Article
Chemistry, Analytical
Lin Qiu, Yuhao Ma, Yuxin Ouyang, Yanhui Feng, Xinxin Zhang
Summary: A new freestanding sensor-based 3 omega technique has been developed, expanding the traditional 3 omega technology to anisotropic materials. The flexible sensor, fabricated using mature flexible printed circuit production techniques, is non-destructive and suitable for porous surfaces. This new sensor has considerable application value for characterizing thermal properties of crystals with anisotropic thermophysical properties and other structures where traditional 3 omega technique is not applicable.
Article
Materials Science, Multidisciplinary
D. Gasca-Figueroa, G. Gutierrez-Juarez, F. J. Garcia-Rodriguez, L. Polo-Parada, A. Perez-Pacheco, M. G. Bravo-Sanchez
Summary: A new method based on differential photoacoustic cells and RG model is proposed for direct measurement of thermal effusivity in solids. Two identical photoacoustic cells are used, with one acting as the reference material and the other as the study material. By observing the changes in the photoacoustic pressure ratio graph, the thermal effusivity of the materials can be determined. The thermal effusivity of aluminum and copper were successfully determined as a proof of concept.
RESULTS IN PHYSICS
(2022)
Review
Chemistry, Multidisciplinary
Jianjun Zhou, Shen Xu, Jing Liu
Summary: This review provides a detailed introduction to a non-contact thermal measurement method, photothermal technique based on thermal radiation. This technique can extract abundant thermal properties and micro/nanostructure information through laser heating on the surface. It has important application prospects and research value.
Article
Nanoscience & Nanotechnology
L. Qiu, Y. Ma, S. Wang, Y. Ouyang, Y. Feng
Summary: High-accuracy thermophysical property measurement technique is crucial for the advancement of new materials and structures, particularly with the rise of nanomaterials. This study presents a Labview-3? technique that enhances the measurement speed, accuracy, and uncertainty for a wide range of nanomaterials through automated data acquisition and thermal measurement functions. This high-speed, automatic, and intelligent method holds great potential for thermophysical property measurement of various materials.
Article
Agronomy
Shota Fukuda, Kentaro Koba, Masaki Okamura, Yuichi Watanabe, Jun Hosoi, Koji Nakagomi, Hideo Maeda, Motohiko Kondo, Daisuke Sugiura
Summary: A new technique was developed to nondestructively determine rice LAI by measuring NIR and PAR with optical sensors and calculating SR and N/P ratios based on growth stages. This technique successfully drew seasonal canopy growth curves, and can be used as a powerful tool for evaluating, modeling, and phenotyping crop growth characteristics in various rice cultivars as well as other crops.
FIELD CROPS RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Decho Surangsrirat, Vikram Sridhar, Onsiri Srikun, Mananya Puanglamjeak, Prab Birdi, Songphon Dumnin, Chusak Thanawattano, Kam S. Chana
Summary: This study aims to develop a real-time and low-cost device for detecting the water content in multiple organic solvents at low concentrations. The results show that the proposed device is feasible for determining water content in methanol, ethanol, and isopropanol.
Article
Acoustics
To Kang, Jeong K. Na, Tackgyu Lee, Sung-Jin Song
Summary: Research has shown that changes in the acoustic nonlinearity parameter can be related to material properties, but a novel field-deployable method is needed for measuring absolute values. The piezoelectric sensor-based method measures relative changes, while the capacitive detection method is more complex.
Article
Materials Science, Multidisciplinary
Cyril Nicard, Maxime Farin, Emmanuel Moulin, David Balloy, Ingrid Proriol Serre
Summary: This paper investigates the efficiency of a Non-Destructive Testing method called ultrasonic Coda Wave Interferometry (CWI) to continuously measure the thickness loss caused by corrosion on an S355 grade steel in 3 wt% NaCl distilled water. Electrochemical experiments were conducted at different temperatures using aqueous NaCl, and the thickness loss and corrosion rate were continuously measured using CWI with a piezoelectric transducer. The results were verified post-experiment using an optical depth profile measurement.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Kai Zhao, Haoyu Zhuang, Liu Cui, Jin Ma, Guozheng Yan, Ding Han
Summary: This paper reports a packaging technique to improve the stability and accuracy of pressure sensors. By enclosing the pressure sensors in silicone oil and encapsulating them with silicone membrane and parylene-N, the sensors are protected from the surrounding environment and can maintain stable pressure. In vitro tests demonstrate that the packaged pressure sensors exhibit better stability with an average baseline drift of 0.025 mmHg/week.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Biochemical Research Methods
Cheng-Xiao Fan, Jin-Hai Li, Jie-Peng Yao, Jing-Jing Liu, Nan Wang, Lan Huang, Zhong-Yi Wang
Summary: Using PEDOT as the conductive polymer, an innovative small-scale sensor was developed for directly measuring salicylate ions in plants, enabling rapid detection of salicylic acid without complicated pretreatment. The sensor demonstrated excellent miniaturization potential, longer lifespan, robustness, and direct usability for detecting salicylate ions in real samples without additional pretreatment. It exhibited good Nernst slope, a wide linear range, and a low detection limit, making it a reliable tool for in situ measurement of salicylic acid in plants in vivo.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Construction & Building Technology
Zhenxing Du, Li Tian, Penggang Wang, Zhaoyi Chen, Dongbo Cui, Zuquan Jin, Hai Zhang
Summary: In this study, an all-solid-state chloride sensor with excellent performance was developed, which has great potential for non-destructively monitoring chloride penetration in concrete structures.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Computer Science, Interdisciplinary Applications
Miaomin Wang, Fuyou Xu, Yan Xu, James Brownjohn
Summary: This paper proposes a subpixel refinement technique called self-adaptive edge points matching (SEPM) to accurately measure subpixel-level displacements under varying lighting conditions. The SEPM utilizes the gradient and shape information of the target edge contour and has demonstrated high accuracy in three different illumination tests.
