Article
Physics, Applied
Hiroyuki Sazawa, Hirotaka Yamaguchi
Summary: We grew a single-domain 3C layer on a step-controlled C-face 4H-SiC substrate to create a 3C/4H-SiC heterostructure. The use of such a substrate demonstrated the effectiveness of growing a thin highly crystalline single-domain 3C layer. The heterostructure displayed an electron Hall mobility of 7224 cm(2)/V s at 32 K, which is significantly higher than previous reports and can be attributed to single-domain formation. The constant sheet carrier density and high mobility in a wide temperature range suggest conduction in a two-dimensional electron gas, highlighting the potential of C-face 3C/4H heterostructures for high electron mobility transistor applications.
APPLIED PHYSICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Akio Uesugi, Shinya Nakata, Kodai Inoyama, Koji Sugano, Yoshitada Isono
Summary: This study investigates the effects of surface potential on the carrier mobility and piezoresistance of core-shell silicon carbide nanowires (SiC NWs) for small and sensitive SiC-microelectromechanical systems sensors. It is found that the electric field induced by the fixed oxide charge can determine both the electrical conduction and the charge carriers in the NWs. Additionally, the piezoresistive effect is enhanced by the electric field of the dielectric.
Article
Materials Science, Multidisciplinary
Cher Tian Ser, Adrian Matthew Mak, Tomasz Wejrzanowski, Teck Leong Tan
Summary: The study investigates the piezoresistive properties of doped-SiC using density functional theory and Boltzmann Transport calculations, identifying Ru as a dopant that leads to a 4-fold increase in gauge factor under strain. Additionally, Mo and Pt show potential for high-temperature applications with their gauge factors increasing with temperature.
COMPUTATIONAL MATERIALS SCIENCE
(2021)
Article
Polymer Science
Jose Antonio Gonzalez-Mijangos, Enrique Lima, Roberto Guerra-Gonzalez, Fernando Iguazu Ramirez-Zavaleta, Jose Luis Rivera
Summary: The mechanical stability of nanothin free-standing films made of melted polyethylene chains was predicted through molecular dynamics simulations. The critical thickness increased with temperature and additional chains were required as the temperature rose. Within a specific temperature range, the nanothin films showed stability in terms of thickness, with the density and interfacial properties remaining independent of the film thickness. Additionally, the polyethylene layer at its critical thickness exhibited a lower melting temperature compared to bulk polyethylene.
Article
Materials Science, Multidisciplinary
M. Agati, S. Boninelli, C. Calabretta, F. Mancarella, M. Mauceri, D. Crippa, M. Albani, R. Bergamaschini, L. Miglio, F. La Via
Summary: This paper investigates the morphology and microstructural properties of thick [1 1 1]-oriented 3C-SiC films epitaxially grown on T-shaped Si micropillars. The study examines crystallographic defects in the film and analyzes the impact of crystal quality on potential applications in high-performance microelectronic devices.
MATERIALS & DESIGN
(2021)
Article
Engineering, Electrical & Electronic
Takaya Sugiura, Naoki Takahashi, Ryohei Sakota, Kazunori Matsuda, Nobuhiko Nakano
Summary: This study investigated the temperature-dependent piezoresistance issues of p-type doped 3C-silicon carbide (3C-SiC) materials. It proposed piezoresistance temperature models based on ionization energies to describe the phenomena at high temperatures. The study aimed to determine the ionization energy as a function of aluminum doping concentration. However, a significant decrease in the piezoresistive coefficient was observed at low temperatures, indicating a new phenomenon in low-temperature piezoresistance phenomena compared to conventional narrow band-gap materials like silicon or germanium.
IEEE JOURNAL OF THE ELECTRON DEVICES SOCIETY
(2022)
Article
Optics
Yanan Wang, Qiang Lin, Philip X-L Feng
Summary: The study proposes an integrated quantum photonic circuit using silicon carbide platform, achieving control of quantum states and frequency conversion through optimized design and functionality, providing design guidelines for future quantum information applications.
Article
Chemistry, Physical
Niklas Thoben, Thorsten Klu''ner
Summary: This study investigates the spatial and electronic structure of the Si-terminated surface of cubic silicon carbide (3C-SiC) and its p(2x1) reconstruction using restricted and unrestricted single- and multiconfigurational calculations. The results show that the unrestricted calculations allow for stronger reconstruction, while the multiconfigurational calculations reveal the important role of the bonding and antibonding surface states and the interaction of neighboring dimers. Additionally, the excited-state calculations suggest that both the p(2x1) and p(1x1) surfaces are semiconducting.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Andreea Bianca Serban, Vladimir Lucian Ene, Doru Dinescu, Iulia Zai, Nikolay Djourelov, Bogdan Stefan Vasile, Victor Leca
Summary: Various aspects of the GaN/AlN/SiC heterostructure, such as growth relations, interface consistency, and elemental diffusion, were studied using HR-TEM, HR-XRD, and DBS. Comparisons with previous work on Si and Al2O3 substrates revealed higher crystal quality and dislocation densities for GaN grown on SiC. The effective positron diffusion length for the GaN layer was also found to be higher using DBS measurements.
