Article
Mechanics
J. W. Xu, P. Wang, Z. H. Liu
Summary: This paper investigates the influence of flexoelectricity on the electromechanical coupling response of piezoelectric circular nanoplates with different electric boundary conditions. The results show that the flexoelectric effect has a more significant influence on the electrostatic responses than the piezoelectric effect at the nanoscale. The induced electric potential due to the flexoelectric effect may be helpful for sensing or energy harvesting designs.
Article
Materials Science, Ceramics
Zhao Li, Chen-Bo-Wen Li, Hao-Cheng Thong, Yu-Qi Jiang, Jianchun Xu, Yanan Hao, Chao-Feng Wu, Zhongshang Dou, Ke Bi, Ke Wang
Summary: Lead zirconate titanate (PZT)-based piezoelectric ceramics with increasing average grain size were prepared and their properties were systematically investigated. The results showed that the electromechanical properties of the ceramics improved significantly with increasing grain size. In addition, the formation of non-180 degrees domain walls was suppressed in the fine-grain samples, while enhanced domain wall mobility was observed in the coarse-grain samples. This study confirmed that grain size engineering is an effective strategy for designing piezoelectric materials with excellent combination properties.
CERAMICS INTERNATIONAL
(2023)
Article
Thermodynamics
Radhouane Bel-Hadj-Tahar, Mohamed Abboud, Mouna Bouzitoun
Summary: The crystallization evolution of lead zirconate titanate (PZT) powders processed from two organic gel systems was investigated, showing that the perovskite PZT form began to crystallize as the calcining temperature reached 400 degrees C and the crystallization mechanism was related to the powder precursor system. The activation energy for perovskite formation was approximately 77 kJ mol(-1) regardless of the precursor system when the Kissinger model was applied.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Materials Science, Ceramics
Shruti Gupta, Dixiong Wang, Clive A. Randall, Susan Trolier-McKinstry
Summary: Lead acetate trihydrate is demonstrated to lower the required temperature of the cold sintering step to 200 degrees C, resulting in PZT densification through a two-step process.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Jianwei Zhao, Stephen D. Funni, Emily R. Molina, Elizabeth C. Dickey, Jacob L. Jones
Summary: Under the application of an external voltage, high electric field concentrations develop around the interdigitated electrode edges inside multilayer ceramic actuators (MLCAs). The local inhomogeneity in the electromechanical response is caused by the spatial distribution of the local electrical field. By utilizing synchrotron-based high-energy X-ray diffraction (XRD), the structural changes in partially electroded Nb-doped PbZrxTi1-xO3 samples as a function of applied electric field were investigated. The results show that the domain switching behavior and phase transitions are spatially dependent across the inactive regions in partially electroded samples, especially near the electrode edge and the tetragonal composition near the morphotropic phase boundary (MPB).
Article
Materials Science, Ceramics
Suraj Manikandan, Naveen Aruchamy, Lucas Allirol, Stephanie Girod, Sebastjan Glinsek, Emmanuel Defay, Torsten Granzow
Summary: This paper investigates the dielectric response of PZT thin films prepared by solution deposition at different frequencies and temperatures. The results show that the PZT films exhibit two relaxation phenomena in their permittivity, with the low-frequency relaxation affected by temperature and the high-frequency relaxation practically independent of temperature.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Chang-Wei Cheng, Soniya S. Raja, Ching-Wen Chang, Xin-Quan Zhang, Po-Yen Liu, Yi-Hsien Lee, Chih-Kang Shih, Shangjr Gwo
Summary: Aluminum has emerged as a promising alternative plasmonic material due to its unique optical properties and material advantages. Epitaxial growth technique enables high-fidelity nanofabrication and wafer-scale system integration, with controllable aluminum film thickness down to a few atomic monolayers.
Article
Physics, Condensed Matter
Maryam Setareh, Hassan Kaatuzian
Summary: This paper theoretically investigates the characteristics of an Ag-based SPR sensor and proposes a new sensor structure with improved sensitivity. By utilizing materials like thin metal film and BaTiO3 on an FK51A prism, sensitivity as high as 347.82 deg/RIU was achieved compared to traditional biosensors.
