Article
Biophysics
Yi Pan, Xinlin Wei, Xiaodong Guo, Hui Wang, Haiyun Song, Canping Pan, Naifeng Xu
Summary: A dual-model colorimetric/fluorescent immune probe based on Au-Ag NCs and PEI-Au NPs was successfully constructed for rapid and ultrasensitive detection of DICO, with improved sensitivity in ic-ELISA method and a quantitative LOD in LFIA method. The fluorescence signal significantly enhanced the detection sensitivity in ic-ELISA method with a LOD of 0.62 ng/mL, while the fluorescence model detection in LFIA method achieved a quantitative LOD at the level of 1.59 ng/mL.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Cecilia Garcia-Guzman, Eden Morales-Narvaez, Eduardo Coutino-Gonzalez
Summary: The study demonstrates a biosensing platform capable of simultaneous capture and detection of biomolecules by embedding photoluminescent silver clusters in zeolites functionalized with antibodies. The formation of immunocomplex enhances the fluorescence response of the silver clusters, enabling a wash-free and quick biodetection system with optimal results obtained within 5 minutes. This research provides new insights for the development of innovative bioanalytical platforms, including real-time monitoring systems, point-of-care devices, and bioimaging techniques.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Analytical
Preeti Kukkar, Deepak Kukkar, Sherif A. Younis, Gurpreet Singh, Pritpal Singh, Soumen Basu, Ki-Hyun Kim
Summary: The nanoreactor synthesized in this study, encapsulating acetylcholinesterase, showed significantly improved catalytic activity and high sensitivity in detecting organophosphate pesticides.
MICROCHEMICAL JOURNAL
(2021)
Article
Physics, Applied
Yanfeng Wang, Zhengjun Zhang, Yiping Zhao
Summary: This study investigates the effect of moving the nanorod from the center to the edge of the nanohole, finding that breaking geometric symmetry can tune the resonant wavelength redshift of extraordinary optical transmission. Connecting the nanorod to the nanohole and increasing lattice period significantly redshifts the EOT mode, suitable for compact integrated optical device design.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Biochemical Research Methods
Do Yun Kong, Nam Su Heo, Ji Won Kang, Jin Bae Lee, Hae Jin Kim, Moon Il Kim
Summary: The new LFIA developed using cerium oxide nanoparticles as nanozymes shows promise for detecting C-reactive protein in human serum samples with high sensitivity and quantification capabilities. This demonstrates the potential for utilizing nanoceria in LFIA for rapid and accurate point-of-care testing applications.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Varsha UshaVipinachandran, Sathish Rajendran, Haydar Ali, Indhumathi Ashokan, Susanta Kumar Bhunia
Summary: As the usage of antibiotics and vitamin tablets becomes more widespread, a rapid colorimetric sensor has been developed for the selective recognition of neomycin and thiamine. The sensor utilizes citrate capped silver nanoparticles and exhibits excellent performance for the determination of these drugs at low concentrations. This sensor shows prolonged selectivity even in the presence of interfering drug mixtures and in real sample analysis.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Lixing Kang, Yan Zhang, Qian Gong, Chandreyee Manas Das, Huilin Shao, Daniel Puiu Poenar, Philippe Coquet, Ken-Tye Yong
Summary: This study presents the fabrication, testing, and performance of a plasmonic sensor using a gold nanohole array chip coated with WS2 for protein-protein interaction detection. The monoatomic layer deposition of WS2 and its functionalization significantly improved the sensor's performance, enhancing the limit of detection.
Article
Chemistry, Analytical
Hong Duan, Wuzhen Qi, Siyuan Wang, Lingyan Zheng, Jing Yuan, Jianhan Lin
Summary: In this study, a new colorimetric immunoassay was proposed for the rapid and sensitive screening of pathogens. The assay utilized the release of Ag+ ions from AgNPs and the inhibition of PtNPs. A microfluidic platform, controlled by Raspberry Pi and a smartphone app, was also developed for automated bacterial detection. The immunoassay showed high specificity, an ultralow detection limit, and good recovery for spiked chicken samples, showcasing its potential for ensuring food safety.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Younggeun Park, Byunghoon Ryu, Seung Jun Ki, Brendan McCracken, Amanda Pennington, Kevin R. Ward, Xiaogan Liang, Katsuo Kurabayashi
Summary: Enzymatic colorimetric analysis of metabolites can provide information about energy conversion and biosynthesis related to disease. Miniaturized photodetectors based on TMDCs offer sensitive enzymatic colorimetric detection for point-of-care diagnosis. Constructing TMDC photodetector arrays with consistent performance is crucial for optical signal detection in batched multi-sample assays.
