Article
Materials Science, Multidisciplinary
Mohammad H. Bitarafan, Shaochen Zhou, Jussi Hanninen, Yanyan Duan, Martti Leino, Robin H. A. Ras, Juha Toivonen
Summary: Embedding fluorescent gold nanoclusters in polycarbonate films can enhance their performance in applications such as light-emitting diodes and optical data storage. The use of a photochemical process to fabricate nanoclusters results in structures with good photostability and emission characteristics.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Chemistry, Applied
Mingye Liu, Kexu Kuang, Guihua Li, Shiquan Yang, Zaiwu Yuan
Summary: Iridescent and luminescent composite films were successfully fabricated by incorporating glutathione-stabilized copper nanoclusters into cellulose nanocrystal films using a coassembly strategy. The composite films displayed broadband reflection and enhanced fluorescence, with color and intensity tunable by adjusting reaction conditions. These films were utilized to create LEDs with custom colors and patterns.
CARBOHYDRATE POLYMERS
(2021)
Article
Materials Science, Multidisciplinary
Lars J. Bannenberg, Larissa Blom, Kouji Sakaki, Kohta Asano, Herman Schreuders
Summary: Nanostructured metal hydrides have a crucial role in a hydrogen economy, as the nanostructuring or confinement of these materials significantly affects their structural and functional properties. We demonstrate that confining tantalum as a thin film extends its solubility limit, suppressing the phase transition observed in bulk upon hydrogenation. The continuous elastic deformation of the tantalum unit cell with unequal lattice constants and angles ensures volumetric expansion in the out-of-plane direction, resulting in superb performance as a hysteresis-free optical hydrogen sensor over a wide hydrogen pressure/concentration range.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Si Li, Xi-Yan Dong, Kong-Sheng Qi, Shuang-Quan Zang, Thomas C. W. Mak
Summary: This study successfully obtained four pairs of defective crystals exhibiting full-color emission and circularly polarized luminescence by doping dye molecules into the chiral crystalline metal cluster-based matrixes. The main driving force for generating defective crystals was found to be electrostatic interactions. The defect engineering strategy in this study opens up new possibilities for versatile functions in crystalline cluster-based materials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Review
Chemistry, Analytical
Sonia, Komal, Shrikant Kukreti, Mahima Kaushik
Summary: Gold nanoclusters with core size below 2 nm exhibit unique physical and chemical properties, synthesized with the assistance of templates or ligands for stability and high quantum yield, enabling diverse applications across interdisciplinary fields.
Article
Electrochemistry
Rafiq Ahmad, Marya Khan, Prabhash Mishra, Nushrat Jahan, Md Aquib Ahsan, Imran Ahmad, Mohammad Rizwan Khan, Yosuke Watanabe, Mansoor Ali Syed, Hidemitsu Furukawa, Ajit Khosla
Summary: In this study, hierarchical CuO nanoleaves were successfully synthesized and utilized in a nonenzymatic glucose biosensor, demonstrating superior electrochemical catalytic behavior. The sensor shows high sensitivity, wide linear range, low detection limit, and good selectivity, reproducibility, and stability under laboratory conditions.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Review
Chemistry, Multidisciplinary
Zhihe Liu, Zhennan Wu, Qiaofeng Yao, Yitao Cao, Osburg Jin Huang Chai, Jianping Xie
Summary: This review article focuses on the correlation between the structures, physical and chemical properties of metal nanoclusters and their applications, highlighting the basic principles of structure- and property-oriented applications of metal nanoclusters. It provides guidance for the design of metal nanoclusters with desirable properties to meet application needs.
