Results 141 to 150 of about 10,013 (252)

Review of Recent Advances in QEPAS-Based Trace Gas Sensing

Applied Sciences, 2018
Quartz-enhanced photoacoustic spectroscopy (QEPAS) is an improvement of the conventional microphone-based photoacoustic spectroscopy. In the QEPAS technique, a commercially available millimeter-sized piezoelectric element quartz tuning fork (QTF) is used
Yufei Ma
doaj   +1 more source

Reverse evolution of fluorine and side chains in bisisoindigo‐based copolymers enabling electron mobility exceeding 7 cm2·V−1·s−1

FlexMat, EarlyView.
Abstract We report the design and synthesis of a series of bisisoindigo‐based donor–acceptor (D–A) copolymers, P4F18, P4F10, P2F18, and P2F10. By reverse evolution of fluorine substitution and side‐chain structure, we effectively tuned the frontier molecular orbital energy levels, intermolecular interactions, molecular self‐assembly, and thus charge ...
Keli Shi, Chang Cui, Qianqian Zhao, Jianping Chen, Weifeng Zhang, Jiadi Chen, Qian Che, Yunchao Zhang, Youjia Li, Zhihui Chen, Liping Wang, Gui Yu   +11 more
wiley   +1 more source

Polymaterial Lattice Discrete Particle Model for the Optimization of Lightweight Aggregate Concrete: Intragranular Fracture and Compression Behavior

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Lightweight aggregate concrete (LWAC) offers clear advantages for sustainable construction, including reduced density and improved thermal insulation. However, its mechanical and fracture behavior is difficult to characterize due to the heterogeneity and brittle crushing of porous lightweight aggregates.
Yuhui Lyu, Fan Zheng, Matthew Troemner, Erol Lale, Ke Yu, Dono Toussaint, Hailong Ye, Gianluca Cusatis   +7 more
wiley   +1 more source

Quartz-enhanced photoacoustic spectroscopy exploiting tuning fork overtone modes

, 2015
We report on a quartz-enhanced photoacoustic sensor (QEPAS) based on a custom-made quartz tuning fork (QTF) to operate in both the fundamental and the first overtone vibrational mode resonances.
Geras, A., Dong, L., Patimisco, P., Scamarcio, G., SPAGNOLO, VINCENZO LUIGI, Starecki, T., Spagnolo, V., Tittel, F.K., A. Geras, T. Starecki, SAMPAOLO, ANGELO, A. Sampaolo, Tittel, F. K., P. Patimisco, Sampaolo, A., SCAMARCIO, Gaetano, PATIMISCO, PIETRO, F. K. Tittel, G. Scamarcio, V. Spagnolo, L. Dong   +20 more
core   +1 more source

Pretreatment Effects of Conventional and Reactive Extrusion on LLDPE Waste Pyrolysis

Polymer Engineering &Science, EarlyView.
Schematic overview of the pyrolysis study using original and pretreated LLDPE waste samples. Pretreatment was performed via twin‐screw extrusion at 450°C: without additives (REX), with peroxide (REX‐RO2), or with polypropylene (REX–PP). All four samples underwent pyrolysis at 450°C–475°C for 15–45 min.
Yasmin Fialho Siqueira, Débora M. V. Miranda, Larissa L. A. Carvalho, Natasha K. Sitton, Ana Paula de Azeredo, Regina F. Nonemacher, Raquel S. Mauler, Luiz Eduardo P. Borges, José Carlos Pinto   +8 more
wiley   +1 more source

Effect of Gold Nanoparticle Radiosensitization on DNA Damage Using a Quartz Tuning Fork Sensor. [PDF]

Micromachines (Basel), 2023
Alanazi N, Alanazi R, Algawati M, Alzahrani K, Alodhayb AN.   +4 more
europepmc   +1 more source

Recent advances in Joule‐heating synthesis of functional nanomaterials for photo and electrocatalysis

PhotoMat, EarlyView.
This paper presents a comprehensive overview of recent advancements in Joule‐heating synthesis of photo and electrocatalysts, emphasizing its benefits and applications. The objective is to offer an effective strategy for enhancing the diversity and performance of catalytic materials.
Jiaqi Li, Laiyu Luo, Siyu Wang, Haojie Song, Baojiang Jiang   +4 more
wiley   +1 more source

Deciphering Branched Galactomannan Structures via Multistage Ion Mobility MS and MSn Fragmentation (Multistage IMSn)

Rapid Communications in Mass Spectrometry, EarlyView.
ABSTRACT Rationale Hemicelluloses are abundant carbohydrate components in plant cell walls. They play a crucial structural role in binding cellulose microfibrils, in addition to other biological functions. Their high structural variability directly influences their biological properties, making it important to establish a structure–function ...
Rania Benazza, Mathieu Fanuel, Hélène Rogniaux, David Ropartz   +3 more
wiley   +1 more source

High-Sensitivity Dynamic Detection of Dissolved Acetylene in Transformer Oil Based on High-Power Quartz-Enhanced Photoacoustic Spectroscopy Sensing System

Photonics
To enable the highly sensitive detection of acetylene (C2H2) dissolved in transformer oil, a high-power quartz-enhanced photoacoustic spectroscopy (QEPAS) sensing system is proposed.
Yuxiang Wu, Tiehua Ma, Chenhua Liu, Yashan Fan, Shuai Shi, Songjie Guo, Yu Wang, Xiangjun Xu, Guqing Guo, Xuanbing Qiu, Zhijin Shang, Chuanliang Li   +11 more
doaj   +1 more source

Equivalent Electromechanical Model for Quartz Tuning Fork Used in Atomic Force Microscopy. [PDF]

Sensors (Basel), 2023
Lin R, Qian J, Li Y, Cheng P, Wang C, Li L, Gao X, Sun W.   +7 more
europepmc   +1 more source