Considering the severe hazards of abnormal concentration level of HS as an extremely toxic gas to the human body and due to the disability of olfactory system in sensing toxic level of HS concentration, a reliable, sensitive, selective and rapid method for the detection of HS is proposed and its efficacy is analyzed through simulation. The proposed system is based on the deflection of a laser beam in response to the temperature variations in its path. In order to provide selectivity and improve sensitivity, gold nanostructures were employed in the system. The selectivity was introduced based on the thiol-gold interactions and the sensitivity of the system was enhanced due to the modification of plasmon resonance behavior of gold nanostructures in response to gas adsorption. Results from our analysis demonstrate that compared with Au and SiO-Au, the Au nanomatryoshka structures (Au-SiO-Au) showed the highest sensitivity due to promoting higher deflections of the laser beam.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9499935 | PMC |
| http://dx.doi.org/10.1038/s41598-022-19739-8 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Correlation of Anterior Segment Optical Coherence Tomography and Slit-Lamp Imaging in Infectious Keratitis.
Cornea
January 2025
Academic Ophthalmology, School of Medicine, AU1, University of Nottingham, Nottingham, United Kingdom.
Purpose: Anterior segment optical coherence tomography (AS-OCT) is increasingly being used to complement slit-lamp biomicroscopy in the evaluation of corneal infections. Our purpose was to analyze, compare, and correlate the clinical signs elicited by these 2 methods in patients with infectious keratitis (IK).
Methods: Slit-lamp photomicrographs (diffuse and slit beam) and AS-OCT scans were obtained from 20 consecutive patients (21 eyes) with IK.
Reliable Atom Probe Tomography of Cu Nanoparticles Through Tailored Encapsulation by an Electrodeposited Film.
Nanomaterials (Basel)
December 2024
Department of Materials Science, Montanuniversität Leoben, 8700 Leoben, Austria.
Nanoparticles are essential for energy storage, catalysis, and medical applications, emphasizing their accurate chemical characterization. However, atom probe tomography (APT) of nanoparticles sandwiched at the interface between an encapsulating film and a substrate poses difficulties. Poor adhesion at the film-substrate interface can cause specimen fracture during APT, while impurities may introduce additional peaks in the mass spectra.
View Article and Find Full Text PDFFrequency-domain thermoreflectance with beam offset without the spot distortion for accurate thermal conductivity measurement of anisotropic materials.
Rev Sci Instrum
January 2025
Department of Micro Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigaku-Katsura C3, Nishikyo-ku, Kyoto 615-8540, Japan.
The measurement of thermal conductivities of anisotropic materials and atomically thin films is pivotal for the thermal design of next-generation electronic devices. Frequency-domain thermoreflectance (FDTR) is a pump-probe technique that is known for its accurate and straightforward approach to determining thermal conductivity and stands out as one of the most effective methodologies. Existing research has focused on advancing a measurement system that incorporates beam-offset FDTR.
View Article and Find Full Text PDFActive alignment control system for thin disk regenerative amplifier.
Rev Sci Instrum
January 2025
HiLASE Centre, Institute of Physics of the Czech Academy of Sciences, Za Radnicí 828, 252 41 Dolní Břežany, Czechia.
We present an active alignment and stabilization control system for laser setups based on a thin-disk regenerative amplifier. This method eliminates power and pointing instability during the warm-up period and improves long-term stability throughout the entire operation. The alignment method is based on a four-mirror control system consisting of two motorized mirrors placed within the regenerative amplifier cavity, two additional motorized mirrors external to the amplifier cavity, and four camera detectors.
View Article and Find Full Text PDFImpact of irradiation conditions on therapy of Lewis lung carcinoma in mice using glucose-ethylenediamine carbon dots.
BMC Cancer
January 2025
Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, Kyiv, 01601, Ukraine.
Background: nowadays, the photoacoustic imaging is in the mainstream of cancer theranostics. In this study the nanoparticles with previously proven photoacoustic imaging properties, i.e.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!