Article
Chemistry, Physical
Yuping Xu, Peisen Zhang, Shuming Jin, Chuang Liu, Lin Yang, Zhuo Ao, Meng Qin, Kaili Nie, Yi Hou, Mingyuan Gao
Summary: Plastic pollution is a significant issue that harms the ecosystem and human health. This study presents an innovative approach to optically track degraded microplastics using a model system composed of poly(L-lactic acid) and CuInS2@ZnS quantum dots. The results demonstrate that the microplastics are mainly absorbed by Gram-positive cocci.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Analytical
Shuangtian Dong, Dongyang Wang, Xuwen Gao, Li Fu, Jingna Jia, Yuqi Xu, Bin Zhang, Guizheng Zou
Summary: This study proposes a method to achieve chemiluminescence with different wavelengths and intensities by adjusting triggering agents, which shows promising potential for applications in immunoassays and other fields.
ANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Electrical & Electronic
Yuan Liu, Cong Zhao, Jingzhou Li, Shixi Zhao, Xiaomin Xu, H. Y. Fu, Cunjiang Yu, Feiyu Kang, Guodan Wei
Summary: The high-performance photodetectors based on environmentally benign CuInS2/ZnS core-shell quantum dots, in combination with organic blend films, achieve efficient energy transfer and charge separation, leading to low dark current and high detectivity. This work demonstrates a feasible strategy to develop highly sensitive photodetectors using heavy-metal-free core-shell quantum dots.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Analytical
Zhipeng Li, Xunxun Deng, Shuo Wu, Shuangtian Dong, Guizheng Zou
Summary: A near-infrared (NIR) aqueous chemiluminescence (CL) strategy using CuInS2@ZnS nanocrystals (CIS@ZnS NCs) was proposed, achieving efficient NIR CL and successfully applied in constructing biosensors, indicating its promising potential for bioassays.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Li Jun Lim, Xiaofei Zhao, Zhi-Kuang Tan
Summary: This work presents a facile synthesis method for near-infrared (NIR) emitting CuInS2/ZnS quantum dots (QDs). By using two sulfur precursors, 1-dodecanethiol (DDT) and hexamethyldisilathiane (HMDS), the reactive HMDS promotes faster nucleation and leads to a higher density of Cu-deficiency sites, resulting in QDs with high photoluminescence quantum efficiency (PLQE) of 65% at a long emission wavelength of 920 nm. NIR light-emitting diodes (LED) fabricated using these QDs achieve an external quantum efficiency (EQE) of 8.2%, comparable to the best reported PbS and InAs QD LEDs, and with an emission wavelength surpassing that of lead iodide perovskites. This work represents one of the first efficient NIR LEDs based on environmentally benign CuInS2 QDs, potentially enabling promising new applications in consumer electronic products.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shyan Thompson, Dae Kun Hwang
Summary: Recent attention has been focused on the generation of water-in-water droplets for biological applications due to their high biocompatibility. A new passive cross-flow configuration microfluidic device has been developed to generate monodispersed ATPS droplets, capable of three controlled droplet formations simultaneously with a wide range of droplet diameters.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Spectroscopy
Xiaoping Chen, Jianwei Lin, Yafeng Zhuang, Siqi Huang, Jinghua Chen, Zhizhong Han
Summary: A new ratiometric fluorescence sensor is developed for the selective detection of chlorotetracycline (CTC) using dual-mode fluorescence method, demonstrating good selectivity and sensitivity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Multidisciplinary
Jing Zhu, Jingyi Zhang, Ruiming Lin, Benwei Fu, Chengyi Song, Wen Shang, Peng Tao, Tao Deng
Summary: The study demonstrates a rapid and scalable microwave heating-based method for preparing Ti3C2Tx MXenes, which significantly reduces synthesis time and produces nanosheets with superior performance.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Iurii Alekseevich Babkin, Aniket Pradip Udepurkar, Hannes Van Avermaet, Rodrigo de Oliveira-Silva, Dimitrios Sakellariou, Zeger Hens, Guy van den Mooter, Simon Kuhn, Christian Clasen
Summary: Quantum dots (QDs) are semiconductor nanocrystals used in optoelectronic applications. Most modern QDs are based on toxic metals and do not comply with EU regulations. However, there are promising developments in safer QD alternatives based on elements from the III-V group. This study focuses on encapsulating InP-based QDs in polymer microbeads for improved photostability.
