Measurement and prediction of the low level cut-off sensor response times

2000 ◽  
Author(s):  
Han Nguyen
Keyword(s):  
Response Times ◽  
Sensor Response ◽  
Low Level

Amperometric Gas Sensor Response Times

1998 ◽  
Vol 70 (5) ◽  
pp. 998-1006 ◽  
Author(s):  
P. Richard Warburton ◽  
Marcus P. Pagano ◽  
Robert Hoover ◽  
Michael Logman ◽  
Kurtis Crytzer ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Response Times ◽  
Sensor Response

Synthesis and H2S sensing performance of MoO3/Fe2(MoO4)3 yolk/shell nanostructures

RSC Advances ◽  
2015 ◽  
Vol 5 (47) ◽  
pp. 37703-37709 ◽  
Author(s):  
Xinming Gao ◽  
Chunyan Li ◽  
Zhuoxun Yin ◽  
Yujin Chen
Keyword(s):  
Gas Sensing ◽  
Response Times ◽  
Sensor Response ◽  
Shell Nanostructures ◽  
Sensing Performance

A facile method was developed to fabricate MoO3/Fe2(MoO4)3 yolk/shell nanostructures with small pores, exhibiting good H2S gas sensing performance including high sensor response, short recovery and response times, and good selectivity and stability.

scholarly journals Селективные сенсоры двуокиси азота на основе тонких пленок оксида вольфрама при воздействии оптического излучения

2019 ◽  
Vol 45 (20) ◽  
pp. 7
Author(s):  
А.В. Алмаев ◽  
Н.Н. Яковлев ◽  
Е.В. Черников ◽  
О.П. Толбанов
Keyword(s):  
Room Temperature ◽  
Response Times ◽  
Sensor Response ◽  
Maximum Intensity ◽  
Gas Mixture ◽  
Selective Detection ◽  
High Humidity ◽  
Near Surface ◽  
Order Of Magnitude ◽  
Reducing Gases

The possibility of selective detection of NO2 in the air starting with a concentration of 1 ppm by means of sensors based on thin films of Au/WO3:Au when replacing the heating by the irradiation of the diode with the wavelength of 400 nm of maximum intensity of radiation is shown. Activation of photodesorption by irradiation reduces the response times of sensors under the influence of NO2 by an order of magnitude. It was found that the effect of high humidity in the conditions of irradiation of sensors at room temperature leads to an increase in response to NO2, due to the appearance of additional adsorption centers. The lack of sensor response to reducing gases and the change in the oxygen concentration in the gas mixture is caused by photodesorption of chemisorbed O2- when interacting with holes that generated under exposure of irradiation in the near-surface area of WO3.

Postmasking Effects of Sensorineural Tinnitus

1984 ◽  
Vol 27 (3) ◽  
pp. 466-474 ◽  
Author(s):  
Richard S. Tyler ◽  
David Conrad-Armes ◽  
Pauline A. Smith
Keyword(s):  
Short Duration ◽  
Response Times ◽  
The Other ◽  
Silent Interval ◽  
Minimum Level ◽  
Preliminary Results ◽  
Low Level

In this study we provide some preliminary results of our attempt to measure the perception of tinnitus after the termination of a masker. The minimum level to mask tinnitus was determined for a 1-s masker in 10 subjects with sensorineural tinnitus. A continuous masker (parametrically varied in duration, frequency, and level) was then presented to the ear ipsilateral to the tinnitus. At the termination of the masker, subjects were required to press a button when their tinnitus "first returned" and a second button when it returned to "normal loudness." These response times were recorded automatically, and subjects reported what they heard after each trial. At low-level and short-duration maskers, the tinnitus typically was heard immediately after the masker termination. At higher levels and longer durations, different responses were observed. In two subjects, a silent interval was present after the masker, then the tinnitus returned at a softer loudness before returning to its premasker loudness. In one subject, the tinnitus was louder after the masker, and gradually returned to its premasker loudness. In another subject, the tinnitus returned immediately after the masker, but was softer than before. It then gradually increased to its premasker loudness. In the other two subjects, the tinnitus returned immediately to its normal loudness when the masker was terminated at all masker levels and durations. Higher level and longer duration maskers generally produced greater effects. Masker frequency, however, had little effect.