COMPUTER-AIDED CIVIL AND INFRASTRUCTURE ENGINEERING
(2023)
Article
Optics
T. Nuntakulkaisak, R. Bavontaweepanya, Y. Infahsaeng, P. Wongjom, W. Pijitrojana, S. Suwanna, E. Pongophas
Summary: A phase-sensitive transparent grating interferometer is proposed for measuring small displacements. By inserting a transparent grating between a light source and a reflective mirror, and superposing the diffracted light beams of the forward and backward propagation to form an interference pattern, the displacement of the reflected mirror can be inferred. This simple setup can measure nanometer-scale mirror displacement with high precision.
Article
Engineering, Multidisciplinary
Hong Quang Pham, Trung Kien Nguyen, Quang Ngan Pham, Van Sy Le, Minh Hung Vu, Thi Thuy Truong, Chau Vi Khang Ngo, CheolGi Kim, Sidina Wane, Azzedine Bousseksou, Ferial Terki, Quang Hung Tran
Summary: The magnetic flux density method is suitable for monitoring wall thinning in pipes. However, quantifying gradual reduction is challenging due to the small signal being hindered by noise in magnetic field measurements. This study presents a high-precision instrument for accurately measuring small thickness reductions. By optimizing the size of the magnetizer and using an ultrahigh-sensitivity magnetometer, reliable and reproducible measurements can be achieved.
Article
Construction & Building Technology
Zhenxing Du, Penggang Wang, Zhaoyi Chen, Dongbo Cui, Zuquan Jin, Hai Zhang
Summary: The corrosion process of concrete is usually accompanied by pH changes of the pore solution. However, the commonly used methods for measuring the pH value of concrete pore solution are inefficient and cannot provide real-time results. This study developed an all-solid-state pH sensor that showed high accuracy in detecting the pH value of concrete, and it has the potential for non-destructively monitoring the corrosion process of concrete.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Jin Wu, Zixuan Wu, Haojun Ding, Yaoming Wei, Wenxi Huang, Xing Yang, Zhenyi Li, Lin Qiu, Xiaotian Wang
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Thermodynamics
Lin Qiu, Yanbo Du, Yangyang Bai, Yanhui Feng, Xinxin Zhang, Jin Wu, Xiaotian Wang, Caihong Xu
Summary: This study synthesized mesoporous and macroporous SiOC ceramics using polydimethylsiloxane with different viscosities, and found that the thermal conductivities of gas phase and solid phase inside the porous structure increase with increasing pore size at the nanometer scale, while the overall thermal conductivity of the porous structure decreases. The findings suggest strategies for designing SiOC porous ceramic super-insulation materials with extremely low thermal conductivity.
JOURNAL OF THERMAL SCIENCE
(2021)
Article
Thermodynamics
Lin Qiu, Yuxin Ouyang, Yanhui Feng, Xinxin Zhang, Xiaotian Wang, Jin Wu
Summary: The study found that the thermal conductivity of nanofilms decreases as the thickness increases, due to the internal pore channels induced by the preparation process causing electron-phonon nonequilibrium effect inside the film.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Kunming Yang, Zhongyin Zhang, Haohao Zhao, Bihuan Yang, Boan Zhong, Naiqi Chen, Jian Song, Chu Chen, Dawei Tang, Jie Zhu, Yue Liu, Tongxiang Fan
Summary: The study investigates the thermal boundary conductance of Dia/Cu interfaces with different crystallographic orientations. By applying ion-beam bombardment, the orientation dependent conductance is reduced, revealing contrasting trends in conductance with ion-bombardment time. The findings shed light on the heat transport mechanisms at metal/nonmetal interfaces.