Article
Chemistry, Analytical
Zhenyu Han, Chunyan Xia, Bao'an Ning, Zehua Xu, Xiao Liu, Hu Zuo, Lingchao Cai, Tieqiang Sun, Ying Liu
Summary: We developed a dual signal read-out enzyme-linked immunosorbent assay method for sensitive detection of Norfloxacin. The method utilizes a bifunctional ligand and enzymatic signal amplification system to achieve detection. It was successfully applied to detect veterinary drug residues in commercially available milk.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Younggeun Park, Byunghoon Ryu, Seung Jun Ki, Xiaogan Liang, Katsuo Kurabayashi
Summary: The study presents an ultrasensitive plasmonic biosensing method using a multilayer MoS2 channel for detecting low-abundance proteins in biofluids, which can quantify carcinoembryonic antigen in unprocessed whole blood with high sensitivity and a rapid detection time.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Chemistry, Applied
Yuanshang Wang, Pengfei Du, Am Abd El-Aty, Ge Chen, Huiyan Jia, Xueyan Cui, Emel Oz, Yudan Zhang, Xiuyuan Zhang, Guoxin Qin, Feiyan Yan, Jing Wang, Maojun Jin, Bruce D. Hammock
Summary: A novel visual method for detecting triazophos using competitive bio-barcode immunoassay was established, with a detection range between 0.05 and 10 ng/mL. The method showed high percent recovery and stability, offering a new insight for rapid detection of small molecule pesticides in various matrices.
Article
Chemistry, Analytical
Jing Li, Yansong Zhang, Xin Wang, Shenlong Zhang, Qingqing Tan, Bingtao Hu, Qin Xu, Hongbo Li
Summary: A DNA/RNA biosensor capable of SNV resolution is proposed, which utilizes an entropy-driven nanomachine and coordination etching of Ag TNPs for visualization. The dual-modal (multicolorimetric and photothermal) biosensor shows noticeable color changes that can be differentiated by naked eye and accurate temperature reading. The programmable DNA nanotechnology and magnetic extraction grant the high specificity, and the dual-modal biosensor has the advantages of portability, cost-effectiveness, and simplicity.
ANALYTICAL CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
George S. Luka, Ephraim Nowak, Quin Robert Toyata, Nishat Tasnim, Homayoun Najjaran, Mina Hoorfar
Summary: The study developed a portable, colorimetric biosensor for sensitive, selective, and label-free detection of Cryptosporidium RNA. This sensor eliminates the need for expensive laboratory equipment, instead performing colorimetric assays on a micro-fabricated chip in a 3D-printed holder assembly, with quantitative analysis done using a smartphone camera.
SCIENTIFIC REPORTS
(2021)
Article
Biotechnology & Applied Microbiology
Mohammad Rahbar, Yuling Wu, J. Anand Subramony, Guozhen Liu
Summary: A lateral flow assay was developed for colorimetric detection of IL-6, with silver amplification technique incorporated to enhance sensitive detection in the range of 5-1000 pg/mL. The method showed good specificity and reproducibility, demonstrating its reliability for quantitative measurement of IL-6 in a point-of-care manner.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Chemistry, Physical
Xinxin Xing, Tian Tong, Mohammadjavad Mohebinia, Dezhi Wang, Zhifeng Ren, Viktor G. Hadjiev, Zhiming Wang, Jiming Bao
Summary: By correlating X-ray diffraction with photoluminescence (PL) of CsCu2I3 single-crystal wires, this study first identifies the origin of blue PL at 420 nm and excludes defect states as the source for the broadband emission at 570 nm. The pressure evolutions of PL energy, intensity, and lifetime are explained using a model of the self-trapped exciton, and polarization-dependent Raman spectra confirm the crystal structure of CsCu2I3.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Yuhuan Fei, Tian Tong, Jiming Bao, Yun Hang Hu
Summary: Graphene is a fascinating two-dimensional material, but its easy restacking and zero band gap limit its practical applications. Through a new chemical reaction, we have successfully synthesized hierarchically three-dimensional hydrogenated graphene with large specific surface area and a band gap. These findings provide a new approach for developing graphene-based materials with tunable properties.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Multidisciplinary Sciences
Shuai Yue, Fei Tian, Xinyu Sui, Mohammadjavad Mohebinia, Xianxin Wu, Tian Tong, Zhiming Wang, Bo Wu, Qing Zhang, Zhifeng Ren, Jiming Bao, Xinfeng Liu
Summary: Researchers used pump-probe transient reflectivity microscopy to monitor the diffusion of photoexcited carriers in semiconducting cubic boron arsenide (c-BAs) and obtained their mobility. The experiments revealed a high ambipolar mobility for c-BAs, indicating its potential applications in high-performance electronics and optoelectronics.