Article
Chemistry, Multidisciplinary
Yazhi Zheng, Hanxu Chen, Xiang Lin, Minli Li, Yuanjin Zhao, Luoran Shang
Summary: Drug microcarriers were prepared using a microfluidic step emulsification method, which allows for high-throughput production of droplets and hydrogel microparticles. The microparticles encapsulated basic fibroblast growth factor (bFGF) and incorporated black phosphorus (BP) for controllable release via near-infrared (NIR) stimulation. These microparticles serve as drug carriers to induce angiogenesis and collagen deposition, promoting wound repair. These findings suggest that the step emulsification technique has the potential to provide scalable production of drug microcarriers for wound healing and tissue regeneration.
Article
Chemistry, Multidisciplinary
Ge Li, Hao Li, Jiang Zhai, Jiazhuang Guo, Qing Li, Cai-Feng Wang, Su Chen
Summary: A visual microfluidic detection platform using CdTe quantum dots was developed for rapid and sensitive detection of veterinary drugs. The CdTe QDs showed selective fluorescence response to specific veterinary drugs, with different ligands displaying varying degrees of response. The platform offers simple operation, low cost, rapid sensing, and good sensitivity for quantitative detection of veterinary drug residues.
Article
Neurosciences
Dahui Xue, Wenyi Zou, Dongmeng Liu, Li Li, Tingting Chen, Zhiwen Yang, Yajing Chen, Xiaomei Wang, Wencan Lu, Guimiao Lin
Summary: The CuInS2/ZnS quantum dots can enter U87 cells without reducing cell viability, but can significantly alter the gene expression profile.
Article
Materials Science, Multidisciplinary
Jose Varghese Rajendran, Sundararajan Parani, Vasudevan Pillay R. Remya, Thabang C. Lebepe, Rodney Maluleke, Olanrewaju A. Aladesuyi, Sabu Thomas, Oluwatobi Samuel Oluwafemi
Summary: This study reports the synthesis of gelatin-stabilized mesoporous silica encapsulated CuInS2/ZnS quantum dots composites, which exhibit improved quantum yield and high photostability. The long-term stability of the composite is greatly enhanced after gelatin modification. The cytotoxicity assay demonstrates good viability against A549 cell line and dose-dependent viability against Hela cell line.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Spectroscopy
Sara Safari, Ahmad Amiri, Alireza Badiei
Summary: In this work, an efficient core-shell fluorescent quantum dots (QDs) probe based on CuInS2 (CIS) core and ZnS shell with the formula of CIS@ZnS QDs was synthesized and characterized. The probe shows a remarkable fluorescence response toward Aspartic Acid (Asp).
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Polymer Science
Jose Varghese Rajendran, Sundararajan Parani, Vasudevan Pillay R. Remya, Thabang C. C. Lebepe, Rodney Maluleke, Olanrewaju A. A. Aladesuyi, Sabu Thomas, Oluwatobi Samuel Oluwafemi
Summary: Researchers developed a novel system composed of gelatin stabilized, mesoporous silica SBA15 encapsulated CuInS2/ZnS quantum dots (QDs) conjugated with beta-cyclodextrin (beta-CDs) for efficient release of the anticancer drug camptothecin (CPT). The system demonstrated excellent fluorescence properties, high photostability, and a drug release profile following the triphasic model. The beta-CD conjugated Gel-SBA15-CIS/ZnS QD nanocomposite holds great promise for both imaging and therapeutic applications.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Review
Biochemistry & Molecular Biology
Miriam Linsenmeier, Marie R. G. Kopp, Stavros Stavrakis, Andrew de Mello, Paolo Arosio
Summary: The increasing evidence shows that membraneless organelles are essential in cellular organization, and the physico-chemical rules underlying their assembly and functions still need further exploration. Microfluidic technologies are attractive tools for analyzing biomolecular phase transitions, providing high-throughput measurements and precise control over self-assembly in time and space.
