SPECIAL NOTICE
99 -- TECHNOLOGY TRANSFER OPPORTUNITY: Built-in temperature sensing method in a microheater (TOP2-275)
- Notice Date
- 12/11/2020 2:00:55 PM
- Notice Type
- Special Notice
- NAICS
- 927110
— Space Research and Technology
- Contracting Office
- NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
- ZIP Code
- 00000
- Solicitation Number
- T2P-ARC-00065
- Response Due
- 12/11/2021 2:00:00 PM
- Archive Date
- 12/26/2021
- Point of Contact
- NASA�s Technology Transfer Program
- E-Mail Address
-
Agency-Patent-Licensing@mail.nasa.gov
(Agency-Patent-Licensing@mail.nasa.gov)
- Description
- NASA�s Technology Transfer Program solicits inquiries from companies interested in obtaining license rights to commercialize, manufacture and market the following technology. License rights may be issued on an exclusive or nonexclusive basis and may include specific fields of use. NASA provides no funding in conjunction with these potential licenses. THE TECHNOLOGY: NASA Ames Research Center has developed an innovative built-in temperature sensing method for microheaters. The temperature sensing of chip-based microheaters, is conventionally done with the aid of a separate sensor, which typically adds to the production cost and can cause inaccuracy. These have been widely used in many applications including gas sensors, flow meters, polymerese chain reaction chambers and the hot-stage in transmission electron microscopes, where accurate monitoring of temperature is critical. NASA has developed a novel resistor-based microheater which relies on a Joule heating mechanism. The resistance is dependent on the body temperature which means that the microheater has an inherent sensing mechanism and eliminates the need for embedded sensors. This technology is a cost effective temperature sensing method that harnesses an inherent mechanism to eliminate the need for embedded sensors. The physical structures of both the Joule heater and the thermistor are equivalent in principle, i.e., a resistor, which implies that the resistor pattern can offer dual functions of heating and temperature sensing simultaneously. However, two assumptions need to be confirmed in order to assure the dual functions. First, the parasitic power during the temperature sensing operation should not heat up or cool down the system. Second, the interrupt period for the temperature sampling should be sufficiently short so as to avoid temperature perturbations. It is found that an intermittent temperature sampling in the middle of the heating cycle does not disturb the body temperature if the temperature sampling voltage and pulse width are sufficiently low and short, respectively. The built-in temperature sensing is attributed to the electrical time constant being few orders of magnitude smaller than the thermal time constant. The temperature estimation results using the built-in method show excellent agreement with the benchmark measurements from an infrared pyrometer. Intermittent interruption for the temperature sampling is found to be allowable during the heating period as long as the sampling is made at very low voltages lasting short duration. The electrical time constant of the order of tens of picoseconds is nine orders of magnitude smaller than the thermal time constant in the order of tens of milliseconds. In addition, a clock frequency of 10 megahertz that is easily affordable since low cost electronics can sample pulses of 100 nanoseconds. This results in temperature sampling within six orders magnitude faster than the time required to drop 1degree Celsius. Therefore, this method enables own body temperature sensing at low cost with negligible self-heating and interruption of cooling effects. To express interest in this opportunity, please submit a license application through NASA�s Automated Technology Licensing Application System (ATLAS) by visiting https://technology.nasa.gov/patent/TOP2-275 If you have any questions, please e-mail NASA�s Technology Transfer Program at Agency-Patent-Licensing@mail.nasa.gov with the title of this Technology Transfer Opportunity as listed in this beta.SAM.gov notice and your preferred contact information. For more information about licensing other NASA-developed technologies, please visit the NASA Technology Transfer Portal at https://technology.nasa.gov/ These responses are provided to members of NASA�s Technology Transfer Program for the purpose of promoting public awareness of NASA-developed technology products, and conducting preliminary market research to determine public interest in and potential for future licensing opportunities. No follow-on procurement is expected to result from responses to this Notice.
- Web Link
-
SAM.gov Permalink
(https://beta.sam.gov/opp/c73341bb67f646e094b1e2b5aea04bd8/view)
- Record
- SN05872072-F 20201213/201211230139 (samdaily.us)
- Source
-
SAM.gov Link to This Notice
(may not be valid after Archive Date)
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