Results 21 to 30 of about 6,196,296 (298)

A Designed Twist Sensor Based on the SPR Effect in the Thin-Gold-Film-Coated Helical Microstructured Optical Fibers

open access: yesSensors, 2022
The traditional optical fiber-based twist sensing has the disadvantage of low sensitivity and difficulty of distinguishing the twist direction. Moreover, chiral isomerism may lead to sensing errors.
Mengwei Zhang   +4 more
doaj   +1 more source

Hot climates, high sensitivity [PDF]

open access: yesProceedings of the National Academy of Sciences, 2013
Climate sensitivity is the Holy Grail of climate science; because CO2 is one of the principal control knobs for climate, sensitivity to changes in atmospheric CO2 concentration is of particular interest. This sensitivity is typically characterized by the change in global mean temperature per doubling of concentration.
openaire   +2 more sources

Stirring the Embers: High Sensitivity VLBI Observations of GRB030329 [PDF]

open access: yes, 2007
We present high sensitivity Very Long Baseline Interferometry (VLBI) observations 806 days after the gamma-ray burst of 2003 March 29 (GRB030329). The angular diameter of the radio afterglow is measured to be 0.347 +- 0.09 mas, corresponding to 0.99 +- 0.
/KIPAC, Menlo Park   +6 more
core   +3 more sources

High-sensitivity microfluidic calorimeters for biological and chemical applications [PDF]

open access: yes, 2009
High-sensitivity microfluidic calorimeters raise the prospect of achieving high-throughput biochemical measurements with minimal sample consumption. However, it has been challenging to realize microchip-based calorimeters possessing both high sensitivity
B. W. Axelrod   +13 more
core   +3 more sources

Nano-Cracked Strain Sensor with High Sensitivity and Linearity by Controlling the Crack Arrangement

open access: yesSensors, 2019
Studies on wearable sensors that monitor various movements by attaching them to a body have received considerable attention. Crack-based strain sensors are more sensitive than other sensors.
Hyunsuk Jung   +5 more
doaj   +1 more source

A Novel Integrated APCI and MPT Ionization Technique as Online Sensor for Trace Pesticides Detection

open access: yesSensors, 2022
The misuse of pesticides poses a tremendous threat to human health. Excessive pesticide residues have been shown to cause many diseases. Many sensor detection methods have been developed, but most of them suffer from problems such as slow detection speed
Gaosheng Zhao   +2 more
doaj   +1 more source

Mirror quiescence and high-sensitivity position measurements with feedback [PDF]

open access: yes, 2001
We present a detailed study of how phase-sensitive feedback schemes can be used to improve the performance of optomechanical devices. Considering the case of a cavity mode coupled to an oscillating mirror by the radiation pressure, we show how feedback ...
A. Abramovici   +49 more
core   +2 more sources

Mercury Ion Chemosensor Derived from Barbiturate Acid with Aggregation-Induced Emission Effect

open access: yesChemosensors, 2022
The detection of toxic metals is indispensable for water safety. In this paper, a small molecule of aggregation-induced emission (AIE) with barbiturate group was synthesized.
Xuezu Guo   +4 more
doaj   +1 more source

New application of superconductors: high sensitivity cryogenic light detectors [PDF]

open access: yes, 2016
In this paper we describe the current status of the CALDER project, which is developing ultra-sensitive light detectors based on superconductors for cryogenic applications.
Bellini, F.   +12 more
core   +5 more sources

Design and Optimization of Interdigital Capacitive Humidity Sensor with Highly Sensitive and Dynamic Response Time

open access: yesApplied Sciences, 2022
Humidity sensors are widely used in various fields of life. In meteorological detection, the sensor must have high sensitivity and fast dynamic response time due to extreme environmental interference.
Dapeng Li   +6 more
doaj   +1 more source

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