SUPERLATTICES AND MICROSTRUCTURES
(2021)
Article
Physics, Applied
S. Fink, J. Luebben, T. Schneller, C. Vedder, U. Boettger
Summary: This work investigates the laser-based annealing process of sol-gel-derived PZT53/47 thin films and demonstrates that the crystallization time of chemical solution deposited PZT thin films can be significantly reduced by using laser radiation. The study also reveals that short interaction times during laser annealing shift the nucleation of the PZT thin films from epitaxial to heterogeneous nucleation.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Ceramics
Travis Peters, Christopher Cheng, George A. Rossetti, Susan Trolier-McKinstry
Summary: The study investigates the correlation between dielectric and ferroelectric properties of piezoelectric thin films deposited on flexible metal substrates and the coefficient of thermal expansion mismatch and substrate thickness. Different substrates exhibit distinct peak splitting and stress states, influencing the film properties and behavior. The results highlight the importance of stress state on ferroelectric domain mobility and provide dip-coating conditions for high-quality piezoelectric films on various substrates.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Danjela Kuscer, Silvo Drnovsek, Franck Levassort
Summary: This study investigated the processing of lead-zirconate-titanate-based thick films by inkjet printing, discussing the optimal size and shape of drops under different waveforms. The effects of sintering temperature on the properties of the films were qualitatively discussed, providing insights for the preparation of piezoelectric materials for electronic devices.
MATERIALS & DESIGN
(2021)
Article
Green & Sustainable Science & Technology
Tianxin Li, Fang Zhang, Xu Wang, Ying Su
Summary: The study found that vibrating PZT bimorphs can significantly promote the number and activity of soil microorganisms under appropriate soil moisture content and pH values, increasing microbial diversity.
Article
Materials Science, Multidisciplinary
Xinhua Ming, Feng Liu, Yong Chen, Ming Chen, Yan Zhang, Bin Liu, Xujing Wang, Zhengguang Sun, Ruikun Pan, Keyu Zheng, Ying Dai, Zhao Deng, Xiyun He, Wanqiang Cao, Shimin Wang, Longhai Wang
Summary: Elasto-optic materials have extensive applications in optical-mechanical-coupled devices. In this study, lanthanum-modified lead zirconate-lead titanate (PLZT) transparent ceramics close to MPB are successfully prepared using the hot-pressing method. The PLZT ceramics exhibit high transmittance and a large elasto-optic effect, which enable the design and realization of intensity- and interference-type optical-stress sensors.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Suguna Subramanian, Sasikala Ganapathy, Sumathi Subramanian, Tamilselvi Ramasamy, Jayavel Ramasamy
Summary: The experimental results confirmed that the composite of nickel titanate nanofibers and silver nanoparticles exhibited better photocatalytic performance under visible light. The surface plasmon resonance effect of Ag NPs enhanced the absorption capability of light, effectively inhibiting the recombination of electron-hole pairs and accelerating the degradation of dyes. The rate constant was found to determine the efficiency of dye degradation.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Vikas N. Thakur, Sanjay Yadav, Ashok Kumar
Summary: By investigating the properties of Bi-substituted Pb1-xBi2x/3(Zr0.52Ti0.48)O-3 ceramics, it was found that the remanent polarization increases with decreasing Bi concentration, while the ferroelectric phase transition temperature rises. Additionally, the material exhibits low tangent loss at low temperatures, making it suitable for device applications.
MATERIALS TODAY COMMUNICATIONS
(2021)
Review
Chemistry, Multidisciplinary
Yi Wei, Wei Wang, Zhennan Wang, Hang Yang, Xinyu You, Yunna Zhao, Peipei Dang, Hongzhou Lian, Jianhua Hao, Guogang Li, Jun Lin
Summary: This review highlights the applications and properties of Bi3+-included lead-free metal halide materials in the field of optoelectronics, with a focus on the role and impact of Bi3+ ions in LFMH materials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Biophysics
Menglin Song, Man-Chung Wong, Lihua Li, Feng Guo, Yuan Liu, Yingjing Ma, Xinyue Lao, Pui Wang, Honglin Chen, Mo Yang, Jianhua Hao
Summary: We have developed a point-of-care upconversion luminescence diagnostics (PULD) method combined with a streamlined smartphone-based portable platform for rapid testing of the SARS-CoV-2 nucleocapsid (N) gene. This method demonstrates high sensitivity and signal-to-noise ratio, and can accurately identify positive COVID-19 samples.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Physical
Fumei Yang, Man-Chung Wong, Jianfeng Mao, Zehan Wu, Jianhua Hao
Summary: In this study, high-quality multilayer SnSe nanosheets were synthesized by chemical vapor deposition and their piezoelectric properties were investigated. The results showed that SnSe nanosheets have high single-crystallinity and strong layer-dependent piezoelectric coefficient, allowing for high energy conversion efficiency and maximum power density. Based on this study, a self-powered sensor for human motion monitoring was developed.
