Low Power Data Conversion for Sensing Applications

2004 ◽  
pp. 351-360
Author(s):  
Terri S. Fiez ◽  
Ravi Naiknaware ◽  
Ruoxin Jiang
Keyword(s):  
Low Power ◽  
Data Conversion ◽  
Sensing Applications

scholarly journals Optimization of a Low-Power Chemoresistive Gas Sensor: Predictive Thermal Modelling and Mechanical Failure Analysis

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 783 ◽  
Author(s):  
Andrea Gaiardo ◽  
David Novel ◽  
Elia Scattolo ◽  
Michele Crivellari ◽  
Antonino Picciotto ◽  
...  
Keyword(s):  
Low Power ◽  
Failure Analysis ◽  
Gas Sensors ◽  
High Performance ◽  
Gas Sensing ◽  
Mechanical Failure ◽  
Sensing Applications ◽  
Theoretical Approaches ◽  
Sensing Material ◽  
Silicon Bulk

The substrate plays a key role in chemoresistive gas sensors. It acts as mechanical support for the sensing material, hosts the heating element and, also, aids the sensing material in signal transduction. In recent years, a significant improvement in the substrate production process has been achieved, thanks to the advances in micro- and nanofabrication for micro-electro-mechanical system (MEMS) technologies. In addition, the use of innovative materials and smaller low-power consumption silicon microheaters led to the development of high-performance gas sensors. Various heater layouts were investigated to optimize the temperature distribution on the membrane, and a suspended membrane configuration was exploited to avoid heat loss by conduction through the silicon bulk. However, there is a lack of comprehensive studies focused on predictive models for the optimization of the thermal and mechanical properties of a microheater. In this work, three microheater layouts in three membrane sizes were developed using the microfabrication process. The performance of these devices was evaluated to predict their thermal and mechanical behaviors by using both experimental and theoretical approaches. Finally, a statistical method was employed to cross-correlate the thermal predictive model and the mechanical failure analysis, aiming at microheater design optimization for gas-sensing applications.

Analysis of rectifier circuits for low power and sensing applications

2011 ◽  
Author(s):  
Imran M. Khan ◽  
Sheroz Khan ◽  
Ahm Zahirul Alam ◽  
Othman O. Khalifa
Keyword(s):  
Low Power ◽  
Sensing Applications ◽  
Rectifier Circuits

Compact Low-Power Analog-to-Digital Converters using Multi-State Spatial Wavefunction-Switched (SWS) FETs

2014 ◽  
Vol 23 (01n02) ◽  
pp. 1450005
Author(s):  
Murali Lingalugari ◽  
John Chandy ◽  
Faquir Jain ◽  
El-Sayed Hasaneen ◽  
Evan Heller
Keyword(s):  
Low Power ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Analog To Digital Converters ◽  
Data Conversion ◽  
Low Power Consumption ◽  
Quantum Mechanical ◽  
Multiple Quantum ◽  
Analog To Digital ◽  
Electron Wavefunction

In this paper, we propose a new architecture for analog-to-digital converters (ADCs) using multistate spatial wavefunction-switched field-effect transistors (SWSFETs). SWSFETs are multiple quantum coupled well devices, where the wells are stacked vertically and the electron wavefunction switches from one well to another with the change in gate voltage. Quantum mechanical simulations of 3-well InGaAs-AlInAs SWSFET structures are presented. The designs and simulations of 2-bit and 3-bit ADCs using SWSFETs result in low power consumption and reduced device count which improves the speed of the data conversion.

A 5.42nW/kB retention power logic-compatible embedded DRAM with 2T dual-Vt gain cell for low power sensing applications

2010 ◽  
Author(s):  
Yoonmyung Lee ◽  
Mao-Ter Chen ◽  
Junsun Park ◽  
Dennis Sylvester ◽  
David Blaauw
Keyword(s):  
Low Power ◽  
Sensing Applications

Electro Thermal Effects of Geometrically Modified MEMS-Based Micro Heater for Gas Sensing Applications

2019 ◽  
Vol 17 (9) ◽  
pp. 725-732
Author(s):  
Vishal Balasubramanian ◽  
V. S. Selvakumar ◽  
L. Sujatha ◽  
M. Revathi ◽  
C. V. Gayathri
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Gas Sensing ◽  
Comsol Multiphysics ◽  
Low Power Consumption ◽  
Temperature Uniformity ◽  
Gas Sensitivity ◽  
Average Temperature ◽  
Sensing Applications ◽  
Sensitivity And Selectivity

Micro heaters play a major role in gas sensing applications owing to their accuracy, selectivity and low power consumption. The proposed micro heater employs a window type polysilicon micro-hotplate structure, which is a square cell of side 500 μm, designed using COMSOL Multiphysics. It is highly imperative that an evenly distributed temperature is necessary over the broad area of the heater in order to improve its gas sensitivity and selectivity. In this paper, we have explained the design and analysis of a novel window-type micro heater made of polysilicon. The main aim of the work is to achieve temperature uniformity and low power consumption. By optimizing the geometry of the micro heater, we can obtain both temperature uniformity and low power consumption. This geometrical optimization also improves the sensitivity and response time of the sensor. To support them, we have carried out simulations using COMSOL Multiphysics. The proposed structure has obtained a uniform temperature of 1134.1 K and an average temperature of 1130.39 K. Such high and uniform temperatures finds applications in gas sensors. This work also analyzes the proper choice and placement of electrodes across the geometry of the heater.

Hardware Specialization in Low-power Sensing Applications to Address Energy and Resilience

2014 ◽  
Vol 78 (1) ◽  
pp. 49-62 ◽  
Author(s):  
Zhuo Wang ◽  
Kyong Ho Lee ◽  
Naveen Verma
Keyword(s):  
Low Power ◽  
Sensing Applications
Sign in / Sign up

Export Citation Format

Share Document