Results 1 to 10 of about 6,196,296 (298)

High-Sensitivity Air-Coupled Ultrasonic Transducer Design Based on PMN-PT Bending Vibration Modes [PDF]

open access: yesSensors
Gas pipelines are a critical means of transportation in industrial production. To detect gas pipeline leaks, ultrasonic transducers with specific center frequencies and high sensitivity are required.
Junwen Deng   +5 more
doaj   +2 more sources

Assessment of Mixed Tin-Lead Perovskite as the Absorber Material for Fabrication of Highly Sensitive Broadband Photodetector [PDF]

open access: yesJournal of Optoelectronical Nanostructures, 2022
The relatively large bandgaps of the methylammonium lead halide perovskites are the major obstacle to achieving broadband response in the lead-based perovskite photodetectors.
Kosar Jafarizade   +2 more
doaj   +1 more source

An Automated and Highly Sensitive Chemiluminescence Immunoassay for Diagnosing Mushroom Poisoning

open access: yesFrontiers in Chemistry, 2021
Mushrooms containing Amanita peptide toxins are the major cause of mushroom poisoning, and lead to approximately 90% of deaths. Phallotoxins are the fastest toxin causing poisoning among Amanita peptide toxins.
Jianyu Zhu   +8 more
doaj   +1 more source

High-Sensitivity Refractive Index Sensor Based on a Cascaded Core-Offset and Macrobending Single-Mode Fiber Interferometer

open access: yesFrontiers in Materials, 2021
A high-sensitivity Mach–Zehnder interferometer (MZI) based on the cascaded core-offset and macrobending fiber structure is proposed for refractive index (RI) measurement.
Chuanxin Teng   +6 more
doaj   +1 more source

Characterization of Monoclonal Antibodies Recognizing Citrulline-Modified Residues

open access: yesFrontiers in Immunology, 2022
BackgroundCitrullination is a post-translational protein modification linked to the occurrence and development of a variety of diseases. The detection of citrullinated proteins is predominately based on antibody detection although currently available ...
Yaqiong Chen   +9 more
doaj   +1 more source

A Seawater Salinity Sensor Based on Optimized Long Period Fiber Grating in the Dispersion Turning Point

open access: yesSensors, 2023
Variations of seawater salinity often cause ocean internal waves, water masses and stratification, which affect the stability of the ocean environment.
Chao Du   +8 more
doaj   +1 more source

Cross-Polarization Optical Coherence Tomography for Brain Tumor Imaging

open access: yesFrontiers in Oncology, 2019
This paper considers valuable visual assessment criteria for distinguishing between tumorous and non-tumorous tissues, intraoperatively, using cross-polarization OCT (CP OCT)—OCT with a functional extension, that enables detection of the polarization ...
Konstantin S. Yashin   +11 more
doaj   +1 more source

High-sensitivity two-photon absorption microcavity autocorrelator [PDF]

open access: yes, 2004
A GaAs-AlAs microcavity device has been used as a photodetector in an autocorrelator for measuring the temporal pulsewidth of 1.5-/spl mu/m optical pulses.
Barry, Liam P.   +7 more
core   +3 more sources

Epitaxial Graphene Sensors Combined with 3D Printed Microfluidic Chip for Heavy Metals Detection

open access: yesProceedings, 2018
Two-dimensional materials may constitute key elements in the development of a sensing platform where extremely high sensitivity is required, since even minimal chemical interaction can generate appreciable changes in the electronic state of the material.
Maria Francesca Santangelo   +5 more
doaj   +1 more source

A High Sensitivity 20-MHz Endoscopic Transducer With Integrated Miniature Amplifier

open access: yesIEEE Access, 2020
Endoscopic transducer with small size and high frequency has been widely studied and applied in medical ultrasound imaging. However, attenuation affects high frequency ultrasound waves to a greater degree than lower frequency waves, which results in ...
Zhile Han   +6 more
doaj   +1 more source

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