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Xiaobao Cao, Ying Du, Yujia Guo, Guohang Hu, Ming Zhang, Lu Wang, Jiangtao Zhou, Quan Gao, Peter Fischer, Jing Wang, Stavros Stavrakis, Andrew DeMello
Summary: This study utilizes two-photon laser lithography to fabricate bioinspired bigrating nanostructures, whose optical properties can be controlled by varying the height and period. The research achieves excellent spectral characteristics and high color purity over the entire visible range through combined effects of multilayer interference and diffraction. Such tuneable bigrating structures are of significant utility in color filtering applications.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Justina Rutkauskaite, Simon Berger, Stavros Stavrakis, Oliver Dressler, John Heyman, Xavier Casadevall i Solvas, Andrew deMello, Linas Mazutis
Summary: In this study, a droplet microfluidic approach was developed for high-throughput screening and sorting of antibody-secreting cells. The method utilizes Forster resonance electron transfer (FRET) signal to mediate the binding of antibodies and probes, enabling functional characterization of individual cells. The system efficiently screens antigen-specific cells and provides important data on antibody secretion rate and membrane-bound fraction.
Article
Chemistry, Analytical
Prerit Mathur, Anna Fomitcheva Khartchenko, Stavros Stavrakis, Govind V. Kaigala, Andrew J. deMello
Summary: We developed a method for monitoring localized antigen-antibody binding on cell and tissue sections using fluorescence lifetime imaging. By measuring the difference in fluorescence decay times of tagged antibodies in free solution and in the bound state, we can track the binding fraction over time and determine the binding kinetics. This method allows us to measure binding constants and observe biomarker expression effects on kinetics.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Rashin Mohammadi, Mohammad Asghari, Monika Colombo, Zahra Vaezi, Daniel A. Richards, Stavros Stavrakis, Hossein Naderi-Manesh, Andrew DeMello
Summary: This study presents the design and optimization of a microfluidic device that can automatically isolate circulating tumor cells (CTCs) from whole blood, which is challenging due to the low concentration of CTCs and their mixture with other blood components. The device achieves separation through passive viscoelastic separation and subsequent active magnetophoretic separation. Magnetic biosilica frustules are used for tagging and magnetic isolation of CTCs. The platform demonstrates high recovery and purity of CTCs.
Article
Chemistry, Analytical
Yanming Xia, Chao Song, Yingchao Meng, Peng Xue, Andrew J. deMello, Quan Gao, Stavros Stavrakis, Shenglin Ma, Xiaobao Cao
Summary: Centrifugal microfluidic platforms integrate and perform complex biological and chemical processes within disc-like substrates and valving using centrifugal forces and the Coriolis effect. Researchers have developed and tested an addressable electrowetting centrifugal (EWC) valve, which can be triggered to open by altering its wettability through an external electric field. The valve demonstrates good performance in multiple operations on different fluid samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Alessia Villois, Umberto Capasso Palmiero, Prerit Mathur, Gaia Perone, Timo Schneider, Lunna Li, Matteo Salvalaglio, Andrew deMello, Stavros Stavrakis, Paolo Arosio
Summary: This study provides an experimental and theoretical framework to investigate the thermodynamics and kinetics of liquid-liquid phase separation. It leverages droplet microfluidics to accurately measure the volume of the dense phase and predicts and validates kinetic barriers associated with the formation of a dense droplet.
