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Highly Sensitive Non-Dispersive Infrared Gas Sensor with Innovative Application for Monitoring Carbon Dioxide Emissions from Lithium-Ion Battery Thermal Runaway.
Micromachines (Basel)
December 2024
Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China.
The safety of power batteries in the automotive industry is of paramount importance and cannot be emphasized enough. As lithium-ion battery technology continues to evolve, the energy density of these batteries increases, thereby amplifying the potential risks linked to battery failures. This study explores pivotal safety challenges within the electric vehicle sector, with a particular focus on thermal runaway and gas emissions originating from lithium-ion batteries.
View Article and Find Full Text PDFDevelopment of a bioreactor with an integrated non-dispersive infrared CO sensor for rapid and sensitive detection of Cr(VI) toxicity in water.
J Hazard Mater
January 2025
Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A TL29 Street, Thanh Loc Ward, District 12, HCM City, Viet Nam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi, Viet Nam. Electronic address:
Whole-cell bioreactors equipped with external physico-chemical sensors have gained attention for real-time toxicity monitoring. However, deploying these systems in practice is challenging due to potential interference from unknown wastewater constituents with liquid-contacted sensors. In this study, a novel approach using a bioreactor integrated with a non-dispersive infrared CO₂ sensor for both toxicity detection and real-time monitoring of microbial growth phases was successfully demonstrated.
View Article and Find Full Text PDFElectronic band evolution between Lieb and kagome nanoribbons.
Nanotechnology
January 2025
Departamento de Física, Universidade Federal do Ceará, Campus do Pici, 60455-900 Fortaleza, Ceará, Brazil.
We investigate the electronic properties of nanoribbons made out of monolayer Lieb, transition, and kagome lattices using the tight-binding model with a generic Hamiltonian. It allows us to map the evolutionary stages of the interconvertibility process between Lieb and kagome nanoribbons by means of only one control parameter. Results for the energy spectra, the density of states, and spatial probability density distributions are discussed for nanoribbons with three types of edges: straight, bearded, and asymmetric.
View Article and Find Full Text PDFCylindrical vector beam multiplexing holography employing spin-decoupled phase modulation metasurface.
Nanophotonics
February 2024
Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China.
Cylindrical vector beams (CVBs) hold considerable promise as high-capacity information carriers for multiplexing holography due to their mode orthogonality. In CVB holography, phase holograms are encoded onto the wave-front of CVBs with different mode orders while preserving their independence during reconstruction. However, a major challenge lies in the limited ability to manipulate the spatial phase and polarization distribution of CVBs independently.
View Article and Find Full Text PDFArticle Synopsis
- The text discusses a new method for non-dispersive infrared (NDIR) sensing that uses stacked, electrically controllable bandpass filters made from multiple quantum wells (MQWs) and photonic crystals.
- By designing these components correctly, the filters can independently control the light transmission at two specific wavenumbers (1035 cm and 1085 cm) with high efficiency.
- Additionally, the stacked filters enable a mechanical-chopper-free NDIR system with a single detector, allowing effective gas concentration measurements despite variations in optical power reaching the detector.
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