scholarly journals Performance of a MFS-based mosfet for low temperature applications

2005 ◽  
Vol 3 (01) ◽  
Author(s):  
P.J. Garcí­a-Ramí­rez ◽  
F. Sandoval-Ibarra
Keyword(s):  
Low Temperature ◽  
Magnetic Fields ◽  
Power Consumption ◽  
Wide Temperature Range ◽  
Carrier Mobility ◽  
Charge Carriers ◽  
Low Power Consumption ◽  
Current Line ◽  
Key Parameter ◽  
Very Low Temperature

A split-drain MAGFET has been designed for detecting magnetic fields at very low temperature. In this design a key parameter is the Hall angle, which indicates the current line deviation due to the Lorentz force acting on the charge carriers. It is well known that reducing the work temperature the carrier mobility increases, therefore an increase in carrier deflection is expected. As a consequence the split-drain MAGFET is able to detect magnetic fields below 1mT at 77K with low power consumption. Experimental results of a wide temperature range (20K< T

scholarly journals A Silicon Magnetic-Field Sensor: Low-Temperature Performance Evaluation

2007 ◽  
Vol 5 (03) ◽  
Author(s):  
P.J. Garcí­a-Ramí­rez ◽  
F. Sandoval-Ibarra ◽  
E.A. Gutiérrez-Domí­nguez
Keyword(s):  
Magnetic Field ◽  
Carrier Mobility ◽  
Liquid Nitrogen Temperature ◽  
Charge Carriers ◽  
Magnetic Field Sensor ◽  
Current Line ◽  
Magnetic Field Sensors ◽  
Temperature Performance ◽  
Field Sensor ◽  
Key Parameter

A Si magnetic field-sensitive split-drain MOSFET has been used to study and analyze the effects of a magnetic field on the charge carrier conduction at liquid-nitrogen temperature. In magnetic field sensors (MFS), a key parameter is the Hall angle, which indicates the current line deviation due to the Lorentz force acting on the charge carriers. If temperature is lowered, the carrier mobility increases, therefore, an increase in carrier deflection is expected. To understand the internal deflection of carriers, and optimize the design of a magnetic field sensor, a semi-analytic model has been developed. Using such a model, a MFS has been fabricated and tested. The first experimental results are presented in this work.

31P Nuclear Spin Dynamics in Metallic Si:P at Very Low Temperature and High Magnetic Fields

2009 ◽  
Vol 78 (7) ◽  
pp. 075003 ◽  
Author(s):  
Minki Jeong ◽  
Myeonghun Song ◽  
Tomohiro Ueno ◽  
Takao Mizusaki ◽  
Akira Matsubara ◽  
...  
Keyword(s):  
Low Temperature ◽  
Magnetic Fields ◽  
Nuclear Spin ◽  
Spin Dynamics ◽  
High Magnetic Fields ◽  
Very Low Temperature

The Capacitive Soil Moisture Sensor Research

2014 ◽  
Vol 584-586 ◽  
pp. 2142-2149
Author(s):  
Jin Shuai Qu ◽  
Jing Fan ◽  
Deng Chao Huang
Keyword(s):  
Soil Moisture ◽  
Low Temperature ◽  
Power Consumption ◽  
Low Power ◽  
Precision Agriculture ◽  
Low Power Consumption ◽  
Temperature Drift ◽  
Moisture Sensor ◽  
Soil Moisture Sensor ◽  
New Type

To meet the requirements of a large-scale soil moisture monitoring system, this dissertation developed a new type of capacitive soil moisture sensor based on the detection and amplification of the singal peak-to-peak value named PA-1 sensor. PA-1 sensor was calibrated and evaluated under static laboratory conditions. A new type of soil moisture sensor named PA-1 is developed, which is based on the relationship between soil moisture and soil relative permittivity. Circuit design, operating features and exterior design of the sensor are introduced. PA-1 is calibrated in solution samples using the standard calibration method. Calibration experiment results show that PA-1 has a very linear measurement curve. The performance of PA-1 is studied and compared to the widely used Decagon Company’s EC-5 capacitive soil moisture sensor. Experiment results show that PA-1 has advantages of high sensitivity, low temperature drift, strong tolerance to electromagnetic interference and low power consumption. Keywords: sensor, Precision Agriculture, low temperature drift, low power consumption.