Article
Nanoscience & Nanotechnology
Wei Han, Xiaodong Zheng, Ke Yang, Chi Shing Tsang, Fangyuan Zheng, Lok Wing Wong, Ka Hei Lai, Tiefeng Yang, Qi Wei, Mingjie Li, Weng Fu Io, Feng Guo, Yuan Cai, Ning Wang, Jianhua Hao, Shu Ping Lau, Chun-Sing Lee, Thuc Hue Ly, Ming Yang, Jiong Zhao
Summary: Large-scale 2D beta-In2Se3 films and alpha-In2Se3 films were successfully grown by chemical vapor deposition, and a complete phase transition enabled the obtainment of a full spectrum of paraelectric, ferroelectric and antiferroelectric 2D films.
NATURE NANOTECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Tianhong Zhou, Haisheng Chen, Jiaxing Guo, Yanan Zhao, Xiaona Du, Qingyi Zhang, Wenwen Chen, Taiyu Bian, Zhi Zhang, Jiaying Shen, Weiwei Liu, Yang Zhang, Zhenping Wu, Jianhua Hao
Summary: This study extends the research on mechanoluminescence (ML) into the high-frequency range by combining with piezoelectric actuators. Time-resolved ML of ZnS:Mn and ZnS:Cu, Al reveals frequency-dependent saturation and quenching associated with dynamic processes of traps. Furthermore, ZnS:Mn exhibits reversible frequency-induced broad red-shift into the near-infrared range by in-situ tuning the strain frequency.
Article
Multidisciplinary Sciences
Qingyi Zhang, Ning Li, Tao Zhang, Dianmeng Dong, Yongtao Yang, Yuehui Wang, Zhengang Dong, Jiaying Shen, Tianhong Zhou, Yuanlin Liang, Weihua Tang, Zhenping Wu, Yang Zhang, Jianhua Hao
Summary: By lattice and band engineering, Zhang et al. constructed a unipolar barrier avalanche photodiode with suppressed dark current and reinforced reverse breakdown. Ga2O3-based solar blind avalanche photodetectors exhibit low voltage operation, optical filter-free and monolithic integration of photodetector arrays, and therefore they are promising to be an alternative to the bulky and fragile photomultiplier tubes for weak signal detection in deep-ultraviolet region. These findings provide insights into precise manipulation of band alignment in avalanche photodetectors, and also offer exciting opportunities for further developing high-performance Ga2O3-based electronics and optoelectronics.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Zhaoying Dang, Feng Guo, Huan Duan, Qiyue Zhao, Yuxiang Fu, Wenjing Jie, Kui Jin, Jianhua Hao
Summary: In this study, ferroelectric-tuned synaptic transistors were designed by integrating 2D black phosphorus with a flexible ferroelectric copolymer. These transistors exhibited high mobility, low energy consumption, and reliable synaptic behaviors, such as paired-pulse facilitation and long-term depression/potentiation. Furthermore, an artificial neural network was successfully simulated for handwritten digit recognition with a high accuracy of 93.6%. These findings highlight the potential of 2D ferroelectric field-effect transistors as ideal building blocks for high-performance neuromorphic networks.
Article
Chemistry, Multidisciplinary
Xinyue Lao, Yuan Liu, Lihua Li, Menglin Song, Yingjin Ma, Mo Yang, Guanying Chen, Jianhua Hao
Summary: This study presents an ultrasensitive biosensor based on core-shell upconversion nanoparticles and gold nanoparticles for accurate detection of SARS-CoV-2 viral RNA. The integration of FRET and surface plasmon greatly enhances the sensitivity of the biosensor, which has been validated using clinical samples.
Article
Materials Science, Multidisciplinary
Tianqi Zhang, Fangqing Zhao, Pai Liu, Yangzhi Tan, Xiangtian Xiao, Zhaojin Wang, Weigao Wang, Dan Wu, Xiao Wei Sun, Jianhua Hao, Guichuan Xing, Kai Wang
Summary: The mechanism of electron leakage in green InP quantum-dot light-emitting diodes is revealed. An ultrathin LiF layer is introduced to modify the work function of indium tin oxide, which simultaneously hinders the electron leakage and enhances the hole injection.