Article
Nanoscience & Nanotechnology
Hung Nguyen, Thanh Nguyen, Duy Van Nguyen, Hoang-Phuong Phan, Tuan Khoa Nguyen, Dzung Viet Dao, Nam-Trung Nguyen, John Bell, Toan Dinh
Summary: This paper reports a significant enhancement of the photovoltaic effect in a 3C-SiC/Si heterostructure under the impact of a temperature gradient. The enhanced photovoltage can improve the sensitivity and reduce the energy consumption of microsensors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Dan Shan, Daoyuan Sun, Mingjun Tang, Ruihong Yang, Guangzhen Kang, Tao Tao, Yunqing Cao
Summary: The transportation properties of Boron-doped Si nanocrystals embedded in amorphous SiC films were investigated by studying the temperature-dependent Hall effect measurements. With increasing Si/C ratio, the Hall mobilities, carrier concentrations, and conductivities in the films all showed an upward trend, reaching maximum values of 7.2 cm²/V, 4.6 x 10¹⁹ cm⁻³, and 87.5 S • cm⁻¹ respectively. Different carrier transport behaviors were identified within different temperature ranges in the films of various Si/C ratios.
Article
Engineering, Manufacturing
Weilong Wu, Yang Hu, Xiaosong Meng, Jianbo Dai, Houfu Dai
Summary: This study investigates the effects of ion implantation on the mechanical properties and defect evolution of single-crystal 3C-SiC. The results show that ion implantation reduces the hardness and elastic modulus and improves plasticity, while suppressing the nucleation of dislocations. The optimal implantation dose and energy can be determined by comparing the characteristics. Additionally, different implantation angles result in a channel effect. Ion implantation alters the direction and magnitude of normal stress, making it favorable for enhancing the plasticity of brittle single-crystal SiC through material advanced manufacturing processes.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Engineering, Electrical & Electronic
Tuan-Hung Nguyen, Thanh Nguyen, Abu Riduan Md Foisal, Tuan Anh Pham, Toan Dinh, Hong-Quan Nguyen, Erik W. Streed, Trung-Hieu Vu, Jarred Fastier-Wooller, Pablo Guzman Duran, Van Thanh Dau, Nguyen Nam-Trung, Dzung Viet Dao
Summary: This study presents a position-sensitive detector (PSD) based on the heterojunction formed between n-type SiC and p-type Si, utilizing the lateral photovoltaic effect (LPE) with a linear dependence on laser spot positions. The PSD demonstrates a position sensitivity of 554.82 mV/mm under zero bias conditions, making it one of the most sensitive LPE-based detectors to date. The influence of illumination intensity and wavelength on the position sensitivity is also investigated.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Multidisciplinary Sciences
Mingchao Xiao, Jie Liu, Chuan Liu, Guangchao Han, Yanjun Shi, Chunlei Li, Xi Zhang, Yuanyuan Hu, Zitong Liu, Xike Gao, Zhengxu Cai, Ji Liu, Yuanping Yi, Shuai Wang, Dong Wang, Wenping Hu, Yunqi Liu, Henning Sirringhaus, Lang Jiang
Summary: Bulk heterojunctions in organic photovoltaic devices have complex structures, but highly-ordered organic p-n junctions are desirable for studying the nature of organic heterojunctions. By using a design rationale, the authors successfully fabricated p-n heterojunctions based on monolayer molecular crystals.
NATURE COMMUNICATIONS
(2021)
Article
Crystallography
Rongyu Gao, Hongyu Cheng, Wenmao Li, Chenkai Deng, Jianguo Chen, Qing Wang, Hongyu Yu
Summary: In this study, a fast recovery vertical superjunction (SJ) MOSFET with n-Si and p-3C-SiC pillars was investigated. The introduction of a Schottky barrier diode (SBD) on the source contact at the top of the n-Si pillar improved the device reverse recovery. Additionally, the gate capacitance was reduced by introducing a thin p-base layer, enhancing the switching characteristics of the devices.
