Article
Computer Science, Information Systems
Fanxin Zeng, Xiping He, Zhenyu Zhang, Li Yan
Summary: This paper presents five constructions for Z-optimal Type-II quadriphase Z-complementary pairs (QZCPs) with flexible lengths, which can generate new pairs that cannot be obtained by existing constructions. The resulting QZCPs have low peak-to-mean envelope power ratio (PMEPR) upper bounds, making them excellent candidates for PMEPR control in a multi-carrier communication system.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2022)
Article
Chemistry, Physical
Jinwoo Park, Kyung Yeon Jang, Song Hee Lee, Dong-Hyeok Kim, So-Hye Cho, Tae-Woo Lee
Summary: CsPbBr3 PeNCs were synthesized using perhydropolysilazane (PSZ) and encapsulated in a SiO2 matrix, resulting in chemically stable PeNC-PSZ composites with high photoluminescence quantum yield (PLQY) of 84.7% and long-term stability even in water.
CHEMISTRY OF MATERIALS
(2023)
Article
Mathematics, Applied
Cristian Danilo Olarte, Pedro Rizzo
Summary: C-infinity-Rings are R-algebras with operations phi(f) for every f in C-infinity (R-n) and every n in N. This allows for the development of C-infinity algebraic geometry using C-infinity rings instead of ordinary rings. Classical constructions, such as gluing schemes and fiber products, can be performed in this context. The article demonstrates the use of these constructions to exhibit examples of C-infinity-schemes and provides necessary and sufficient conditions for a functor F: C-infinity - Schemes -> Sets to be representable.
JOURNAL OF GEOMETRY AND PHYSICS
(2023)
Article
Computer Science, Hardware & Architecture
Shahram Khazaei, Mojtaba Rafiee
Summary: This article introduces a new security notion M3Partition for an adjustable join (Adjoin) scheme. It addresses the security deficiency of Adjoin when handling join queries on column pairs. By filling the gap between 3Partition and M3Partition with a sequence of security definitions, the paper proposes constructions for achieving both M3Partition and M3Pk security levels. The proposed schemes are substantially more efficient than previous ones.
IEEE TRANSACTIONS ON DEPENDABLE AND SECURE COMPUTING
(2022)
Article
Chemistry, Multidisciplinary
Aarya Prabhakaran, Zhiya Dang, Rohan Dhall, Fabrizio Camerin, Susana Marin-Aguilar, Balaji Dhanabalan, Andrea Castelli, Rosaria Brescia, Liberato Manna, Marjolein Dijkstra, Milena P. P. Arciniegas
Summary: Manipulating nano-objects through heating is an effective approach to modify the structure and optoelectronic properties of semiconducting materials. In this study, temperature-sensitive CsPbBr(3) perovskite nanoplatelets were synthesized and their structural evolution was observed at the nanoscale using in situ heating transmission electron microscopy. The morphological changes, starting from self-assembly into ribbons and ultimately forming randomly dispersed nanosheets on a substrate, were identified and supported by molecular dynamics simulations. The merging paths of the nanoplates within the ribbons were found to be influenced by the random orientation of the initial ribbons and the mobility of ligands, enabling the creation of structures with tunable emission ranging from blue to green.
Article
Chemistry, Multidisciplinary
Lijia Guo, Manying Liu, Yan Lei, Liwei Mi, Zhi Zheng
Summary: Inorganic perovskite CsPbBr3 is a promising candidate for optoelectronic devices due to its outstanding stability and visible light absorption. A single phase CsPbBr3 film was successfully fabricated using an in situ metal reaction strategy in methanol solution, where the thickness of the sputtered Pb film played a crucial role in inhibiting the formation of a secondary CsPb2Br5 phase. The resulting device architecture exhibited a power conversion efficiency of 4.08% and retained over 95% of its initial efficiency after 30 days of storage without packaging in an ambient environment.
Article
Chemistry, Multidisciplinary
Roberto Grisorio, Francesca Fasulo, Ana Belen Munoz-Garcia, Michele Pavone, Daniele Conelli, Elisabetta Fanizza, Marinella Striccoli, Ignazio Allegretta, Roberto Terzano, Nicola Margiotta, Paola Vivo, Gian Paolo Suranna
Summary: CsPbBr3 nanocrystals with improved stability were obtained by using an additional halide source to induce in situ formation of a zwitterionic ligand before cesium injection. This approach makes the nanocrystals insoluble in nonpolar solvents and allows them to form stable colloidal solutions in relatively polar solvents. The stability improvement is attributed to the bidentate adsorption of the zwitterionic ligand on the perovskite surfaces.
