real-time biosensor capable of continuously tracking a wide range of circulating biomarkers and drugs in living subjects. The successful implementation of such a biosensor must fulfill the following requirements: First, the sensor must operate continuously, without requirement for sample preparation or processing. Second, it must achieve sufficient sensitivity, selectivity and dynamic range, and demonstrate the ability to resolve temporal changes in analyte concentrations at physiological time-scales (i.e. minutes). Finally, it must be resistant to fouling even after prolonged exposure to complex sample mixtures such as whole blood, and remain stable while operating in this environment for extended periods of time.
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 750.00K | Year: 2012
Among thermal control methods, variable-emittance materials remain the most promising for addressing deficiencies of current systems (mechanical louvers, loop heat pipes, MEMS, electrostatics, phase change materials, others), especially, e.g., for missions in extreme light/dark environments, planetary platforms. This firm's unique, patented variable-emittance skin technology, based on conducting polymers, microporous membranes and ionic liquids, with proven, space-environment performance, remains at the world forefront, with highest known Delta-emittance, good Turn-Down Ratio (TDR), very low power, low cost. Phase I work demonstrated separate emittance variation from 0.065 to 0.816, Delta-emittance>0.48, and long-term space durability, with one "breakthrough" innovation, two very significant innovations. A clear, specific pathway was demonstrated for combining low/high emittance in single devices to achieve TDR of 7.1, possibly 10.0. Phase II work will use this as basis to increase the TDR to>7.1, possibly>10.0, keeping the dark-state emittance ca.>/= 0.80. Surface Solar Absorptance will be further reduced from present ca. 0.31 to as low as possible (objective 0.09 to 0.24). Other Phase II tasks, following completion of TDR optimization, will address Controller, further space-qualification testing, manufacture, space-flights, commercialization pathway, other issues. Two identified commercial partners will assist in marketing.
Electrochromic + Anti-Fog Personal-Protective Eyewear (PPE) Based on Unique, Very Low Power, Conductive Coatings and Leveraging Unique, ANSI Z87.1-/Military-Qualified Electrochromic Eyewear Technology
Agency: Department of Health and Human Services | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 149.90K | Year: 2015
DESCRIPTION provided by applicant With regard to Personal Protective Eyewear PPE technologies a major occupational hazard in high risk industrial sectors such as manufacturing mining construction and warehousing but one which has received very limited attention to date is that associated with the worker transitioning from very bright to dark areas fogging of protective eyewear exacerbates the situation Per OSHA statistics the number of fatal accidents potentially caused by light dark L D issues may be up to of the total in with non fatal accidents having similar proportion Current PPE technologies e g photochromics which change color with light or clip on sunshades extra sunglasses for L D control and superhydrophilic coatings or double pane polycarbonate for anti fogging are all grossly inadequate in addressing this risk Indeed the US Army Public Health Command specifically prohibits photochromics or clip ons for military personnel in outdoor indoor settings Now in very recent prior and ongoing work this firm has developed and patented a new electrochromics technology based on unique matched dual polymer conducting polymer electrochromics which change color with small e g VDC applied voltage This has excellent performance and overcomes drawbacks that have heretofore prevented practical commercial electrochromic eyewear Typical performance very high L D contrast to vs air reference thin andlt mm flexible durable lens construction unique applied potential algorithm residing on an inexpensive andlt $ Microcontroller yielding switching times of andlt s Landgt D instantaneous Dandgt L automated function photosensor based Li battery powered electrochromic spectacles goggles demonstrated very low power h with L D L switches per h before batteries need recharging uW cm VDC demonstrated as retrofit to spectacles goggles conforming to ANSI Z and US military specifications Furthermore this firm has also just developed a new active anti fogging technology proof of concept data given in this proposal The proposed work will combine these anti fogging and electrochromics technologies and will also address high volume manufacture issues It will specifically Fabricate extensively test optimize the active anti fog coatings Further optimize electrochromic lenses Modify existing electrochromics Microcontroller for anti fog operation with input from tiny cheap temperature humidity sensor Fabricate test full function electrochromics anti fog spectacles goggles Address specific high volume manufacture issues The firmandapos s ongoing collaborations or teaming relationships with several established eyewear manufacturers details herein will assist the work If successful the inexpensive andlt $ product resulting from this work will be the first commercially viable electrochromics eyewear product and also the first combining electrochromics anti fogging functionalities It will address a serious occupational hazard and drastically upgrade PPE Ancillary markets skiwear motor sports military may further lower cost PUBLIC HEALTH RELEVANCE With regard to Personal Protective Eyewear technologies PPE a major occupational hazard in high risk industrial sectors such as manufacturing mining construction and warehousing but one which has received very limited attention to date is that associated with the worker transitioning from very bright to dark areas with fogging of protective eyewear exacerbating the situation Now in very recent prior and ongoing work this firm has developed and patented a new electrochromics technology based on unique matched dual polymer conducting polymer CP electrochromics with excellent performance and which overcomes drawbacks that have heretofore prevented practical commercial electrochromic eyewear electrochromic spectacles and goggles have been demonstrated with photosensor based automated function and major eyewear manufacturer partners identified The proposed work will combine a new active anti fogging technology proof of concept data given in this proposal with this electrochromics technology and will also address high volume manufacture issues leading to a commercially viable inexpensive est andlt $ PPE product that combines electrochromism anti fog functionalities for the first time potential extensions to the military soldier use and recreational e g skiwear motor sports football markets with the potential to eventually replace the $ B est photochromics market will further lower costs for the occupational safety market