Article
Energy & Fuels
Sara Pouladi, Carlos Favela, Weijie Wang, Mina Moradnia, Nam-In Kim, Shahab Shervin, Jie Chen, Sahil Sharma, Guang Yang, Manh-Cuong Nguyen, Rino Choi, Jiyoung Kim, Anastasiia Fedorenko, Brandon Bogner, Jiming Bao, Seth M. Hubbard, Venkat Selvamanickam, Jae-Hyun Ryou
Summary: In this study, a new flexible single-crystal-like GaAs thin-film photovoltaic solar cell was developed, and its power conversion efficiency was improved by treating the defect states. The results showed that the defect states at the low-angle grain boundaries could be partially passivated by treating with trioctylphosphine sulfide solution, leading to significant improvements in the cell performance parameters and the possibility of achieving a power conversion efficiency higher than 20%.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Physical
Cristal Solares-Bockmon, Aniqa Ibnat Lim, Mohammadjavad Mohebinia, Xinxin Xing, Tian Tong, Xingpeng Li, Steven Baldelli, T. R. Lee, Wei Wang, Zhaoping Liu, Jiming Bao
Summary: Despite the accepted charge-discharge theory for AC generation from a moving droplet, this study shows that the theory cannot explain the reversal of current when water-metal interfaces switch from dynamic to static. A generalized theory is proposed that explains the photovoltaic-like effect for all dynamic junctions, leading to an understanding and design of efficient electricity generation based on interfacial charge transfer.
Article
Chemistry, Analytical
Guang Yang, Yaxi Li, Chenling Tang, Feng Lin, Tianfu Wu, Jiming Bao
Summary: A smartphone-based application was developed in this study for the analysis of signals from protein microarrays to quantify disease biomarkers. The application, using fast data processing and fluorescence intensity quantification techniques, provides multiple user functions including reading, analyzing, calculating, and reporting. The efficacy of the application was verified through testing antigens and showed a high correlation with standard tests. This smartphone application tool shows promise for cheap, efficient, and portable on-site detection in point-of-care diagnostics.
Article
Chemistry, Multidisciplinary
M. Mohebinia, X. Xing, G. Yang, D. Wang, C. Solares-Bockmon, Z. Ren, J. Bao
Summary: Enhancing water oxidation through the introduction of an oxygen evolution reaction (OER) cocatalyst improves the efficiency of photocatalytic synthesis of ammonia. In this study, cobalt oxyhydroxide was employed as an OER cocatalyst to enhance ammonia generation, and a significant improvement in the ammonia production rate was achieved. The correlation between OER from water and ammonia generation was observed, indicating the potential of this strategy for better N-2 fixation photocatalyst design.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Tian Tong, Shuai Yue, Runjia Li, Feng Lin, Di Chen, Xinxin Xing, Wei-Kan Chu, Gangbing Song, Dong Liu, Zhiming Wang, Jiming Bao
Summary: The study demonstrates that a versatile microfluidic pump can be created using laser streaming from an optical fiber, and laser streaming can also be generated from a flat metal surface without the need for any fabrication process. High-speed imaging and computational fluid dynamics simulations were employed to confirm the photoacoustic principle of laser streaming. The potential of laser streaming for microfluidic and optofluidic applications was demonstrated by successfully driving fluid inside a capillary tube.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Physical
Yuhuan Fei, Tian Tong, Jiming Bao, Yun Hang Hu
Summary: This study reports the unprecedented embedding of sodium hydride (NaH) inside graphene nanobubbles through the reaction between NaH and CO. Using the graphene nanobubble as a nanoreactor, the decomposition process of graphene-covered NaH under electron beam was directly observed and the decomposition mechanism was revealed. This can provide guidance for the design of hydrogen storage materials.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Amanda L. L. Coughlin, Zhiliang Pan, Jeonghoon Hong, Tongxie Zhang, Xun Zhan, Wenqian Wu, Dongyue Xie, Tian Tong, Thomas Ruch, Jean J. J. Heremans, Jiming Bao, Herbert A. A. Fertig, Jian Wang, Jeongwoo Kim, Hanyu Zhu, Deyu Li, Shixiong Zhang
Summary: Enhancement of electron correlation in a topological metal, iridium dioxide, is demonstrated through vanadium doping. The increase in electron correlation is supported by Raman intensity decrease and increased electrical resistivity. The doping also leads to a significant reduction in lattice thermal conductivity. Density functional theory calculations suggest that the reduction in thermal conductivity is due to complex phonon dispersion and reduced energy gap between phonon branches.