Article
Chemistry, Applied
Chunyan Zhang, Jin Miao, Lin Guo, Tao Tan, Wei Cai, Xiang Lei, Yanrui Li, Zhenhua Wang
Summary: Photocatalysis technology, as an environmentally friendly technology, has great potential in the fields of photoelectric energy and environmental pollutants treatment. Perovskite materials, with narrow band gap, high quantum efficiency, and high carrier mobility, have attracted much attention as photocatalysts. However, the electron-hole separation rate for a single perovskite is still low. In this study, a CsPbBr3/UiO-66 composite photocatalyst was prepared using a heterojunction strategy, which exhibited excellent photocatalytic performance due to the efficient Z-scheme charge migration mechanism.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yong-Tang Zeng, Zhan-Rong Li, Sheng-Po Chang, Arjun Ansay, Zi-Hao Wang, Chun-Yuan Huang
Summary: This study demonstrates a facile synthesis method for highly luminescent Zn-doped CsPbBr3 perovskite nanocrystals. The doping of Zn significantly enhances the photoluminescence quantum yield, spectral properties, and stability of the nanocrystals, making them a promising candidate for practical optoelectronic devices.
Article
Chemistry, Multidisciplinary
Xinyan Jiang, Yunxuan Ding, Song Zheng, Yinglin Ye, Zhengquan Li, Liyun Xu, Jin Wang, Zibiao Li, Xian Jun Loh, Enyi Ye, Licheng Sun
Summary: Metal halide perovskite nanocrystals have potential for photocatalytic CO2 reduction but their activities are limited by charge recombination and narrow solar spectrum response. By assembling heterojunctions, charge separation can be improved; however, interfacial defects hinder efficient charge transfer. This study presents an in-situ generation strategy to prepare CsPbBr3/WO3 heterojunction with a high-quality interface, facilitating charge transfer and resulting in enhanced CO2 reduction activity.
Article
Computer Science, Information Systems
Qi Chen, Chunming Tang, Zhiqiang Lin
Summary: This study aims to construct efficient and explicit ideal multipartite secret sharing schemes, which are considered as a useful generalization of threshold secret sharing. Some schemes are classified as hierarchical or compartmented in nature.
IEEE TRANSACTIONS ON INFORMATION THEORY
(2022)
Article
Physics, Applied
Samuel Berweger, Nikunjkumar Prajapati, Alexandra B. Artusio-Glimpse, Andrew P. Rotunno, Roger Brown, Christopher L. Holloway, Matthew T. Simons, Eric Imhof, Steven R. Jefferts, Baran N. Kayim, Michael A. Viray, Robert Wyllie, Brian C. Sawyer, Thad G. Walker
Summary: On-resonance Rydberg atom-based rf electric-field sensing methods can only detect narrow frequency bands. By adding an rf tuner field, the target Rydberg state can be dressed or shifted to achieve a detuned signal field, which greatly extends the frequency range available for resonant sensing.
PHYSICAL REVIEW APPLIED
(2023)
Article
Chemistry, Multidisciplinary
W. Xuan, H. Shan, D. Hu, L. Zhu, T. Guan, Y. Zhao, Y. Qiang, J. Song, J. Zhang, M. Sui, X. Gu, S. Huang
Summary: In this study, perovskite quantum dots (CsPbBr3) were coated with metal oxide (ZnO) using an in-situ oxidation strategy to enhance the moisture stability and gas sensing properties. The CsPbBr3@ZnO nanocrystals exhibited good sensitivity and a quick response/recovery time towards heptanal, a breath biomarker for lung cancer and COVID-19. Intelligent classification algorithms achieved high accuracy in identifying heptanal in simulated breath monitoring tests. This research holds promise for the development of stable and practical perovskite-based sensors.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Physics, Mathematical
Ruo Li, Wei Zhong
Summary: This study extends the order-preserving criterion to the WENO-Z type schemes, proposing the improved LOPGMWENO-X schemes through the concept of locally order-preserving mapping. The advantages of these schemes include fixing oscillation issues, maintaining high resolutions, increasing resolution in smooth wave regions, and reducing post-shock oscillations.
COMMUNICATIONS IN COMPUTATIONAL PHYSICS
(2022)
Article
Energy & Fuels
Rui Zhang, Linjia Li, YinYin Li, Dejun Wang, Yanhong Lin, Tengfeng Xie
Summary: The CsPbBr3 perovskite has potential application in photocatalytic CO2 reduction, but improving carrier separation capability and understanding the CO2 reduction reaction process is crucial. A new SnS2/CsPbBr3 nanocrystal heterostructure is developed, which enhances carrier separation efficiency and shows better catalytic activity compared to pure CsPbBr3. The study proposes a photocatalytic CO2 reduction mechanism and expands the understanding of CO2-photocatalyst interaction.