Article
Chemistry, Multidisciplinary
Chungseong Park, Won-Tae Koo, Sanggyu Chong, Hamin Shin, Yoon Hwa Kim, Hee-Jin Cho, Ji-Soo Jang, Dong-Ha Kim, Jiyoung Lee, Seyeon Park, Jaehyun Ko, Jihan Kim, Il-Doo Kim
Summary: In this study, highly active and stable cMOFs were developed by confining bimetallic nanoparticles in the pores of a 2D cMOF, paving the way for the synthesis of highly active and conductive porous materials via bimetallic and/or multimetallic NP loading.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Junhao Ma, Yanyan Li, Jichun Li, Xuanyu Yang, Yuan Ren, Abdulaziz A. Alghamdi, Guoxin Song, Kaiping Yuan, Yonghui Deng
Summary: A polymer-mediated co-assembly method was proposed for the construction of highly connected mesoporous structures and the simultaneous loading of noble metal nanoparticles in TMOs/NM nanocomposites. The materials showed high sensitivity and selectivity in gas sensing performance, with the sensors integrated into a wireless module connected to smartphones for real-time detection of specific biomarkers.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Maryam Sabooni Asre Hazer, Sami Malola, Hannu Hakkinen
Summary: The use of metal nanoclusters is greatly influenced by their size and configuration. This study investigates the local isomers of a small gold cluster and reveals the significant impact of temperature on their electronic structure and optical properties.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Sourav Biswas, Anish Kumar Das, Surya Sekhar Manna, Biswarup Pathak, Sukhendu Mandal
Summary: A new synthetic approach using site-specific alloying has been revealed to acquire the atomic design of new functional Ag(i) nanoclusters. This approach allows precise control over the surface charge, size, and shape of the template, resulting in the self-assembly of Ag(i) with a similar core structure. The introduction of strongly interacted peripheral motif units enhances the rigidity of the cluster skeleton, reducing non-radiative transitions and facilitating room-temperature emission properties. The electron-donating effect of the peripheral motif units reduces the bandgap and influences intercluster charge carrier transport. This novel synthetic approach paves the way for well-functioning nanocluster design.
Review
Nanoscience & Nanotechnology
Xue Zhong, Zhongkui Li, Rufei Shi, Li Yan, Yanhong Zhu, Hui Li
Summary: Ion detection is crucial for various fields. Schiff bases and their complexes are widely used as ion detection probes in chemistry, environment, and biology. Nanomaterials functionalized with Schiff base ligands have shown great potential in ion-specific recognition. Colorimetric, fluorescence, and electrochemical sensors based on Schiff base nanomaterials have been developed for efficient and rapid ion detection. This review provides an overview of the principles and methods of Schiff base preparation, as well as the application of Schiff base nanomaterials in ion detection.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Sandra Rodini, Simone Genovesi, Giuliano Manara, Filippo Costa
Summary: In this paper, a waveguide-based non-contact approach is proposed to estimate the surface impedance of thin film samples. By measuring the scattering parameters and using an inversion procedure, the real part of the surface impedance can be accurately determined, while higher uncertainty is achieved in the estimation of the imaginary part.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Chemistry, Physical
Lars J. Bannenberg, Herman Schreuders, Hyunjeong Kim, Kouji Sakaki, Shigenobu Hayashi, Kazutaka Ikeda, Toshiya Otomo, Kohta Asano, Bernard Dam
Summary: The study reveals that the nanostructuring and nanoconfinement of metal hydrides have significant impacts on their structural response to hydrogen, leading to higher hydrogen-to-metal ratio, reduced tetragonality of the fct phase, and suppressed phase coexistence. These effects ensure a hysteresis free response of hafnium to hydrogen, demonstrating remarkable performance as a hydrogen-sensing material.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Yeon-Su Lim, Jong Sik Kim, Jang Han Choi, Ju Min Kim, Tae Soup Shim
Summary: A solvatochromic structural color material made of multilayered polydopamine nanoparticles (PdNPs) is presented in this study. It exhibits good solvent sensing performance and optical properties. The dynamic reflection spectral patterns during solvent drying provide information on the diffusion rate and surface tension of each solvent.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2022)
Article
Chemistry, Applied
Zaheer Masood, Qingfeng Ge
Summary: In this study, the electrochemical reduction of CO2 to C1 products at the metal-oxide/copper interface was investigated. It was found that CO2 can be reduced to CO(g), HCOOH(l), and H2CO(l) on the interfacial sites. The presence of the metal oxide/Cu interface significantly lowers the limiting potentials of electrochemical CO2 reduction, and the activity and product selectivity can be regulated by tuning the nature of the interface and selecting an appropriate solvent.