Article
Materials Science, Multidisciplinary
Chaofu Zhou, Feng Lin, Yongliang Tang, Yu Liu, Xin Luo, Yu Qi, Songzi Xu, Yunao Qiu, Hongzhen Yan, Xin Tong, Arup Neogi, Zhaoping Liu, Xufeng Zhou, Chong Wang, Jiming Bao, Zhiming Wang
Summary: Graphene nanosheets (GNS) have been considered as excellent fillers in polymers for electromagnetic interference (EMI) shielding composites. However, preparing well-dispersed and highly aligned GNS for optimal EMI shielding is still a challenge. We have developed a new technology that allows uniform alignment of GNS in polymer composites in any direction, and enables systematic tuning of the composites for optimal EMI performance.
MATERIALS TODAY PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Shenyu Dai, Xinxin Xing, Viktor G. Hadjiev, Zhaojun Qin, Tian Tong, Guang Yang, Chong Wang, Lijuan Hou, Liangzi Deng, Zhiming Wang, Guoying Feng, Jiming Bao
Summary: In this study, a theoretical model is proposed to predict the effect of hydrostatic pressure on the emission spectrum of self-trapped excitons (STE). The extremely broadband photoluminescence emission and its wide pressure spectral tuning are observed in 2D indirect bandgap CsPb(2)Br(5) crystals, and the experimental results are in good agreement with the theoretical predictions. Further analysis reveals the involvement of two types of STE and their different responses to external pressure. The investigation of published STE emissions shows a spectral blue-shift under pressure, consistent with the theoretical predictions.
MATERIALS TODAY PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Shruti Hariyani, Xinxin Xing, Mahdi Amachraa, Jiming Bao, Shyue Ping Ong, Jakoah Brgoch
Summary: The invention of InGaN blue LED backlighting has revolutionized computers, televisions, and smartphones. However, prolonged exposure to the intense blue light emission from these displays can lead to insomnia and mood disorders. This study presents a new oxynitride phosphor, K3AlP3O9N:Eu2+, which exhibits a narrow and efficient blue photoluminescence upon violet excitation. By combining this phosphor with red- and green-emitting phosphors, it allows for access to approximately 10% more colors than a commercial tablet. This development has the potential to create next-generation, human-centric displays by reducing blue light emissions.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jiabin Liu, Shuai Yue, Hui Zhang, Chao Wang, David Barba, Francois Vidal, Shuhui Sun, Zhiming M. M. Wang, Jiming Bao, Haiguang Zhao, Gurpreet Singh Selopal, Federico Rosei
Summary: In this study, giant InP/ZnSe core/shell quantum dots (QDs) with tunable ZnSe shell thickness were synthesized to investigate the effect of the shell thickness on the optoelectronic properties and photoelectrochemical (PEC) performance. The results showed that the growth of ZnSe shell facilitated the delocalization of electrons and holes into the shell region and acted as a passivation layer to protect the surface of InP QDs while extracting photoexcited electrons and holes. Therefore, engineering the ZnSe shell thickness is crucial for tuning the optoelectronic properties of giant InP/ZnSe core/shell QDs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Hong Zhong, Fengjiao Pan, Shuai Yue, Chengzhen Qin, Viktor Hadjiev, Fei Tian, Xinfeng Liu, Feng Lin, Zhiming Wang, Jiming Bao
Summary: This paper discusses the application of the Tauc plot in determining the bandgap of semiconductors and identifies baseline absorption as the cause of discrepancies between two different extrapolations. By simulating Tauc plots with varying levels of baseline absorption, the study demonstrates that both extrapolation methods can lead to significant errors. A new method is proposed and experimentally verified to idealize the absorption spectrum by removing its baseline before constructing the Tauc plot. This new method is applied to cubic boron arsenide (c-BAs), resolves its bandgap discrepancies, and obtains a converging bandgap of 1.835 eV based on both previous and new transmission spectra. The method is applicable to both indirect and direct bandgap semiconductors with absorption spectrum measured via transmission or diffuse reflectance, and is essential for obtaining accurate values of their bandgaps.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
