Article
Chemistry, Physical
J. W. Lv, C. Wei, S. Zhang, Z. L. Shi, H. R. Zhang, X. Y. Zhang, M. Z. Ma
Summary: The effects of sub-T-g isothermal annealing on the microstructure, mechanical properties, and serrated flow behaviors of Ti33Zr30Cu9Ni5.5Be22.5 BMG were investigated in this study. The results showed a decrease in free volume content and the precipitation of nanocrystals with annealing time extension, leading to improved compressive plasticity initially but degradation with further growth of nanocrystals. Serrated rheology analysis revealed different stress drop characteristics between specimens annealed for 1.0 h and 4.0 h, indicating a transition from power-law distribution to chaotic dynamics of jerk flow.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Ibrahim Dubdub
Summary: This paper aims to investigate the kinetics of polypropylene (PP) polymer pyrolysis using thermogravimetric analysis (TGA). The results show that the activation energy values for PP polymer pyrolysis at different conversions are in good agreement with the values obtained from four model-free methods. Additionally, the most controlling reaction mechanism identified using Criado's method is the geometrical contraction models-cylinder model.
Article
Chemistry, Multidisciplinary
Shuming Li, Shasha Hao, Yetong Yang, Yuxing He, Chenle Long, Zhiqi Zhang, Jing Zhang
Summary: In this study, phosphatidylserine targeting polymer brush materials were used to selectively separate exosomes with improved integrity and purity using ordinary centrifuge force. Compared with common methods, the content of contaminated lipoprotein in the resulting exosomes decreased significantly.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Chaehun Lim, Yoonyoung Ko, Cheol Hwan Kwak, Seokjin Kim, Young-Seak Lee
Summary: Polyvinylidene fluoride (PVDF) has attracted much attention as an effective additive for mesophase production in recent years. This study discusses the changes in properties of pitches obtained with different amounts of added PVDF and the influence of PVDF decomposition on mesophase formation. The results show that PVDF is an effective additive for mesophase pitch production.
Article
Chemistry, Analytical
Christopher P. Mancuso, Zhi-Xiang Lu, Jason Qian, Sarah A. Boswell, Michael Springer
Summary: Quantitative diagnostics are crucial for controlling infectious diseases and informing treatment strategies. The qRPA technology provides semiquantitative information and may be useful for monitoring the progress of viral infections or other diseases.
ANALYTICAL CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Ziyao Bian, Zhifang Zhang, Kuangjian Zhao, Kuan Li, Qian Xiao, Kainan Li, Haijing Cao, Zebo Fang, Feng Jiang, Huiyu Li, Yanyan Zhu
Summary: A simple and green process was developed to produce CoS2/C materials, showing multiple advantages for supercapacitors such as high specific surface area, specific capacitance, and improved conductivity. The CoS2/C materials demonstrated significantly improved specific capacitance and excellent rate capability under high currents, with an ultrahigh capacitance retention rate.
Article
Physics, Applied
A. Nardo, C. de Santi, C. Carraro, F. Sgarbossa, M. Buffolo, P. Diehle, S. Gierth, F. Altmann, H. Hahn, D. Fahle, M. Heuken, M. Fouchier, A. Gasparotto, E. Napolitani, G. Meneghesso, E. Zanoni, M. Meneghini
Summary: This study investigates the effectiveness of laser-induced treatment compared to rapid-thermal annealing for activating p-type dopants in Mg-doped GaN layers. The results show that laser treatment is an effective process for activation, even at low energy densities. The resistivity of the samples varies with temperature, and the analysis indicates that laser treatment has minimal effects on the concentration profile and surface roughness, except at higher energy densities where surface degradation is observed.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
J. W. Lv, C. Wei, S. Zhang, Z. L. Shi, H. R. Zhang, Y. J. Yang, X. Y. Zhang, M. Z. Ma
Summary: The effects of deformation and isothermal annealing in the supercooled liquid region on the microstructure and room-temperature mechanical properties of Ti33Zr30Cu9Ni5.5Be22.5 bulk metallic glass were investigated. The thermally-deformed specimens showed denser structures and higher characteristic temperatures compared to the annealed specimens, with higher yield and fracture strengths but similar plasticity. Both deformed and annealed specimens precipitated nanocrystals at around 648 K, leading to a rapid decrease in plasticity.