Article
Chemistry, Analytical
Tianjin Yang, Alessia Villois, Antonin Kunka, Fulvio Grigolato, Paolo Arosio, Zbynek Prokop, Andrew deMello, Stavros Stavrakis
Summary: Protein folding, unfolding, and aggregation play important roles in biological processes, and are closely related to protein misfolding diseases. Researchers have developed a temperature-controlled microfluidic platform that allows measurement of reaction kinetics on a millisecond to second timescale, and can be used to study fast biomolecular kinetics at high temperatures. The platform has been successfully applied to investigate the unfolding kinetics of haloalkane dehalogenases and the elongation of fibrils composed of the amyloid beta peptide associated with Alzheimer's disease.
ANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Tian Xue, Ankit Jain, Xiaobao Cao, David Hess, Stavros Stavrakis, Andrew de Mello
Summary: This article describes a valve-based droplet-on-demand generator that can generate femtoliter-volume water-in-oil droplets stably under controlled conditions. This method allows for high-precision droplet dilution and programmable droplet pairing/merging operations, as well as rapid low-volume titrations. Therefore, this generator enables a range of automated and multi-step droplet-based manipulations.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Review
Biotechnology & Applied Microbiology
Michal Vasina, David Kovar, Jiri Damborsky, Yun Ding, Tianjin Yang, Andrew deMello, Stanislav Mazurenko, Stavros Stavrakis, Zbynek Prokop
Summary: Nowadays, there is a growing demand for novel biotechnological products, and biocatalytic applications are playing a vital role in providing sustainable alternatives to chemical processes. However, the characterization of enzyme variants for industrial processes remains a limiting factor. While there are a few microfluidic systems available for enzyme analysis, the transformation of prototypes into commercial platforms needs to be streamlined. This review discusses the state-of-the-art microfluidic tools for the analysis of biocatalysts, their advantages, disadvantages, and potential for leveraging machine learning.
BIOTECHNOLOGY ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Neal Munyebvu, Julia Nette, Stavros Stavrakis, Philip D. Howes, Andrew J. deMello
Summary: Microfluidic methods enable the synthesis of nanomaterials with high quality products and outstanding properties. The ability to control heat and mass transfer in a rapid and precise manner, as well as the integration of in-line characterization tools and machine learning algorithms, contribute to the exquisite control over material properties during synthesis and the optimization of electronic and optical properties. Microfluidic technologies also offer new insights into the optoelectronic properties of nanomaterials.
Article
Biochemical Research Methods
Xiaobao Cao, Tomas Buryska, Tianjin Yang, Jing Wang, Peter Fischer, Aaron Streets, Stavros Stavrakis, Andrew deMello
Summary: Droplet-based microfluidic systems have become popular in high throughput screening due to their flexibility, high-throughput capabilities, and efficient processing of small volumes. However, the challenges of performing customized operations on user-defined droplets have limited their use in complex screening applications. To address this, the integration of droplet- and valve-based microfluidic technologies provides a solution for controlling droplet manipulations while maintaining analytical throughput. This article presents a microfluidic platform that combines microvalve technology with droplet-based compartmentalization to achieve programmable fluid handling. The platform allows for the execution of user-defined reaction protocols within storage chambers by merging droplets containing specified reagents.
Article
Chemistry, Physical
Michal Vasina, Pavel Vanacek, Jiri Hon, David Kovar, Hana Faldynova, Antonin Kunka, Tomas Buryska, Christoffel P. S. Badenhorst, Stanislav Mazurenko, David Bednar, Stavros Stavrakis, Uwe T. Bornscheuer, Andrew DeMello, Jiri Damborsky, Zbynek Prokop
Summary: In this study, a combination of next-generation sequencing and microfluidic enzymology was used to identify efficient and robust haloalkane dehalogenases. A total of 2,905 putative dehalogenases were identified through bioinformatics analysis, and a small set of 45 genes were prioritized. Among these genes, 40 active enzymes were obtained, and 24 of them were characterized using microfluidic enzymology techniques. The results revealed valuable mechanistic insights and demonstrated the potential of this pipeline for accelerating the discovery of efficient biocatalysts for industrial use.
