Results 21 to 30 of about 8,912,797 (389)

Fully Integrated Photoacoustic NO2 Sensor for Sub-ppb Level Measurement

open access: yesSensors, 2020
A fully integrated photoacoustic nitrogen dioxide (NO2) sensor is developed and demonstrated. In this sensor, an embedded photoacoustic cell was manufactured by using an up-to-date 3D printing technique.
Yang Dong   +5 more
doaj   +1 more source

Experimental Quantum Target Detection Approaching the Fundamental Helstrom Limit [PDF]

open access: yesPhys. Rev. Lett. 127, 040504 (2021), 2021
Quantum target detection is an emerging application that utilizes entanglement to enhance the sensing of the presence of an object. Although several experimental demonstrations for certain situations have been reported recently, the single-shot detection limit imposed by the Helstrom limit has not been reached because of the unknown optimum ...
arxiv   +1 more source

Detecting deception: the scope and limits [PDF]

open access: yesTrends in Cognitive Sciences, 2008
With the increasing interest in the neuroimaging of deception and its commercial application, there is a need to pay more attention to methodology. The weakness of studying deception in an experimental setting has been discussed intensively for over half a century.
Chris D. Frith   +5 more
openaire   +2 more sources

Cr-MOF-Based Electrochemical Sensor for the Detection of P-Nitrophenol

open access: yesBiosensors, 2022
Cr-MOF nanoparticles were synthesized by a simple hydrothermal method, and their morphology and structure were characterized by SEM, TEM, and XRD techniques.
Chao Hu   +3 more
doaj   +1 more source

Capacity limits in face detection [PDF]

open access: yesCognition, 2022
Face detection is a prerequisite for further face processing, such as extracting identity or semantic information. Those later processes appear to be subject to strict capacity limits, but the location of the bottleneck is unclear. In particular, it is not known whether the bottleneck occurs before or after face detection.
Qarooni, Rana   +3 more
openaire   +2 more sources

A modified TCAD simulation model for a-InGaZnO based ISFETs on GaAs substrate for pH sensing applications

open access: yesMaterials Research Express, 2021
In this paper, an ISFET model is established and its accuracy is verified. The model can overcome the limitation of TCAD of not supporting electrolyte solution simulation.
Hui Wang, Naiyun Tang
doaj   +1 more source

Stochastic Time Response and Ultimate Noise Performance of Adsorption-Based Microfluidic Biosensors

open access: yesBiosensors, 2021
In order to improve the interpretation of measurement results and to achieve the optimal performance of microfluidic biosensors, advanced mathematical models of their time response and noise are needed. The random nature of adsorption–desorption and mass
Ivana Jokić   +5 more
doaj   +1 more source

How Low Can It Go? ATR-FTIR Characterization of Compounds Isolated from Ginger at the Nanogram Level

open access: yesEngineering Proceedings, 2023
This proof-of-concept study demonstrated the potential of attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy for the structural characterization of natural products when only very small quantities of the target compound are ...
Joel B. Johnson   +3 more
doaj   +1 more source

Single-Atom Cobalt-Based Electrochemical Biomimetic Uric Acid Sensor with Wide Linear Range and Ultralow Detection Limit

open access: yesNano-Micro Letters, 2020
A single-atom catalyst of A–Co–NG is explored for electrochemical uric acid (UA) detection for the first time and realize practical UA monitoring in serum samples.
Fangxin Hu   +9 more
semanticscholar   +1 more source

Effect of UV Scattering on Detection Limit of SO2 Cameras

open access: yesRemote Sensing, 2023
SO2 ultraviolet (UV) camera technology has been successfully applied to the accurate imaging detection of pollutant gas concentration; however, the actual detection ability of this technology has not been intensively studied, especially the detection ...
Kuijun Wu   +6 more
doaj   +1 more source

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