Article
Biochemistry & Molecular Biology
Supabhorn Yimthiang, David A. Vesey, Phisit Pouyfung, Tanaporn Khamphaya, Glenda C. Gobe, Soisungwan Satarug
Summary: Chronic cadmium exposure can cause kidney damage, leading to a decline in glomerular filtration rate (GFR) and tubular proteinuria. Diabetic kidney disease (DKD) is characterized by albuminuria and declining GFR, and exposure to cadmium can worsen the progression of kidney disease in diabetics. A study involving 88 diabetics and 88 controls found that even low levels of cadmium exposure were associated with tubular dysfunction and increased risk of albuminuria, especially in individuals with a higher body burden of cadmium, hypertension, and reduced eGFR.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Yang-Yang Liu, Ji-Heng Li, Xiao-Long Li, Xing Mu, Xiao-Qian Bao, Xue-Xu Gao
Summary: Strong Goss textured sheets with large magnetostriction were prepared by rolling and isothermal annealing processes. The study found that a significant magnetostriction effect can be achieved with a lower Ga content, providing a more efficient approach for industrial production of high-performance magnetostrictive alloy sheets.
Article
Polymer Science
Kan Hatakeyama-Sato, Hiroki Adachi, Momoka Umeki, Takahiro Kashikawa, Koichi Kimura, Kenichi Oyaizu
Summary: Automated molecule design by computers is an important topic in materials informatics. However, generating practical structures is challenging due to the difficulty in treating material stability, synthetic difficulty, mechanical properties, and other parameters. This problem is addressed by introducing supervised/unsupervised machine learning and quantum-inspired annealing, which helps experimental researchers discover practical materials more efficiently.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Physical
M. W. McGeoch, R. L. Owen, S. Jaho, J. E. M. McGeoch
Summary: Hemoglycin, a polymer composed of iron and glycine, has been found in carbonaceous meteorites. It shows unique light absorption properties and exhibits visible light re-emission when irradiated by x-rays, with dominant emissions at 489 and 551 nm.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Polymer Science
Nan Jiang, Ke-Xin Li, Wei Xie, Shu-Ran Zhang, Xin Li, Yue Hu, Yan-Hong Xu, Xing-Man Liu, Martin R. Bryce
Summary: In this study, clusters with different extents of aggregation were successfully prepared by heat-induced or light-triggered methods, and the multicolor fluorescence of a single polymeric material was controllably regulated. The luminescence behavior of the material varied with the microscopic control of the aggregation structure. This research provides a template for developing new materials for multicolor fluorescence and demonstrates the potential of PUE as a smart material through the construction of a pattern with encryption, anticounterfeiting, and information transmission functions.
Article
Chemistry, Analytical
Jiamin Jiang, Lanxin Xu, Yongling Zhang, Jiali Ma, Chenjie Gu, Xingfei Zhou, Guodong Wei, Tao Jiang
Summary: This study proposes a new internal standard-mediated quantitative surface enhanced Raman scattering (SERS) technique, which enables sensitive detection and efficient degradation of pernicious molecules through tunable internal standards and recyclable composite substrates.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Polymer Science
Thanh Binh Nguyen Thi, Seisuke Ata, Takahiro Morimoto, Yuto Kato, Masahiro Horibe, Takeo Yamada, Toshiya Okazaki, Kenji Hata
Summary: This study successfully improved the electrical conductivity of carbon nanotube-reinforced polycarbonate composites, significantly increasing the conductivity through post-processing annealing. After annealing, the electrical network of single-walled carbon nanotube-based polymer composites transitioned from aligned and unconnected to randomly oriented interconnected network.