Article
Chemistry, Inorganic & Nuclear
Jian-Bin Luo, Jun-Hua Wei, Zhi-Zhong Zhang, Dai-Bin Kuang
Summary: Researchers synthesized a new type of lead-free organic-inorganic metal halide material with broadband emission and reversible emission transformation, making it a potential water sensing material.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Jin-Feng Liao, Zhipeng Zhang, Jun-Hua Wei, Zhi-Zhong Zhang, Bingzhe Wang, Lei Zhou, Guichuan Xing, Zikang Tang, Dai-Bin Kuang
Summary: This study reports a color-tunable phosphor with multiple emissive materials, which can be used in various applications. The phosphor shows high luminescent efficiency and stability, and can emit different colors of light by adjusting the composition, excitation wavelength, temperature, or time gating. It is further applied in multifunctional applications such as luminescent radiometric thermometer, white light emitter, and high-security anti-counterfeit materials.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xin Yang, Yu-Hua Huang, Xu-Dong Wang, Wen-Guang Li, Dai-Bin Kuang
Summary: In this study, A-site cation engineering was used to regulate the ionic migration and carrier transport capacity of low-dimensional bismuth-based hybrid perovskites. The use of BZA and 3-AMP improved the charge transport performance by reducing the distance between adjacent Bi-I octahedrons.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Multidisciplinary
Jun-Hua Wei, Yong-Wei Yu, Jian-Bin Luo, Zhi-Zhong Zhang, Dai-Bin Kuang
Summary: This study reports a multifunctional luminescent material (AEP)(2)Cu2I6 center dot 2I center dot 2H(2)O, which exhibits high photoluminescence quantum yield and responds to multiple excitation sources. The material demonstrates a high light yield and excellent attenuation capability for X-ray, making it suitable for applications in anti-counterfeiting, solid-state lighting devices, and digital radiography.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Junlei Tao, Xiaoni Liu, Jinliang Shen, Shichuang Han, Li Guan, Guangsheng Fu, Dai-Bin Kuang, Shaopeng Yang
Summary: The use of F-type pseudo-halogen additives in wide-band-gap perovskite films improves grain size, crystal quality, and reduces defect density. The substitution of F-type pseudo-halogen anions for I-/Br- releases stress distortion and effectively suppresses carrier recombination, reduces charge transfer loss, and inhibits phase separation. These findings enhance the power conversion efficiency and stability of wide-band-gap perovskite solar cells.
Article
Chemistry, Multidisciplinary
Jun-Hua Wei, Wei-Tao Ou, Jian-Bin Luo, Dai-Bin Kuang
Summary: Researchers have demonstrated a spatial-time-dual-resolved anti-counterfeiting system based on a new organic-inorganic hybrid halide. By regulating the halide-induced heavy-atom effect, the afterglow lifetime can be adjusted and can be identified by the naked eyes or with the help of a simple machine vision system. This provides the potential for high-security-level anti-counterfeiting through unicolor-time-resolved detection.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Jian-Bin Luo, Jun-Hua Wei, Zhi-Zhong Zhang, Zi-Lin He, Dai-Bin Kuang
Summary: This paper reports a new organic-inorganic metal halide luminescent glass with over 78% transmittance and a high photoluminescence quantum yield of 28.5%. The glass-crystal interconversion process and the disordered nature of the glassy state were investigated through temperature-dependent X-ray diffraction, polarizing microscopy, and molecular dynamics simulations. The outstanding optical properties and facility of large-scale fabrication make the organic-inorganic metal halide glass a highly promising class of materials for optical devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Zi-Lin He, Jun-Hua Wei, Jian-Bin Luo, Zhi-Zhong Zhang, Dai-Bin Kuang
Summary: The flexibility of organic-inorganic hybrid metal halides (OIMHs) provides unique properties. Stimuli-responsive materials have wide applications in thermal imaging, thermometry, and anti-counterfeiting. In this study, Mn(ii)-based OIMHs(TMS)(2)MnBr4 (TMS = trimethylsulfonium) were prepared using a simple dry ball-milled method. The obtained powders exhibited phase transition and emission switching, and the photoluminescence (PL) switching could be achieved by touching the (TMS)(2)MnBr4 powders, indicating their potential in portable thermosensitive devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Wen-Guang Li, Xu-Dong Wang, Yu-Hua Huang, Dai-Bin Kuang