Comparing Transition-Edge Sensor Response Times in a Modified Contact Scheme with Different Support Beams

2014 ◽  
Vol 176 (3-4) ◽  
pp. 299-303 ◽  
Author(s):  
A. D. Beyer ◽  
M. E. Kenyon ◽  
B. Bumble ◽  
M. C. Runyan ◽  
P. E. Echternach ◽  
...  
Keyword(s):  
Response Times ◽  
Transition Edge Sensor ◽  
Sensor Response ◽  
Transition Edge

Kinetics of glucose delivery to subcutaneous tissue in rats measured with 0.3-mm amperometric microsensors

1995 ◽  
Vol 269 (1) ◽  
pp. E155-E161 ◽  
Author(s):  
C. P. Quinn ◽  
M. V. Pishko ◽  
D. W. Schmidtke ◽  
M. Ishikawa ◽  
J. G. Wagner ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Glucose Concentration ◽  
Response Times ◽  
Jugular Vein ◽  
Subcutaneous Tissue ◽  
Sensor Response ◽  
Amperometric Sensors ◽  
Maximum Current ◽  
The Times ◽  
Kinetics Of

The time between intravenous injection of a glucose bolus and the time the glucose concentration peaked in the subcutaneous tissue was measured in pentobarbital-anesthetized rats with implanted 290-microns-diameter amperometric sensors. Boluses of 100, 200, and 400 mg/kg body wt were injected. The glucose concentration in the jugular vein was monitored by frequent withdrawal and analysis of samples. The glucose concentration in the subcutaneous tissue was continuously monitored with the sensors. The times required for the subcutaneously implanted sensor to reach its maximum current, corrected for sensor response times, were 7.5 +/- 3.9, 9.8 +/- 5.5, and 10.0 +/- 4.4 min for the smallest to the largest dose, respectively. The shorter delay in response to the smallest dose was statistically significant (P < 0.03). The results were consistent with dilution of the bolus in the cardiovascular system and transport of glucose by both diffusion and facilitated transport via a saturable mediator. An understanding of the differences in the dynamics of venous vs. subcutaneous response to a glucose dose is important in developing algorithms for the control of blood glucose based on a subcutaneous measurement.

Nanostructure of semiconductor quantum dots in a borosilicate glass matrix by complementary use of HREM and AEM

1990 ◽  
Vol 48 (4) ◽  
pp. 728-729
Author(s):  
M.J. Kim ◽  
L.C. Liu ◽  
S.H. Risbud ◽  
R.W. Carpenter
Keyword(s):  
Quantum Dots ◽  
Borosilicate Glass ◽  
Glass Matrix ◽  
Optical Switching ◽  
Response Times ◽  
Fast Response ◽  
Processing Technique ◽  
Internal Stresses ◽  
Electron Hole ◽  
Spatial Dimensions

When the size of a semiconductor is reduced by an appropriate materials processing technique to a dimension less than about twice the radius of an exciton in the bulk crystal, the band like structure of the semiconductor gives way to discrete molecular orbital electronic states. Clusters of semiconductors in a size regime lower than 2R {where R is the exciton Bohr radius; e.g. 3 nm for CdS and 7.3 nm for CdTe) are called Quantum Dots (QD) because they confine optically excited electron- hole pairs (excitons) in all three spatial dimensions. Structures based on QD are of great interest because of fast response times and non-linearity in optical switching applications.In this paper we report the first HREM analysis of the size and structure of CdTe and CdS QD formed by precipitation from a modified borosilicate glass matrix. The glass melts were quenched by pouring on brass plates, and then annealed to relieve internal stresses. QD precipitate particles were formed during subsequent "striking" heat treatments above the glass crystallization temperature, which was determined by differential thermal analysis.

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