Article
Computer Science, Interdisciplinary Applications
Yong Zhu, Simon Howell
Summary: This paper presents the teaching approaches to foster independent learning in an undergraduate course in Electrical and Electronic Engineering. The use of the web-based circuit simulator CircuitLab was implemented for some laboratory tasks. Practical solutions were applied to bridge the learning achievement gap between formative assessments and summative examinations. Individual self-discovery projects were assigned to promote creative and independent learning, with a unique approach to prevent plagiarism based on student numbers. The scaffolding and self-discovery lab activities were successfully modified for online course delivery during the COVID-19 lockdown in 2020.
COMPUTER APPLICATIONS IN ENGINEERING EDUCATION
(2023)
Review
Materials Science, Biomaterials
Xiangxun Chen, Yuao Wu, Van Thanh Dau, Nam-Trung Nguyen, Hang Thu Ta
Summary: Biological drugs (BDs) have become increasingly important in treating various diseases, but their effectiveness is limited by challenges in administration, delivery, stability, and degradation. Nanotechnology, specifically polymeric nanomaterials, is being used to overcome these limitations. This review examines recent articles on manufacturing methods for encapsulating BDs in polymeric materials and analyzes the advantages and disadvantages of different strategies, such as emulsification, nanoprecipitation, self-encapsulation, and coaxial electrospraying. The impact of critical synthesis parameters on BD activity, such as sonication, is also explored, along with future challenges and perspectives for scale-up production and clinical translation.
BIOMATERIALS SCIENCE
(2023)
Review
Chemistry, Analytical
Aditya Vashi, Kamalalayam Rajan Sreejith, Nam-Trung Nguyen
Summary: Gravity is crucial for the development of life on earth. Reduced gravity experiments are usually conducted in the International Space Station, but its challenges have led to the development of ground-based devices and methods. However, more attention and research are still needed for the advantages of space conditions in developing new drugs, vaccines, and chemical applications.
Article
Nanoscience & Nanotechnology
Cong Thanh Nguyen, Dinh Gia Ninh, Tuan-Hung Nguyen, Trung-Hieu Vu, Dang D. H. Tran, Braiden Tong, Nam-Trung Nguyen, Van Thanh Dau, Dzung Viet Dao
Summary: This paper presents a new self-powered mechanical sensing technology based on vertical piezo-optoelectronic coupling. By applying mechanical stress or strain to the 3C-SiC/Si heterojunction, the photogenerated voltage can be changed. Experimental results demonstrate a highly linear relationship between strain and vertical photovoltage, increasing under tensile strain and decreasing under compressive strain. The proposed technology exhibits significantly larger strain sensitivities compared to lateral piezo-optoelectronic couplings reported in literature. The enhancement in strain sensitivity opens up possibilities for the development of ultra-sensitive and self-powered mechanical sensors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Thanh-An Truong, Tuan Khoa Nguyen, Xinghao Huang, Aditya Ashok, Sharda Yadav, Yoonseok Park, Mai Thanh Thai, Nhat-Khuong Nguyen, Hedieh Fallahi, Shuhua Peng, Sima Dimitrijev, Yi-Chin Toh, Yusuke Yamauchi, Chun Hui Wang, Nigel Hamilton Lovell, John Ashley Rogers, Thanh Nho Do, Nam-Trung Nguyen, Hangbo Zhao, Hoang-Phuong Phan
Summary: A stamping-free micromachining process is used to realize 3D flexible and stretchable wide bandgap electronics. Photolithography is applied on both sides of free-standing nanomembranes to create flexible structures directly on standard silicon wafers, allowing control over optical transparency and mechanical properties. The detachment and controlled mechanical buckling of the devices transform 2D wide bandgap semiconductors into complex 3D structures. This advancement in wide bandgap materials with 3D architectures will greatly facilitate the development of advanced 3D bio-electronics interfaces.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Biotechnology & Applied Microbiology
Helena H. W. B. Hansen, Haotian Cha, Lingxi Ouyang, Jun Zhang, Bo Jin, Helen Stratton, Nam-Trung Nguyen, Hongjie An
Summary: Nanobubbles, suspended gaseous entities in liquids, have versatile biomedical applications such as aiding in drug delivery, serving as imaging agents, and allowing controlled and targeted delivery. This review provides an overview of their preparation, characterization, current research focuses, and their potential impact on the future of biomedicine.
BIOTECHNOLOGY ADVANCES
(2023)
Review
Energy & Fuels
Mayank Chaturvedi, Daniel Haasmann, Hamid Amini Moghadam, Sima Dimitrijev
Summary: This paper reviews the electrically active defects at and near the interface between SiC and the gate dielectric in SiC power MOSFETs and MOS capacitors. The defects are classified into interface traps, near interface traps with energy levels aligned to the energy gap, and near-interface traps with energy levels aligned to the conduction band of SiC. Representative published results for each class of defect are shown and discussed.