Summary: In recent years, halide perovskites have shown great potential in X-ray detection due to their excellent optoelectronic properties and high X-ray attenuation coefficient. However, large-scale perovskite production for high-performance X-ray detectors is still very challenging. In this study, a combination of ultrasound-assisted crystallization and hot-pressing method is used to prepare a large-area and high-quality quasi-monocrystalline thick film of a mixed-cation perovskite MA(0.42)FA(0.58)PbI(3). This approach provides a more uniform nucleation and fusion of crystal boundaries, resulting in a quasi-monocrystalline film with improved carrier mobility and sensitivity. This research demonstrates the potential of the ultrasound-assisted crystallization and hot-pressing strategy for industrial applications in X-ray detection.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Zi-Lin He, Jun-Hua Wei, Zhi-Zhong Zhang, Jian-Bin Luo, Dai-Bin Kuang
Summary: In this study, three large centimeter-sized (2-DMAP)(2)MnX4 (2-DMAP(+) = 2-dimethylaminopyridinium, X = Cl, Br, I) single crystals with high quality were successfully synthesized via the solvent evaporation method. Among them, (2-DMAP)(2)MnBr4 exhibits high transparency and remarkable luminescent properties, achieving a high X-ray light yield, low limit of detection, and excellent X-ray imaging spatial resolution. Furthermore, the thickness of the single crystal can be easily regulated through a simple solution post-treatment method, which significantly influences the transmittance, spatial imaging resolution, and detection limit. This work presents a promising single-crystal scintillator for high-resolution X-ray imaging with low preparation cost and tunable thickness.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Engineering, Environmental
Min Yang, Xingwang Zhu, Zi Zhu, Haiyan Zhang, Dai-Bin Kuang, Youji Li
Summary: This study proposes an atomic activation method to design a flower-like NiAl-LDH/CeO2 hybrid heterojunction for selective CH4 photosynthesis. The electrons in the NiAl-LDH nanosheets spontaneously migrate to CeO2, forming an internal electric field that drives S-scheme charge transfer upon visible-light illumination. Additionally, the decorated CeO2 nanoparticles optimize the electronic structure and activate the originally inert Ni and Al atoms on NiAl-LDH, serving as potential active centrals. As a result, the NiAl-LDH/CeO2 heterojunction exhibits higher CH4 yield rate and selectivity compared to pristine NiAl-LDH and CeO2 materials. This work highlights an atomic activation technique for LDH-based heterogeneous photocatalysts, providing a new vision for developing efficient hybrid material systems for CO2 conversion applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Hai-Bing Zhao, Jia-Nan Huang, Qi Qin, Hong-Yan Chen, Dai-Bin Kuang
Summary: A CsCuCl3/Cu nanocrystals heterojunction catalyst was synthesized through a facile acid-etching solution process, which exhibited excellent charge separation efficiency and improved CO2 adsorption and activation, leading to high electron consumption rate and CH4 selectivity.
Article
Materials Science, Multidisciplinary
Xiu-Xian Guo, Jun-Hua Wei, Jian-Bin Luo, Zi-Lin He, Zhi-Zhong Zhang, Jing-Hua Chen, Dai-Bin Kuang
Summary: This study reports the synthesis and tunable emission of Sb3+-Ln(3+)-codoped Cs2NaYCl6 single crystals, which exhibit bright white-light emission with high photoluminescence quantum yield. Energy transfer from Sb3+-induced self-trapped excitons to Ln(3+) ions is revealed through spectral analysis. Temperature-dependent photoluminescence spectra demonstrate the potential of this material in ratiometric optical thermometry.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yu-Hua Huang, Xu-Dong Wang, Wen-Guang Li, Su-Yan Zou, Xin Yang, Dai-Bin Kuang
Summary: This study optimizes the band structure of low-dimensional perovskites by engineering the organic cations, leading to improved stability and optoelectronic performance. The band alignment between the organic cations and inorganic anions facilitates the separation of photogenerated carriers, while the shorter distance between molecules promotes carrier transfer.
Article
Chemistry, Physical
Jia-Nan Huang, Yu-Jie Dong, Hai-Bing Zhao, Hong-Yan Chen, Dai-Bin Kuang, Cheng-Yong Su
Summary: A ternary hybrid material featuring high CsPbBr3 nanocrystal loading, fast charge separation, and good CO2 uptake is designed and fabricated. By extracting photogenerated electrons to gold nanoparticles, charge recombination is effectively inhibited and CO2 reduction is accelerated.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