ADVANCED PHOTONICS RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Lihua Li, Zefeng Lin, Xingyi Xu, Wanshun Wang, Hu Chen, Zhibin Feng, Zhongmin Yang, Jianhua Hao
Summary: A self-enhanced catalytic nanocrystal BDS-GOx@MnOx based on a bismuth-manganese core-shell nanoflower was designed for 4T1 tumor theranostics in vitro and in vivo. The BDS-GOx@MnOx nanozymes enable enhanced starvation treatment (ST) and chemotherapy (CDT) with high efficacy and exhibit sensitive tumor microenvironment (TME) responsive character for tumor therapy as well as for tumor-enhanced computer tomography (CT) and magnetic resonance (MR) diagnostic imaging.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Wei Xu, Hongzhen Liu, Man-Chung Wong, Huimin He, Jianhua Hao, Lizhi Xu
Summary: The researchers have used a mechanically strong and mildly healable polymer (THP) as the key material for triboelectric nanogenerators (TENGs). THP is based on polyurethane-urea containing coordinate bonds, and its healing can be triggered by simply wetting the breakage area. The THP-TENGs exhibit high enough robustness to withstand mechanical loading and excellent healability for recovering device functionalities after mechanical damage.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Feng Guo, Weng Fu Io, Zhaoying Dang, Ran Ding, Sin-Yi Pang, Yuqian Zhao, Jianhua Hao
Summary: Currently, most three-terminal neuromorphic devices only have an active gate terminal, limiting the implementation of complex neural behaviors and brain-like thinking strategies. In this study, we utilize the unique co-existing in-plane and out-of-plane ferroelectricity in 2D & alpha;-In2Se3 to create a three-active-terminal neuromorphic device with each terminal capable of modulating conductance. Through the cooperative mode, we achieve control of food intake as a complex nervous system-level behavior and implement reinforcement learning using the coupling effect between polarizations in different directions. The practicality of three-active-terminal neuromorphic devices in handling complex tasks and their potential for implementing brain-like learning strategies are demonstrated.
MATERIALS HORIZONS
(2023)
Review
Chemistry, Physical
Xiao Han, Xueyuan Qiu, Meng Zong, Jianhua Hao
Summary: As an emerging family of 2D nanomaterials, early transition metal carbides and carbonitrides (MXenes) have shown great potential in various applications. Research on MXene-based polymer nanocomposites has gained increasing attention due to their improved oxidation and damage tolerance. MXenes can enhance the mechanical properties and provide desired thermal/electrical properties to polymer. The assembly of MXene nanosheets into MXene macrostructures (MMs) is an effective strategy to optimize the performance of the nanocomposites. This review summarizes recent research progress on MMs/polymer nanocomposites, focusing on the relationships among structures, fabrication techniques, and performance. It also discusses the applications of these nanocomposites in heat/electrical conduction, electromagnetic shielding, and flexible devices. Challenges and future perspectives for multifunctional MMs/polymer nanocomposites are also highlighted.
Article
Chemistry, Multidisciplinary
Huan Duan, Dehui Wang, Jingxi Gou, Feng Guo, Wenjing Jie, Jianhua Hao
Summary: This study fabricates two-terminal memristors based on two-dimensional MoSe2 nanosheets, which exhibit analog resistive switching (RS) behaviors and can simulate the synaptic plasticity of the human brain. The fabricated memristors successfully implement synaptic functions and achieve a high recognition accuracy of 92% in image recognition tasks. They can also emulate the learning-forgetting experience of the human brain and recognize noxious stimuli as artificial nociceptors. This research provides comprehensive investigations and promising prospects for neuromorphic computing based on 2D MoSe2 nanosheets.
Article
Chemistry, Multidisciplinary
Shuo Shi, Yifan Si, Zihua Li, Shuo Meng, Shuai Zhang, Hanbai Wu, Chuanwei Zhi, Weng-Fu Io, Yang Ming, Dong Wang, Bin Fei, Haitao Huang, Jianhua Hao, Jinlian Hu
Summary: Developing intelligent wearable protection systems is highly important for human health engineering. In this study, an intelligent wearable filtration system (IWFS) was developed using advanced nanotechnology and machine learning. The IWFS exhibited high particle filtration efficiency, low pressure drop, and healthcare monitoring function, along with man-machine interactive capability.
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Chemistry, Multidisciplinary
Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives
Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Multidisciplinary
Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim
Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.
Article
Chemistry, Multidisciplinary
Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu
Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.
Article
Chemistry, Multidisciplinary
Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani
Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.
Article
Chemistry, Multidisciplinary
Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin
Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.
Article
Chemistry, Multidisciplinary
Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu
Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.
Article
Chemistry, Multidisciplinary
Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai
Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee
Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.
Article
Chemistry, Multidisciplinary
Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He
Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.
Article
Chemistry, Multidisciplinary
Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim
Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.
Article
Chemistry, Multidisciplinary
Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong
Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.
Article
Chemistry, Multidisciplinary
Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He
Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.
Article
Chemistry, Multidisciplinary
Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc
Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.