Article
Multidisciplinary Sciences
Bogdan Mateescu, Jennifer C. Jones, Roger P. Alexander, Eric Alsop, Ji Yeong An, Mohammad Asghari, Alex Boomgarden, Laura Bouchareychas, Alfonso Cayota, Hsueh-Chia Chang, Al Charest, Daniel T. Chiu, Robert J. Coffey, Saumya Das, Peter De Hoff, Andrew de Mello, Crislyn D'Souza-Schorey, David Elashoff, Kiarash R. Eliato, Jeffrey L. Franklin, David J. Galas, Mark B. Gerstein, Ionita H. Ghiran, David B. Go, Stephen Gould, Tristan R. Grogan, James N. Higginbotham, Florian Hladik, Tony Jun Huang, Xiaoye Huo, Elizabeth Hutchins, Dennis K. Jeppesen, Tijana Jovanovic-Talisman, Betty Y. S. Kim, Sung Kim, Kyoung-Mee Kim, Yong Kim, Robert R. Kitchen, Vaughan Knouse, Emily L. LaPlante, Carlito B. Lebrilla, L. James Lee, Kathleen M. Lennon, Guoping Li, Feng Li, Tieyi Li, Tao Liu, Zirui Liu, Adam L. Maddox, Kyle McCarthy, Bessie Meechoovet, Nalin Maniya, Yingchao Meng, Aleksandar Milosavljevic, Byoung-Hoon Min, Amber Morey, Martin Ng, John Nolan, Getulio P. De Oliveira Junior, Michael E. Paulaitis, Tuan Anh Phu, Robert L. Raffai, Matthew E. Roth, David A. Routenberg, Joel Rozowsky, Joseph Rufo, Satyajyoti Senapati, Sigal Shachar, Himani Sharma, Anil K. Sood, Stavros Stavrakis, Alessandra Sturchler, Muneesh Tewari, Juan P. Tosar, Alexander K. Tucker-Schwartz, Andrey Turchinovich, Nedyalka Valkov, Kendall Van Keuren-Jensen, Kasey C. Vickers, Lucia Vojtech, Wyatt N. Vreeland, Ceming Wang, Kai Wang, ZeYu Wang, Joshua A. Welsh, Kenneth W. Witwer, David T. W. Wong, Jianping Xia, Ya-Hong Xie, Kaichun Yang, Mikolaj P. Zaborowski, Chenguang Zhang, Qin Zhang, Angela M. Zivkovic, Louise C. Laurent
Summary: The extracellular RNA communication consortium (ERCC) is a NIH-funded program that aims to advance the development of new technologies, resources, and knowledge about exRNAs and their carriers. Through its second phase (ERCC2), the program focuses on addressing important gaps in knowledge and technology, as well as promoting collaboration between ERCC2 members and the scientific community. The ultimate goal is to enhance our understanding of exRNA biology and improve the development of accurate and efficient exRNA-based diagnostic methods.