Article
Nanoscience & Nanotechnology
Arnar M. Vidarsson, Daniel Haasmann, Sima Dimitrijev, Einar O. Sveinbjornsson
Summary: Recently, it has been suggested that fast interface traps may be the main cause of the poor inversion channel mobility in nitrided SiC MOSFETs. By analyzing metal oxide semiconductor capacitors using capacitance voltage analysis and conductance spectroscopy, it was found that these fast traps are absent in oxides made by sodium enhanced oxidation, resulting in high inversion channel-carrier mobility in MOSFETs made by sodium enhanced oxidation.
Article
Engineering, Multidisciplinary
Vinay Kumar, Van Thanh Dau, Zia Javanbakht, Andrew Seagar, Nam-Trung Nguyen, Peter Woodfield
Summary: The magnetic body force is crucial for modeling convection in ferrofluids, but there is no consensus on the formulation of this term in recent literature. We present an updated derivation of the body force directly from the Lorentz force and Maxwell's equations. By comparing with other formulations, we find that the calculated body force differs by a factor of about four for a susceptibility of the order of 1, greatly affecting thermomagnetic convection predictions for a heated microwire.
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Cong Minh Nguyen, Mohamed Sallam, Md Sajedul Islam, Kimberley Clack, Narshone Soda, Nam-Trung Nguyen, Muhammad J. A. Shiddiky
Summary: Playing a critical role in fetal growth and development, the placenta serves as the interface between fetal and maternal circulation. Placental exosomes, small membrane-bound extracellular vesicles released by the placenta during pregnancy, contain biomolecules that can potentially be biomarkers for maternal diseases. Numerous studies have demonstrated the usefulness of placental exosomes in diagnosing and monitoring conditions such as pre-eclampsia and gestational diabetes, suggesting their potential as new biomarkers in liquid biopsy analysis. This review provides an overview of the biological function of placental exosomes, their potential as biomarkers for maternal diseases, and the current barriers and future directions in exosome isolation, characterization, and detection techniques. Additionally, microfluidic devices for exosome research are discussed.
Review
Engineering, Biomedical
Akriti Nepal, Huong D. N. Tran, Nam-Trung Nguyen, Hang Thu Ta
Summary: In traumatized patients, uncontrollable continuous bleeding and unexpected intraoperative bleeding are the primary causes of mortality, increasing the risk of complications and surgical failure. Haemostatic sponges, with their high liquid absorption ratio, are an effective clinical practice for treating various types of wound bleeding. When in contact with blood, they can cause platelet adhesion, aggregation, and thrombosis, achieving the goal of wound bleeding control.
BIOACTIVE MATERIALS
(2023)
Article
Engineering, Biomedical
Haotian Cha, Yuchen Dai, Helena H. W. B. Hansen, Lingxi Ouyang, Xiangxun Chen, Xiaoyue Kang, Hongjie An, Hang Thu Ta, Nam-Trung Nguyen, Jun Zhang
Summary: Inertial microfluidics utilizes fluid inertia to manipulate particles and cells in a simple and precise manner. This study introduces an innovative way to adjust inertial focusing by embedding asymmetrical obstacle microstructures, resulting in unilateral focusing. The influence of obstacle size and asymmetrical patterns on unilateral inertial focusing is characterized, and this approach is successfully applied for the separation of particles and cancer cells from white blood cells.
CYBORG AND BIONIC SYSTEMS
(2023)
Article
Chemistry, Analytical
Fariba Malekpour Galogahi, Melody Christie, Ajeet Singh Yadav, Hongjie An, Helen Stratton, Nam-Trung Nguyen
Summary: In this study, a core-shell particle was developed as a protective framework for DNA, with potential applications in digital PCR. Liquid beads, specifically core-shell particles with liquid cores, were generated using a high-throughput and facile flow-focusing microfluidic device, providing precise control over process parameters and particle characteristics. The experimental results demonstrated that the liquid beads formulated using this technique can amplify encapsulated DNA and be used for digital PCR without interfering with the fluorescence signal.
Article
Computer Science, Information Systems
Vikas Joshi, Utkarsh Jadli, Peyush Pande, Mayank Chaturvedi, Daniel Haasmann, Sima Dimitrijev
Summary: This study investigates the impact of power MOSFET channel width on the power efficiency of a switch-mode power supply and proposes a circuit-specific criterion for selecting a MOSFET with minimal power dissipation. Simulation-based analysis demonstrates the effect of channel width on power dissipation and illustrates the advantage of the newly proposed method over the published method.
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)