Article
Multidisciplinary Sciences
Zhongyin Zhang, Zheng Chang, Xuanhui Fan, Jing Zhou, Xinwei Wang, Gen Li, Xiaoliang Zhang, Jie Zhu, Dawei Tang
Summary: Utilizing high pressure to modulate the optical properties of Al nano-film, this study found that the dR/dT values exhibit a sine-like pressure dependence, with the zero-crossing occurring at around 6 GPa, which can be explained from the perspective of electron transitions.
Article
Physics, Applied
Chengyang Yuan, Zhongyin Zhang, Jie Zhu, Jiafei Zhao, Lei Yang, Lunxiang Zhang, Yongchen Song, Dawei Tang
Summary: The tetrahydrofuran (THF) clathrate hydrate exhibits an ultra-low thermal conductivity, with the trapped THF molecules playing a negligible role in reducing thermal conductivity, which is mainly dominated by the large unit cell and complex cage-like host structure.
APPLIED PHYSICS LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Jing Zhou, Kunming Yang, Bihuan Yang, Boan Zhong, Songsong Yao, Youcao Ma, Jian Song, Tongxiang Fan, Dawei Tang, Jie Zhu, Yue Liu
Summary: Graphene has great potential for thermal management applications due to its high thermal conductivity. However, the low interface thermal conductance between graphene and metals limits its effective heat dissipation. In this study, the interfacial electron behaviors were investigated by comparing hydrogenation-treated graphene with pure graphene, and the effect of graphene layer numbers on the interfacial thermal conductance was systematically studied. The results showed that a larger interfacial thermal conductance can be obtained with lower layer numbers.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Jing Zhou, Xuanhui Fan, Jie Zhu, Zhongyin Zhang, Dawei Tang
Summary: This study systematically investigates the use of graphene and thin graphite films for thermal management in high-electron-mobility transistors (HEMTs). The thermal conductivity and interfacial thermal resistance (ITR) between graphite and other materials were investigated to determine their effect on thermal management performance. Transient thermal analysis revealed that graphene and thin graphite films offer efficient heat dissipation in HEMTs under realistic conditions, providing insights for heat dissipation optimization.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Materials Science, Multidisciplinary
Zhongyin Zhang, Xuanhui Fan, Jie Zhu, Kunpeng Yuan, Jing Zhou, Dawei Tang
Summary: High-pressure is widely used to improve material performances, such as thermal conductivity and interfacial thermal conductance. Gallium arsenide (GaAs) has attracted extensive attention in high-pressure studies due to its technological importance and complex structure transitions. The thermal properties of GaAs under high pressure are still not well understood. In this study, we systematically investigate GaAs and G Al/GaAs under multi-structure up to approximately 23 GPa. Our findings provide insights into understanding the role of phonons, lattice defects, and electrons in GaAs under pressure, as well as the enhancement of thermal conductance in G Al/GaAs.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Chengyang Yuan, Zhongyin Zhang, Jie Zhu, Jiafei Zhao, Lunxiang Zhang, Lei Yang, Yongchen Song, Dawei Tang
Summary: The underlying mechanism of limited lattice thermal conductivity in energy-related host-guest crystalline compounds has been studied. By using the time domain thermoreflectance technique and theoretical calculations, the ultralow thermal conductivity of xenon clathrate hydrate was investigated. It was found that localized guest modes hybridize with acoustic branches and severely limit the acoustic contribution. Additionally, guest fillers were found to cause significant phonon scattering in a wide range of frequencies.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Hongyang Li, Chengzhi Hu, Yanhui Jiang, Jie Zhu, Yichuan He, Xianfeng Hu, Dawei Tang
Summary: In this study, a flexible and leakage-proof sodium alginate-based phase change composite film (PCCF) was fabricated via a facile and green synthesis method with the assistance of stainless steel meshes. Multiwall carbon nanotubes (MWCNTs) were used to enhance the thermal conductivity of the PCCF. The PCCF exhibited leakage proof and high thermal performance, making it suitable for providing thermal comfort to electronic devices.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Jing Zhou, Kunming Yang, Bihuan Yang, Boan Zhong, Songsong Yao, Youcao Ma, Jian Song, Tongxiang Fan, Dawei Tang, Jie Zhu, Yue Liu
Summary: As a typical two-dimensional material, graphene has high in-plane thermal conductivity but low interface thermal conductance with metals, limiting its effectiveness in thermal management. This study investigates the interfacial electron behaviors between hydrogenation-treated graphene and nickel nanofilms. The results show that a larger interface thermal conductance can be obtained when the layer number is low, possibly reaching a peak value at a certain layer number.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Hanying Zou, Yanhui Feng, Lin Qiu, Xinxin Zhang
Article
Thermodynamics
Lin Qiu, Dawei Sang, Yanli Li, Yanhui Feng, Xinxin Zhang
APPLIED THERMAL ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Jiaojiao Wang, Jingna Zhao, Lin Qiu, Fengcheng Li, Changle Xu, Kunjie Wu, Pengfei Wang, Xiaohua Zhang, Qingwen Li