Article
Engineering, Multidisciplinary
Weiyu Zhou, Zhipeng Wu, Yi Liu, Yongqiang Chen
Summary: In this paper, a time domain boundary element method using compressed storage algorithm based on Compressed Sparse Row (CSR) format is proposed. The method is suitable for solving dynamic problems in the semi infinite domain. The CSR format is used to store the coefficient matrix and the GMRES algorithm is modified to improve the efficiency of iterative solution. The provided examples demonstrate that the proposed method can greatly reduce storage space and improve the efficiency and scale of the solution.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Chemistry, Physical
Yuyao Qin, Huixian Liu, Liwen Li, Jinyu Han, Hua Wang, Xinli Zhu, Qingfeng Ge
Summary: In this study, the direct conversion of methane to methanol over a Cr single atom catalyst (SAC) on TiO2 surface was investigated using density functional theory (DFT). It was found that H2O2 serves as an oxidant and stabilizes the active CrO species, effectively lowering the activation barrier for C-H bond cleavage. The presence of water does not change the reaction pathways but alters the relative stability of reaction intermediates.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Liwen Li, Huixian Liu, Yuyao Qin, Hua Wang, Jinyu Han, Xinli Zhu, Qingfeng Ge
Summary: Understanding the structural transformation and phase transition in solids during catalytic reactions or oxygen release is crucial for the design and optimization of chemical processes. In this study, density functional theory calculations and machine learning methods were used to investigate the reduction of CuO and its structural properties. Two types of reduction pathways were identified: uniform reduction with minimal structural changes and segregated reduction with significant reconstruction. Machine learning analysis revealed that the radial distribution functions of Cu-O and Cu-Cu play important roles in CuOx formation. Phase diagram analysis showed that CuO can be reduced to Cu2O under certain conditions. This work highlights the complexity of solid structural transformation and the potential of machine learning in studying chemical processes involving solid state materials.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Zaheer Masood, Qingfeng Ge
Summary: This study analyzes the mechanism of CO2 reduction and H-2 formation on [MP](0) catalysts (M = Fe, Co, Rh and Ir; P is porphyrin ligand) using density functional theory calculations. The results reveal the origin of the product selectivity and competition from hydrogen evolution reactions. The pK(a) of [MP-H](0) is found to be an indicator of CO or HCOO-/H-2 preference, and the minimum pH for favorable selective CO2 reduction to HCOO- over H-2 production is determined.
Article
Nanoscience & Nanotechnology
Saurabh Khuje, Firas Alshatnawi, Mohammed Alhendi, Jian Yu, Aaron Sheng, Yulong Huang, Cheng-Gang Zhuang, Jason Armstrong, Chi Zhou, Mark Poliks, Shenqiang Ren
Summary: This study reports the development of high-temperature copper-graphene conductors using additive manufacturing, which effectively prevents oxygen adsorption and migration, ensuring electric stability and reliability at high temperatures. The combination of graphene and alumina surface passivation provides passivation capabilities for flexible electronics operating under harsh conditions.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Yue Liu, Huan Yao, Liang Wu, Zhi-Hui Xie, Chuan-Jian Zhong
Summary: Using nanomaterials to design and prepare photoanodes can improve photoelectrochemical and photocathodic protection performances. This study focuses on the correlation between the detailed nanostructure and performance of a ZnO/TiO2 composite for the PCP of nickel-coated magnesium alloy. By manipulating the hydrothermal reaction temperature, a morphologically tunable nano-ZnO semiconductor was obtained, and the optimum photoelectrochemical and PCP capacities were achieved. The enhanced performance was attributed to the morphological regulation of nano-ZnO and the formation of staggered gap heterojunction between ZnO and TiO2.