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase II | Award Amount: 743.89K | Year: 2012
ABSTRACT: Advanced Li battery technology remains beset with performance deficiencies at low/high temperatures/extreme environments (high vacuum, radiation, vibration/shock), primarily from poor conductivity/mobility in organic electrolytes used under such conditions. In this respect, electrolytes using ionic liquids, with large liquidus ranges, no vapor pressure, non-flammability, have been much studied recently, but remain unviable. Now in entirely unrelated work, in electrochromics for spacecraft thermal control operating at -80 to +100 C, this firm developed unique ionic liquids with very high conductivity and ion mobility at low temperatures and space durability. Phase I work further modified these electrolytes specifically for reentry vehicle Li batteries. Performance demonstrated included: Specific energy>339 Wh/kg at low (-40 C), room, high (+60 C) temperature;>85% capacity retention in multiple cycles; reversible capacity>145 mAh/g. The key/most important component of the new, reentry-vehicle Li battery, the electrolyte, was successfully arrived at. Phase II work will focus on: Refinement of other battery components compatible with this electrolyte, including correct anodes/cathodes; packaging suitable for reentry vehicles; further increase in performance (specific energy, capacity, peak specific power, etc.); extensive testing in reentry vehicle conditions (long-term dormancy, high-g/radiation). Commercial tie-ups with several Li battery manufacturers have been initiated, will be pursued. BENEFIT: The resulting wide-operating-temperature Li battery technology may be considered a breakthrough. Applications will be in all extreme-temperature environments where conventional Li battery (including Li ion and polymer electrolyte) technology is unable to function. Military applications would be as original equipment in military vehicles and portable field-use power sources for extreme environments. The larger commercial market, would include, e.g., laptops, cell phones or tablet computers for field use applications in extreme cold or hot. Potential extensions include hybrid and electric vehicles and recreational equipment. A recent, authoritative study estimates the Li ion battery market, using existing technology, at ca. $8b/year by 2015.
Agency: Department of Defense | Branch: Army | Program: SBIR | Phase: Phase II | Award Amount: 1.05M | Year: 2016
This work proposes further development of small, ruggedized, very lightweight, inexpensive, field-portable sensors for detection of multiple analytes in the environment. Unique modifications of voltammetric techniques allow fingerprint detection/discrimination of multiple analytes in presence of interferents. The sensors are 3-modular: Disposable sensor probe; Microcontroller; Control/display interface (Android phone or stand-alone touch-screen LCD, continuously-updatable firmware/software). In Phase I, detection, quantitation of multiple metals to < 5 ppb, munitions residues to < 7 ppb, and hydrocarbons to 1 ppb, was demonstrated in NIST soil, sediment and field water samples, with use of unique, environmentally-benign sensing electrodes fabricated for the first time. Sensing probes were reduced to 6x12x1 mm. In additional work done specifically for this proposal, detection of all analytes was demonstrated in water containing mud, humic acid, sump wastes. The Phase II work will: Demonstrate sensing of all analytes of interest simultaneously at even lower detection limits; optimize Microcontroller and data-processing software; fabricate complete field-use sensor toolkits with Android cellphone or stand-alone touch-screen LCD control/display interfaces; carry out extensive shelf-life, environmental durability tests; design small, semi-automated pilot plant. The work leverages this firms ongoing Army work in voltammetric electrochemical sensors for CW agents/TICs, with already-identified government customers and a commercial partner.
Agency: Department of Defense | Branch: Army | Program: SBIR | Phase: Phase I | Award Amount: 99.99K | Year: 2014
This work proposes ruggedized, microporous membrane-based sensors for detection of multiple inorganic and organic analytes in the environment based on a modification of voltammetric techniques. It leverages ongoing work at this firm for the Army in voltammetric electrochemical sensors for field sensing of CW agents based on unique membranes having microchip Controllers with Android cellphone control interfaces. Voltammetric techniques are sensitive techniques for detection, quantitation of multiple inorganic/organic analytes present together, in a laboratory setting. However, they are currently impractical/expensive for field use, requiring, e.g., specialized sampling cells, bulky potentiostats, and laptop control interfaces. Other techniques, e.g. AAS, ICP-AES and ICP-MS, are even less practical and more expensive. The proposed technology incorporates three modules: (1) A small, flexible, thin-film, field-rugged, throwaway sensor employing unique, Conducting-Polymer-functionalized, metalized microporous membranes, using both direct and modified-electrode sensing (for specific sensitivity). (2) A tiny (2 cm square), inexpensive (
Ashwin-Ushas Corp | Date: 2013-03-15
Variable-emittance, electrochromic devices utilizing IR-active conducting polymers and methods of preparing the same are disclosed.