Journal ArticleDOI
Development of temperature feedback control system for piezo-actuated display package
Jae Choon Kim,Jin Taek Chung,Dongjin Lee,Yong Kook Kim,Jin Woo Kim,Sungwoo Hwang,Byeong Kwon Ju,Sang Kyeong Yun,Heung Woo Park +8 more
TLDR
In this article, a temperature management system for a deformable mirrors of piezo-actuated display package (PADP) is described, where a temperature control system using a microheater and a temperature feedback circuit is developed.Abstract:
This paper describes a temperature management system for a deformable mirrors of piezo-actuated display package (PADP). This package which is integrated in microbeam projectors is used in portable devices such as cellphones, laptops, and personal digital assistants (PDAs), to name a few. Ambient temperature change is a critical factor affecting the performance of PADP. To reduce this effect of ambient temperature change, a temperature control system using a microheater and a temperature feedback circuit is developed. A computational model of the transient thermal analysis for the feedback control system is also developed. The obtained theoretical results are in a good agreement with the experimental measurements. Under this controlled system, the magnitude of the temperature fluctuation is reduced by ±0.5 °C. In order to enhance the performance of the developed system, various values of the temperature sensor resistance are used, leading to a reduction of about 10% of the temperature fluctuation.read more
Citations
More filters
Journal ArticleDOI
Effects of operating temperature on droplet casting of flexible polymer/multi-walled carbon nanotube composite gas sensors
TL;DR: The results indicated that the higher operating temperature could reduce the response and influence the sensitivity of the polymer/MWCNT gas sensor array.
Journal ArticleDOI
Performance improvement of square microhotplate with insulation layer and heater geometry
Gaurav Saxena,Roy Paily +1 more
TL;DR: In this article, the authors investigated four different heater geometries viz. Meander, S-shape, Double-Meander and Double-Spiral for their inherent thermal uniformity.
Proceedings ArticleDOI
Simulation study of power loss components in a microheater
Gaurav Saxena,Roy Paily +1 more
TL;DR: In this paper, the authors identified the individual components of heat loss mechanisms and their region of dominance with respect to the temperature spectrum and showed that the nitride layer, which is used for providing the electrical insulation has resulted in an additional 56:6% of power demand for a heater operating at 620K.
Journal ArticleDOI
Choice of insulation materials and its effect on the performance of square microhotplate
Gaurav Saxena,Roy Paily +1 more
TL;DR: In this article, two insulation layer material, silicon nitride and silicon carbide, are investigated to find the optimum dimension of insulation layer, required for a targeted uniformity of 0.22 K/μm, a value comparable to the reported literature.
Proceedings ArticleDOI
Effect of membrane to heater ratio on the performance of square microhotplate
Gaurav Saxena,Roy Paily +1 more
TL;DR: In this article, the effect of MHR on the performance of square microhotplates is systematically analyzed and the tradeoffs that exist among them are identified, and a study of such tradeoffs between performance parameters are crucial in deciding the MHR of a square membrane.
References
More filters
Book
CRC Handbook of Chemistry and Physics
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
Book
Introduction to microelectronic fabrication
TL;DR: An overview of microelectronic fabrication can be found in this paper, where the authors provide a historical perspective on the development and evolution of many of the technologies used in the fabrication process.
Journal ArticleDOI
Micromachined metal oxide gas sensors: opportunities to improve sensor performance
TL;DR: In this article, a review of the design principles and technology involved in the fabrication of micromachined substrates examining thermal and mechanical aspects is presented, and various ways for extracting the information are presented with respect to the improvement of sensor performance brought by this new approach.