APPLIED SURFACE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Verena Untiet, Felix R. M. Beinlich, Peter Kusk, Ning Kang, Antonio Ladron-de-Guevara, Wei Song, Celia Kjaerby, Mie Andersen, Natalie Hauglund, Zuzanna Bojarowska, Bjorn Sigurdsson, Saiyue Deng, Hajime Hirase, Nicolas C. C. Petersen, Alexei Verkhratsky, Maiken Nedergaard
Summary: Information transfer within neuronal circuits depends on the balance and recurrent activity of excitatory and inhibitory neurotransmission. Astrocytes, a type of glial cell, act as a dynamic Cl- reservoir regulating Cl- homeostasis in the central nervous system (CNS). Intracellular chloride concentration in astrocytes is higher and more stable during sleep, while it is lower and fluctuates in response to sensory input and motor activity during wakefulness. Efflux of Cl- from astrocytes supports inhibitory transmission in the CNS.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Damanpreet Kaur, Riya Wadhwa, Yuchen Nisika, Yuchen Zhang, Poojan Indrajeet Kaswekar, Quinn Qiao, Anju D. Sharma, Mark Poliks, Mukesh Kumar
Summary: This study reports the band alignment modification of heterojunction formed between amorphous Ga2O3 and CdS. The annealed heterojunction device shows a reduction in dark current, enhanced photocurrent, and shorter response time. The changes at the interface due to annealing lead to a significant alteration in the band alignment and carrier dynamics, thereby completely altering the ultimate device performance.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Yunfei Gao, Zhipeng Wu, Minkan Chen, Liang Lou
Summary: In this paper, a miniaturized transit-time ultrasonic flowmeter (TTUF) for low-flow measurement in small-diameter channels is presented. The proposed TTUF consists of two ScAlN-based piezoelectric micromachined ultrasonic transducers (PMUTs) and a pi-type channel. The experiment results show that the developed TTUF provides a wide range of flow measurements from 2 to 300 L/h with 1% repeatability in the channel of 4 mm diameter, which is smaller than most of the reported ones.
2023 IEEE 36TH INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS, MEMS
(2023)
Article
Multidisciplinary Sciences
Shuguang Zuo, Zhiyong Huang, Zhipeng Wu, Chang Liu
Summary: This paper proposes a machine model of permanent magnet synchronous motors (PMSMs) that combines an improved mathematical model, electrical circuit model, and data-driven method to simulate the nonlinear behavior of PMSMs. Analysis and testing of a PMSM used for the electric compressor of electric vehicles (EVs) demonstrate that the proposed model can be applied to PMSMs in various applications. The improved mathematical model considers magnetic saturation, spatial harmonics, and iron loss, and the high-fidelity reduced-order model (ROM) with flux linkage as a state variable is built based on the proposed mathematical model and data derived from finite-element analysis. The ROM incorporates the electrical circuit model of PMSMs to account for the deadtime effect and the model-in-the-loop environment is used for simulation validation, showing good accuracy.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Review
Biochemistry & Molecular Biology
Anne McMahon, Jianjun Zhao, Shan Yan
Summary: AP endonuclease 2 (APE2) is a critical protein involved in genome and epigenome integrity. It has a catalytic function in DNA repair, and recent studies have also shown its involvement in the immune response and DNA damage response. APE2 has been identified as a synthetic lethal target in cancer cells, and its overexpression in certain cancer types suggests its potential as an oncogene and prognostic marker. The modulation and manipulation of APE2's catalytic function and synthetic lethality as a target for cancer therapy needs further exploration.
Article
Engineering, Electrical & Electronic
Jinglin Sun, Zhipeng Wu, Han Wang, Peiguang Jing, Yu Liu
Summary: This study proposes an integrated binocular eye-tracking device with stereo stimuli, which can provide highly accurate 3D point-of-gaze estimation. A regression-based eye-tracking model is built based on collected eye movement data and validated through experiments. This technology has broad application prospects in 3D vision technologies and medical applications related to neurological diseases.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Chemistry, Physical
Zaheer Masood, Qingfeng Ge
Summary: The electrochemical reduction of CO2 and the oxygen evolution reaction are important for practical applications and theoretical studies. The use of different models, such as the computational hydrogen electrode and the constant electrode potential, can lead to different predictions for the limiting steps and product selectivity of these reactions. Care must be taken when using the computational hydrogen electrode model to predict the potential limiting step and limiting potential for reactions involving multiple proton-electron transfer steps.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Jiao Huang, Liwen Li, Xiaoxia Wu, Yonghua Guo, Zijun Yang, Hua Wang, Qingfeng Ge, Xinli Zhu
Summary: Studying reactions on specific surfaces of metal oxides can provide insights into the structure-activity relationships. Anatase TiO2 with different exposed facets were synthesized and tested for the catalytic ketonization of propionic acid. The results suggest that the surface geometry of the metal oxide plays a crucial role in the reaction, with the (001) facet being the most active.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
