Ultrasensitive and low detection limit of acetone gas sensor based on ZnO/SnO2 thick films
RSC Advances, 2020 In this study, we synthesized ZnO/SnO2 hybrid sensing nanostructures by a sol–gel method. The structures, composition and morphologies of the synthesized products were thoroughly studied by X-ray diffraction (XRD), field-emission electron scanning ...
Yanping Chen, Yue Cao
semanticscholar +1 more source
Yankuang ceshi, 2018 Carbon and nitrogen isotopes are essential tools to study paleoclimate, palaeoenvironment, and ecosystem. At present, carbon and nitrogen isotopes are commonly determined by Elemental Analyzer-Isotope Ratio Mass Spectrometer (EA-IRMS).
XU Li +4 more
doaj +1 more source
Detection of amplitude modulation with squeezed light for sensitivity beyond the shot-noise limit [PDF]
, 1988 An improvement in precision beyond the limit set by the vacuum-state or zero-point fluctuations of the electromagnetic field is reported for the detection of amplitude modulation encoded on a weak signal beam. The improvement is achieved by employing the
Kimble, H. J., Wu, Ling-An, Xiao, Min
core +1 more source
A Reduced GO-Graphene Hybrid Gas Sensor for Ultra-Low Concentration Ammonia Detection
Sensors, 2018 A hybrid structure gas sensor of reduced graphene oxide (RGO) decorated graphene (RGO-Gr) is designed for ultra-low concentration ammonia detection. The resistance value of the RGO-Gr hybrid is the indicator of the ammonia concentration and controlled by
Chang Wang +7 more
doaj +1 more source
How Low Can It Go? ATR-FTIR Characterization of Compounds Isolated from Ginger at the Nanogram Level
Engineering 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
Stochastic Time Response and Ultimate Noise Performance of Adsorption-Based Microfluidic Biosensors
Biosensors, 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
Comparing the fundamental limit of detection for interferometric and resonant biosensors with coherent phase read-out [PDF]
, 2019 We compare the limit of detection of coherently interrograted photonic biosensors, using both interferometric and resonant architectures.Universidad de Málaga.
Halir, Robert +4 more
core +1 more source
Calibration of a single atom detector for atomic micro chips [PDF]
, 2007 We experimentally investigate a scheme for detecting single atoms magnetically trapped on an atom chip. The detector is based on the photoionization of atoms and the subsequent detection of the generated ions.
A. Günther +11 more
core +2 more sources
Cr-MOF-Based Electrochemical Sensor for the Detection of P-Nitrophenol
Biosensors, 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
Sub-shot-noise shadow sensing with quantum correlations [PDF]
, 2017 The quantised nature of the electromagnetic field sets the classical limit to the sensitivity of position measurements. However, techniques based on the properties of quantum states can be exploited to accurately measure the relative displacement of a ...
Edgar, Matthew P. +5 more
core +1 more source