Article
Materials Science, Composites
Yuan Fan, Zhuoxin Liu, Guangming Chen
Summary: Thermoelectric composites based on metal-organic frameworks (MOFs) have shown great potential in waste heat utilization and flexible electronics. In this study, MOF-based ternary composites were constructed using a conducting polymer and single-walled carbon nanotubes. The ternary composites exhibited improved thermoelectric properties and could be used in flexible and durable thermoelectric devices.
COMPOSITES COMMUNICATIONS
(2022)
Article
Materials Science, Composites
Yichuan Zhang, Zhipeng Li, Guangming Chen, Yue Hu, Liang Deng
Summary: In this study, the trade-off between thermoelectric (TE) and mechanical (ME) performances in flexible polycarbonate (PC)/single-walled carbon nanotube (SWCNT) composites was successfully decoupled via interfacial adjustment. The obtained composite exhibited improved TE and ME performances by enhancing interfacial affinity and electrical conductivity.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Thermodynamics
Nian Li, Guannan Jiang, Neng Gao, Guangming Chen
Summary: The flow pattern and energy transfer process in the vortex tube are extremely complex, making it difficult to directly calculate and predict the flow structure and temperature separation performance. In this study, the flow field of the vortex tube was divided into six regions and simplified according to flow features. A set of calculation methods for the internal flow field of the vortex tube was established based on the partition model. The results showed that this method is able to accurately predict the flow behavior and temperature separation performance of the vortex tube.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2022)
Article
Thermodynamics
Yilun Liu, Jingxuan Tang, Shikuan Wang, Qin Wang, Guangming Chen
Summary: This study investigated the performance of diffusion gas generating bubble pump in vapor generation and liquid pumping, and examined the effects of concentration, motive head, lifting tube number, and heat input on the bubble pump's performance. The experimental results revealed that concentration positively affected R134a flow rate and dilute solution flow rate, while motive head influenced R134a flow rate and pumping ratio. Lifting tube number significantly affected the upper limit of flow rate.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2022)
Article
Nanoscience & Nanotechnology
Peng Peng, Jiaqian Zhou, Lirong Liang, Xuan Huang, Haicai Lv, Zhuoxin Liu, Guangming Chen
Summary: This study proposed a flexible quasi-solid-state TEC based on a rational design of a hydrogel electrolyte, in which the thermogalvanic effect and mechanical robustness are simultaneously regulated via multivalent ions. The introduced redox ions endow the hydrogel with excellent heat-to-electricity conversion capability and act as ionic crosslinks for effective energy dissipation. The optimized TEC exhibits a high Seebeck coefficient and significantly improved fracture toughness, demonstrating its potential as a flexible and durable energy supply system for wearable applications.
NANO-MICRO LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Li Liu, Lirong Liang, Liang Deng, Hanfu Wang, Guangming Chen
Summary: Organic thermoelectric materials have attracted attention due to their advantages of flexibility, light weight, processability, and adjustable molecular structure. However, the current trend of pursuing high electrical conductivity and power factor is misleading. This study discusses the existence of a constant Lorentz number for organic thermoelectric materials based on the Wiedemann-Franz law and an empirical relation, and proposes a modified figure of merit equation that includes the electronic contribution to thermal conductivity.
APPLIED MATERIALS TODAY
(2022)
Article
Materials Science, Composites
Kaihua Zhu, Zhao Hu, Guangming Chen
Summary: This study proposes the use of spiro-bifluorene derivatives for p-type doping to enhance the thermoelectric performance of single-walled carbon nanotubes (SWCNTs). The mechanism of effective p-type doping and strong interfacial interaction is elucidated through calculated energy levels, SWCNT surface coating, and photophysical spectroscopic measurements. Additionally, a thermoelectric device connected in series demonstrates its performance at a certain temperature gradient.
COMPOSITES COMMUNICATIONS
(2022)
Article
Polymer Science
Zhijun Chen, Yutao Cui, Chunhui Ye, Yong Sun, Jiajia Zhang, Haicai Lv, Liang Deng, Wei Xu, Qichun Zhang, Guangming Chen
Summary: Electrocatalysis using metal-organic coordination polymers (CPs) as catalyst, particularly metal-1,1,2,2-ethenetetrathiolate (ett), has gained attention for its high electrical conductivity, unique morphology and excellent redox activity. In this study, amorphous powder of CPs is synthesized and coated on carbon fiber cloth (CFC) to serve as an active electrocatalyst for hydrogen evolution reaction (HER), demonstrating promising performance and electrolysis stability.
