KWJ Engineering, Inc. | Date: 2013-04-23
A universal microelectromechanical (MEMS) nano-sensor platform having a substrate and conductive layer deposited in a pattern on the surface to make several devices at the same time, a patterned insulation layer, wherein the insulation layer is configured to expose one or more portions of the conductive layer, and one or more functionalization layers deposited on the exposed portions of the conductive layer to make multiple sensing capability on a single MEMS fabricated device. The functionalization layers are adapted to provide one or more transducer sensor classes selected from the group consisting of: radiant, electrochemical, electronic, mechanical, magnetic, and thermal sensors for chemical and physical variables and producing more than one type of sensor for one or more significant parameters that need to be monitored.
Agency: Department of Health and Human Services | Branch: National Institutes of Health | Program: SBIR | Phase: Phase II | Award Amount: 999.22K | Year: 2015
DESCRIPTION provided by applicant The overall goal of this SBIR Phase II program is to continue development and commercialization of a new class of gas sensor under development by KWJ Engineering Inc KWJ to ozone monitoring and the implementation of a new home ozone alarm based on this technology This Phase I program is directly related to the mission of NIEHS as it aims to reduce of the burden of human disease and dysfunction arising from environmental causes by providing a reliable means for at risk populations to be aware of unhealthy ozone conditions in their homes We will demonstrate the application of this new gas sensor a very small ultralow power high reliability printed electrochemical sensor for development of a home ozone O alarm for individuals with respiratory diseases and all those concerned about their exposure to ozone This alarm will help those with respiratory conditions to manage their health by alerting them to ozone conditions that may exacerbate respiratory problems or pose danger to life and health Over million people in the United States live in areas of nonattainment of the EPA hour ozone standard The potential for development of asthma and other respiratory conditions as well as aggravation of existing respiratory conditions among at risk groups including the elderly and children in such high ground level ozone areas calls for a practical home ozone monitor similar to the carbon monoxide monitors that are now commonplace in the home KWJandapos s new class of amperometric gas sensor the screen printed electrochemical sensor SPEC will deliver high performance gas sensing for a wide range of applications at commodity level prices These devices which are about the size of a dime are able to use a variety of conventional and developmental electrolytes This provides unprecedented access to a wide range of tunable selectivity sensitivity and robustness to environmental conditions compared to conventional sensors The Phase I program involved fabrication and testing of SPEC devices with demonstration that new electrodes and electrolytes could be used to produce sensor with better sensitivity detection limit stability and reliability that current commercial sensors These sensors were validated vs standard UV spectrometric ozone measurement and demonstrated successfully as the transducer for actuation of a home ozone alarm demonstration with ozone concentrations relevant to health concerns to ppb Phase II will complete development of the sensor particularly its rational design based on the electrolytes and catalysts and will produce prototype ozone alarm units to be tested and validated with our industrial partners PUBLIC HEALTH RELEVANCE Development of new next generation high performance low cost gas sensing technologies for ozone will make gas sensing more widely available for health and safety protection The proposed program will provide a new powerful printed gas sensor format with demonstrated improved performance and reliability compared to currently available commercial ozone sensors These sensors will form the heart of a home ozone alarm with high reliability to help protect the health of people with respiratory conditions living in high ground level ozone areas
Agency: Department of Defense | Branch: Army | Program: SBIR | Phase: Phase II | Award Amount: 999.16K | Year: 2012
This proposal addresses the Army"s requirements outlined in the solicitation for an efficient and portable water decontamination technology to achieve optimum water re-use for field operations by reducing contaminant levels in the wash, rinse and discharge streams of the mobile kitchen sanitation center. An effective approach is the use of ozone, a powerful oxidizing gas capable of broadly neutralizing harmful species in gaseous and aqueous forms. In particular, microplasma-based ozone generation technology can be adapted for portable water-purification and the removal of toxic contaminants. Microplasmas are attractive due to the high reactivity of the excited species. The primary components of the proposed system are a microplasma ozone generator and a multichannel gas-liquid micro-reactor for ozonolysis. The microplasma ozone generator has the potential for high conversion rates of air to ozone and the micro-reactor offers high mass transfer and reactivity for decontamination of wastewater with low power consumption in a compact and easily scalable modular design. The Phase I effort has demonstrated the effectiveness of ozone to provide the highly efficient and adaptable decontamination technology required by the Army and this proposal illustrates a roadmap for further development of the integrated system for a comprehensive solution for the Army"s needs.
Agency: Department of Health and Human Services | Branch: National Institutes of Health | Program: STTR | Phase: Phase I | Award Amount: 149.98K | Year: 2015
DESCRIPTION provided by applicant The goal of this STTR Phase I collaboration between KWJ Engineering KWJ and North Carolina State University NCSU will be development of a unique autonomously powered wearable environmental gas sensor for personal exposure monitoring PEM The approach will be to integrate KWJ ultralow power high performance printed amperometric gas sensor for key atmospheric pollutants including carbon monoxide CO ozone O and nitrogen dioxide NO with thermoelectric power harvesting technology under development at NCSU This integration will provide a new tool for personal and personalized exposure assessment This program addresses the NIEHS mission to discover how the environment affects people in order to promote healthier lives and specifically the identified need for tools for improved exposure assessment The wearable sensors with on board power harvesting will derive all required power from body heat via a small thermoelectric generator TEG and associated electronic components incorporated into a lightweight unobtrusive wearable system Very small lightweight unobtrusive monitoring systems will broaden the conditions under which exposure studies can be performed and will remove the need for awkward bulky or inconvenient sampling collection devices and batteries This system will expand the scope of PEM studies and provide increased capability to produce personalized data from mobile individuals thus improving the ability of federal agencies to protect human health and well being relative to environmental inhalation hazards KWJandapos s new class of amperometric gas sensor the screen printed electrochemical sensor SPEC promises to deliver high performance gas sensing for a wide range of applications at commodity level prices These devices which are about the size of a micro SD cell phone card use a variety of conventional and developmental electrolytes tuned for specific tasks as well as novel detection electrode catalysts This provides unprecedented access to a wide range of tunable selectivity sensitivity and robustness to environmental conditions compared to conventional amperometric gas sensors This is a new cost competitive high performance technology that bridges the cost performance gap for gas measurement applications The Phase I program will involve fabrication and testing of SPEC devices using components down selected for effective sensing of the target gases at relevant environmental levels These components will then be integrated into a demonstration using thermoelectric power sources in a body worn system Additional target gases and particulates criteria pollutants are envisions as add ons to the system in Phase II PUBLIC HEALTH RELEVANCE A new next generation personal exposure monitoring technology based on ultralow power high performance gas sensors and thermoelectric self powered operation by body heat energy harvesting will be developed The wearable system will provide new capabilities for personal exposure assessment of toxic atmospheric pollutants and will provide a new route to personalized exposure monitoring for the improvement of health
KWJ Engineering, Inc. | Date: 2014-06-27
A printed gas sensor is disclosed. The sensor may include a partially porous substrate, an electrode layer, an electrolyte layer, and an encapsulation layer. The electrode layer comprises one or more electrodes that are formed on one side of the porous substrate. The electrolyte layer is in electrolytic contact with the one or more electrodes. The encapsulation layer encapsulates the electrode layer and electrolyte layer thereby forming an integrated structure with the partially porous substrate.