Article
Meteorology & Atmospheric Sciences
Florin N. Isenrich, Nadia Shardt, Michael Rosch, Julia Nette, Stavros Stavrakis, Claudia Marcolli, Zamin A. Kanji, Andrew J. DeMello, Ulrike Lohmann
Summary: Ice nucleation is a crucial process in determining cloud properties and lifetime. Microfluidic systems and the new instrument MINCZ play a significant role in obtaining parameterizations and understanding the contributions to ice nucleation. MINCZ has been validated for measuring freezing temperatures and will be used for further research on ice nucleation behavior.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2022)
Article
Materials Science, Multidisciplinary
Mengjiao Dong, Liyun Liao, Chensheng Li, Yingxiao Mu, Yanping Huo, Zhong-Min Su, Fushun Liang
Summary: This study investigates the influence of the polarity of polymer matrices on persistent room-temperature phosphorescence (pRTP). It is discovered that intense phosphorescence emission can be achieved in highly polar matrices such as polyacrylic acid (PAA). The dipole-dipole interaction between the polar fluorophore and polar matrix is proposed to stabilize the excited state and facilitate the generation of efficient room-temperature phosphorescence emissions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Han-Jiang Yang, Weijia Xiang, Xiangzhou Zhang, Jin-Yun Wang, Liang-Jin Xu, Zhong-Ning Chen
Summary: This article reports a 2D copper(I)-based cluster material for X-ray imaging, which exhibits ultra-high spatial resolution, high photoluminescence efficiency, and low detection limit. The material shows excellent linear response to X-ray dose rates and light output, and has the best spatial resolution among reported lead-free metal halide hybrids.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Review
Materials Science, Multidisciplinary
Taek Joon Kim, Sang-hun Lee, Dayeong Kwon, Jinsoo Joo
Summary: Donor-acceptor heterostructures using organic-inorganic halide perovskites, two-dimensional transition metal dichalcogenides, pi-conjugated organic small/macro molecules, and quantum dots are promising platforms for exciton-based photonics and optoelectronics. Hetero-interlayer excitons and hetero-intermolecular excitons formed through optical and/or electrical charge transfer in various heterostructures are important quasi-particles for light emission, detection, and harvesting systems.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Liemao Cao, Xiaohui Deng, Zhen-kun Tang, Rui Tan, Yee Sin Ang
Summary: We investigate the interface properties between WSi2N4 and Mo2B, O-modified Mo2B, and OH-modified Mo2B nanosheets. We find that WSi2N4 and Mo2B form n-type Schottky contacts, while functionalizing Mo2B with O and OH leads to the formation of both n-type and p-type ohmic contacts with WSi2N4. Additionally, we demonstrate the emergence of quasi-ohmic contact with ultralow lateral Schottky barrier and zero vertical interfacial tunneling barriers in Mo2B(OH)2-contacted WSi2N4.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ga Eun Kim, Hae-Jin Kim, Heesuk Jung, Minwoo Park
Summary: This study presents a solution to the commercialization challenges of flexible LEDs based on MAPbBr(3) by incorporating polyurethane and an In-Ga-Zn-Sn liquid alloy. The designed devices showed high flexibility, efficiency, and durability, with improved electron injection and reduced defects, making them promising for next-generation displays.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tao Shen, Zeng Wu, Zhen Jiang, Dongsheng Yan, Yan Zhao, Yang Wang, Yunqi Liu
Summary: Sidechain engineering is an important molecular design strategy for tuning the solid-state packing and structural ordering of conjugated polymers. The effects of sidechain direction on the optoelectronic properties of polymers and device performance were systematically investigated in this study. The results demonstrate that tuning the sidechain substitution direction can effectively improve the molecular structure and light absorption properties of polymers, providing new insights for the rational design of functional polymers.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Lotte Clinckemalie, Bapi Pradhan, Roel Vanden Brande, Heng Zhang, Jonathan Vandenwijngaerden, Rafikul Ali Saha, Giacomo Romolini, Li Sun, Dirk Vandenbroucke, Mischa Bonn, Hai I. Wang, Elke Debroye
Summary: In this study, a facile strategy using a non-conductive polymer was proposed to fabricate stable, pinhole-free thick films. The effect of introducing a second phase into CsPbBr3 perovskite crystals on their photophysical properties and charge transport was investigated. The dual phase devices exhibited improved stability and more effective operation at higher voltages in X-ray detection.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jingye Zou, Shenglan Hao, Pascale Gemeiner, Nicolas Guiblin, Omar Ibder, Brahim Dkhil, Charles Paillard
