Results 11 to 20 of about 12,023 (217)

Design of Highly Selective Gas Sensors via Physicochemical Modification of Oxide Nanowires: Overview

Sensors, 2016
Strategies for the enhancement of gas sensing properties, and specifically the improvement of gas selectivity of metal oxide semiconductor nanowire (NW) networks grown by chemical vapor deposition and thermal evaporation, are reviewed. Highly crystalline
Hyung-Sik Woo, Chan Woong Na, Jong-Heun Lee   +2 more
doaj   +1 more source

Design and performance of a Nafion dryer for continuous operation at CO₂ and CH₄ air monitoring sites [PDF]

Atmospheric Measurement Techniques, 2013
In preparation for routine deployment in a network of greenhouse gas monitoring stations, we have designed and tested a simple method for drying ambient air to near or below 0.2% (2000 ppm) mole fraction H2O using a Nafion dryer.
L. R. Welp, R. F. Keeling, R. F. Weiss, W. Paplawsky, S. Heckman   +4 more
doaj   +1 more source

Time-Varying Oscillatory Response of Burning Gel Fuel Droplets

Gels, 2023
Gel fuel droplets exhibit disruptive burning due to the rupture of their gellant shell, which causes the release of unreacted fuel vapors from the droplet interior to the flame in the form of jets.
Janmejai Sharma, Ankur Miglani
doaj   +1 more source

MOF@MOF core-shell hybrid adsorbents with controlled water vapor affinity towards enhanced and steady CO2 capture in moist conditions

Carbon Capture Science & Technology
Metal-organic frameworks (MOFs) are promising adsorbents for CO2 capture due to their highly tuneable chemical and structural properties. However, most MOFs exhibit a strong affinity for moisture, an ubiquitous component of CO2-containing mixtures such ...
Solomon K. Gebremariam, Anish Mathai Varghese, Suresh Kuppireddy, Yasser Al Wahedi, Ahmed AlHajaj, Georgios N. Karanikolos, Ludovic F. Dumée   +6 more
doaj   +1 more source

Simulation of Heat and Mass Transfer Characteristics for the Optimal Operating Conditions of a Gas-to-Gas Membrane Humidifier with Porous Metal Foam

Energies, 2020
The shell-and-tube type gas-to-gas membrane humidifier used with air supply to polymer electrolyte membrane fuel cell supplies heat and vapor through a membrane and does not require an additional power source.
Hyesoo Jang, Myoung-Hwan Kim, Sang-Kyun Park, Yul-Seong Kim, Byung Chul Choi   +4 more
doaj   +1 more source

Analysis of ultrastructure and microstructure of blackbird (Turdus merula) and song thrush (Turdus philomelos) eggshell by scanning electron microscopy and X-ray computed microtomography

Scientific Reports, 2022
The unique structure of the egg allows for efficient reproduction on land. Although the functions of the egg are ensured by the concomitant cooperation of all its structures, the eggshell also plays a significant role.
Krzysztof Damaziak, Agata Marzec
doaj   +1 more source

Silica Layer Used in Sensor Fabrication from a Low-Temperature Silane-Free Procedure

Chemosensors, 2021
Silica (SiO2, silicon dioxide—a dielectric layer commonly used in electronic devices) is widely used in many types of sensors, such as gas, molecular, and biogenic polyamines.
Pei-Cheng Jiang, Yu-Ting Chow, Chi-Wei Chien, Cheng-Hsun-Tony Chang, Chii-Ruey Lin   +4 more
doaj   +1 more source

ELECTROLYTE-PLASMA TREATMENT UNDER NON-STATIONARY MODE IN A HIGH-GRADIENT ELECTRIC FIELD

Наука и техника, 2017
Electrolyte-plasma treatment has become widespread in the industry as an alternative to traditional chemical, electrochemical and mechanical methods of improving the surface quality of products made of metallic materials.
Yu. G. Aliakseyeu, A. Yu. Korolyov, A. E. Parshuto, V. S. Niss   +3 more
doaj   +1 more source

Synthesis of CSA-Capped Poly(aniline-co-aniline-2-sulfonic acid) Spherical Nanoparticles for Gas Sensor Applications

Chemosensors
We synthesized emeraldine salts of poly(aniline-co-aniline-2-sulfonic acid) capped with camphorsulfonic acid (CSA), forming spherical nanoparticles (NPs), i.e., CSA-capped P(ANi-co-ASNi), and demonstrated their efficacy as gas sensor elements.
Ki-Hyun Pyo, Ji-Sun Kim, Yoon Hee Jang, Jin-Yeol Kim   +3 more
doaj   +1 more source

Impedance Spectroscopy Study of Charge Transfer in the Bulk and Across the Interface in Networked SnO₂/Ga₂O₃ Core–Shell Nanobelts in Ambient Air

Sensors
Metal oxide core–shell fibrous nanostructures are promising gas-sensitive materials for the detection of a wide variety of both reducing and oxidizing gases.
Maciej Krawczyk, Ryszard Korbutowicz, Patrycja Suchorska-Woźniak   +2 more
doaj   +1 more source