A Low-Cost Portable Biological Drug Transport Box at Low Temperature

2014 ◽  
Vol 535 ◽  
pp. 209-212
Author(s):  
Qun Chao Yu ◽  
Kai Jin Qiu ◽  
Hong You
Keyword(s):  
Low Temperature ◽  
Power Consumption ◽  
Drug Transport ◽  
Lower Cost ◽  
Low Cost ◽  
Space Structure ◽  
Low Power Consumption ◽  
Biological Drug ◽  
New Type ◽  
Control Part

The paper introduces a new type of biological drug transport box combined with the advantages of both with a low power consumption and low price. It explains the design of the appearance and space structure of the system, air flow cooling structure, and the hardware and software structure in the control part. Experiment results indicate that the solution put forward in the paper is simple and reliable, that the constant temperature effect is good and that the whole quality ratio of the transport box is high at a lower cost.

scholarly journals A Low-Temperature Micro Hotplate Gas Sensor Based on AlN Ceramic for Effective Detection of Low Concentration NO2

Sensors ◽  
2019 ◽  
Vol 19 (17) ◽  
pp. 3719
Author(s):  
Wen-Jie Zhao ◽  
Dan Xu ◽  
Yin-Sheng Chen ◽  
Xuan Wang ◽  
Yun-Bo Shi
Keyword(s):  
Low Temperature ◽  
Power Consumption ◽  
Low Power ◽  
Gas Sensor ◽  
Simulation Analysis ◽  
Molar Ratio ◽  
Low Power Consumption ◽  
Sensitive Material ◽  
Thermal Isolation ◽  
Low Concentration

Air pollution is one of the major threats to human health. The monitoring of toxic NO2 gas in urban air emission pollution is becoming increasingly important. Thus, the development of an NO2 sensor with low power consumption, low cost, and high performance is urgent. In this paper, a planar structural micro hotplate gas sensor based on an AlN ceramic substrate with an annular Pt film heater was designed and prepared by micro-electro-mechanical system (MEMS) technology, in which Pt/Nb/In2O3 composite semiconductor oxide was used as the sensitive material with a molar ratio of In:Nb = 9:1. The annular thermal isolation groove was designed around the heater to reduce the power consumption and improve the thermal response rate. Furthermore, the finite element simulation analysis of the thermal isolation structure of the sensor was carried out by using ANSYS software. The results show that a low temperature of 94 °C, low power consumption of 150 mW, and low concentration detection of 1 to 10 ppm NO2 were simultaneously realized for the Nb-doped In2O3-based gas sensor. Our findings provide a promising strategy for the application of In2O3-based sensors in highly effective and low concentration NO2 detection.

Magnetic energy harvesting with magnetoelectrics: an emerging technology for self-powered autonomous systems

2017 ◽  
Vol 1 (10) ◽  
pp. 2039-2052 ◽  
Author(s):  
Venkateswarlu Annapureddy ◽  
Haribabu Palneedi ◽  
Geon-Tae Hwang ◽  
Mahesh Peddigari ◽  
Dae-Yong Jeong ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Magnetic Fields ◽  
Power Consumption ◽  
Low Power ◽  
Magnetic Energy ◽  
Autonomous Systems ◽  
Emerging Technology ◽  
Low Power Consumption ◽  
Weak Magnetic Fields ◽  
Self Powered

Energy harvesting from the weak magnetic fields based on the magneto-mechano-electric (MME) effect is quite promising for powering the low power consumption electronics.

Compositional Tuning of Negative Differential Resistance in Bulk Silver Iodide Memristor

2020 ◽  
Author(s):  
SMITA GAJANAN NAIK ◽  
Mohammad Hussain Kasim Rabinal
Keyword(s):  
Power Consumption ◽  
Negative Differential Resistance ◽  
Silver Iodide ◽  
Differential Resistance ◽  
Fast Response ◽  
Low Power Consumption ◽  
Switching Effect ◽  
Memory Switching ◽  
Bulk Silver ◽  
Emerging Memory

Electrical memory switching effect has received a great interest to develop emerging memory technology such as memristors. The high density, fast response, multi-bit storage and low power consumption are their...

RESISTIVITY OF TmSe UNDER PRESSURE AT VERY LOW TEMPERATURE

1980 ◽  
Vol 41 (C5) ◽  
pp. C5-177-C5-180
Author(s):  
J. Flouquet ◽  
P. Haen ◽  
F. Holtzberg ◽  
F. Lapierre ◽  
J. M. Mignot ◽  
...  
Keyword(s):  
Low Temperature ◽  
Very Low Temperature
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