Summary: When rare-earth ions are embedded in a ferroelectric material, their photoluminescence can serve as an all-optical probe for temperature, electric field, and mechanical stimulus. However, the impact of ferroelectric phase transitions on photoluminescence is not well understood. In this study, we demonstrate changes in the photoluminescence of green emission bands during critical ferroelectric transitions in an Er-doped BaTiO3 material. We also find that the intensity ratio and wavelength position difference of sub-peaks provide information on the phase transitions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jiangchao Han, Daming Zhou, Wei Yang, Chen Lv, Xinhe Wang, Guodong Wei, Weisheng Zhao, Xiaoyang Lin, Shengbo Sang
Summary: Rare type-II spin-gapless semiconductors (SGSs) have attracted increasing attention due to their unique spin properties. In this study, the interface contacts and spin transport properties of different devices composed of VSi2P4 ferromagnetic layers were investigated. The results show that VSi2P4 is a promising material for designing vertical van der Waals heterostructures with a giant tunnel magnetoresistance (TMR) in spintronic applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tianqi Zhao, Renagul Abdurahman, Qianting Yang, Ruxiangul Aiwaili, Xue-Bo Yin
Summary: In this study, we designed and prepared Cr and Ba-doped gamma-Ga2O3 nanoparticles to achieve near-infrared emission and enhance the emission intensity. The emission mechanism was proposed based on the trap depth, band gap, and energy levels of Cr ions. The ratiometric temperature sensing and encryption information transfer demonstrated the potential applications of this technology.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Shuvankar Gupta, Jyotirmoy Sau, Manoranjan Kumar, Chandan Mazumdar
Summary: In this study, a new spin-gapless semiconductor material CoFeMnSn is reported, and its stable structure and spin-polarized band structure are determined through experimental realization and theoretical calculations. The compound exhibits a high ferromagnetic transition temperature, making it excellent for room temperature applications. The nearly temperature-independent resistivity, conductivity, and carrier concentration of the compound, adherence to the Slater-Pauling rule, and the high intrinsic anomalous Hall conductivity achieved through hole doping further confirm its spin-gapless semiconductor nature. Additionally, the compound's SGS and topological properties make it suitable for spintronics and magneto-electronics devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ikumi Aratani, Yoji Horii, Yoshinori Kotani, Hitoshi Osawa, Hajime Tanida, Toshiaki Ina, Takeshi Watanabe, Yohko F. Yano, Akane Mizoguchi, Daisuke Takajo, Takashi Kajiwara
Summary: In this study, two-dimensional arrays of single-molecule magnets (SMMs) based on metal-organic frameworks (MOFs) were systematically modified through Langmuir-Blodgett methods and chemical modifications. The introduction of bulky alkoxide groups induced structural changes and perpendicular magnetic anisotropy. This research provides a promising strategy for the construction of high-density magnetic memory devices using molecular spintronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Zonghao Lei, Houhe Dong, Lijie Sun, Bing Teng, Yanfei Zou, Degao Zhong
Summary: Researchers have successfully developed four different up-conversion phosphors based on the Eulytite-type host Ba3Yb(PO4)(3). The optical temperature sensing properties of these phosphors were thoroughly investigated, and it was found that Ba3Yb(PO4)(3):Tm/Er/Ho showed potential for optical temperature measurement applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
C. Roncero-Barrero, M. A. Carvajal, J. Ribas-Arino, I. de P. R. Moreira, M. Deumal
Summary: This study computationally investigates the conductivity of four isostructural compounds with different Se contents, and reveals the parameters that define their conductivity in stable organic radical materials. The results provide insights into the influence of Se content on the conductivity and highlight the importance of considering multiple parameters in understanding the trends in conductivity.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Remi Arras, Kedar Sharma, Lionel Calmels
Summary: In this study, we investigated the interplay between structural defects in NiFe2O4, showing that the complex formed by a Ni-Oh/Fe-Td-cation swap and a neutral oxygen vacancy is more stable than these two isolated defects, and significantly reduces the width of the minority-spin band gap.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)