JOURNAL OF POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Chunyu Du, Min Cao, Gang Li, Yue Hu, Yichuan Zhang, Lirong Liang, Zhuoxin Liu, Guangming Chen
Summary: This study presents a high-performance thermoelectric wearable device through the optimization of oxidative level in composite materials, and demonstrates a novel-concept thermoelectric wearable sensor that can accurately recognize human motions.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Li Liu, Jun Chen, Lirong Liang, Liang Deng, Guangming Chen
Summary: This study presents a convenient and efficient method for producing flexible PEDOT:PSS fibers with improved spinnability and thermoelectric properties. The optimized fibers exhibit high electrical conductivity and mechanical stability, and can be assembled into a simple and flexible TE generator for various applications.
Article
Chemistry, Multidisciplinary
Shouhao Wei, Jiale Ma, Dianlun Wu, Bin Chen, Chunyu Du, Lirong Liang, Yang Huang, Zhenyu Li, Feng Rao, Guangming Chen, Zhuoxin Liu
Summary: This study presents a rational design of flexible film electrodes for thermocells, which can convert thermal energy into electricity without producing waste emissions. The ternary composite electrodes constructed from Ti3C2Tx MXene, polyaniline, and single-wall carbon nanotubes exhibit enhanced thermoelectrochemical performance. The synergistic effects of Ti3C2Tx and PANI promote mass and charge transport, resulting in a thermocell with high output power.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Gang Li, Yue Hu, Jihao Chen, Lirong Liang, Zhuoxin Liu, Jia Fu, Chunyu Du, Guangming Chen
Summary: An intelligent sensing system for human IoT fire warning using a new light/heat dual-parameter-responsive SWCNT/P3HT composite is developed. The system effectively identifies and alarms fire sources due to the high thermoelectric and photoelectric performance of the composite and precise fire recognition. This study presents a new approach for designing light/heat dual-parameter-responsive materials and wearable devices with potential applications in smart home living environments.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Peng Peng, Zhao Li, Daibin Xie, Kaihua Zhu, Chunyu Du, Lirong Liang, Zhuoxin Liu, Guangming Chen
Summary: Thermocells can convert thermal energy into electricity through the thermogalvanic effect, and a hydrogel electrolyte with low-concentration redox ions has been designed to allow for the fabrication of flexible quasi-solid-state thermocells that can work under a wide temperature range. The colligative properties of the hydrogel electrolyte suppress ice crystallization and the strong coordination effect of Li+ ions with water molecules plays a vital role in the freeze-tolerance and self-humidifying capabilities of the electrolyte. This research offers a promising route for low-grade heat harvesting under extreme environmental conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Shizhen Li, Zhiquan Wei, Jinlong Yang, Guangming Chen, Chunyi Zhi, Hongfei Li, Zhuoxin Liu
Summary: The rapid development of zinc batteries is driven by the growing global demand for sustainable and cost-effective energy storage solutions. This study focuses on enhancing the energy density of zinc batteries by activating a CuS cathode using a deep-eutectic-solvent (DES)-based electrolyte. The presence of Cl- in the electrolyte is crucial for the reversibility of the redox chemistry and facilitates redox kinetics, allowing for a large discharge capacity and high energy densities.
Article
Chemistry, Physical
Zhijun Chen, Haicai Lv, Qichun Zhang, Hanfu Wang, Guangming Chen
Summary: A new solution-processed method to prepare a flexible film of a Bi2Te3/single-walled carbon nanotube (SWCNT) hybrid has been reported, showing excellent thermoelectric performances and high flexibility. The hybrid film exhibits n-type characteristic, with stable Seebeck coefficient and extremely low thermal conductivity. This research paves the way for the fabrication of solution-processable and flexible TE hybrid films.
