Article
Chemistry, Multidisciplinary
Deqiang Yin, Qi Li, Yang Liu, Mark T. Swihart
Summary: This study reports the colloidal synthesis of quaternary kesterite CZTS-CZTSe heterostructures via anion exchange reactions on a kesterite CZTS template. The change of intrinsic electronic structure of CZTS by Se-treatment was confirmed by X-ray photoelectron spectroscopy (XPS) and optical band gap measurement results. The research provides insights into the mechanisms of formation of kesterite CZTS nanocrystals (NCs) and subsequent anion exchange reactions, as well as opens doors to access novel CZTSSe nanostructures for potential applications.
Article
Chemistry, Physical
Takaaki Tomai, Liangyu Tang, Akira Yoko, Yuki Omura, Gimyeong Seong, Tadafumi Adschiri
Summary: The study introduces a method for regenerating degraded facet-controlled nanoparticle catalysts through the dissolution-reprecipitation process and surface crystalline structure reorientation using an organic modifier. The modifier stabilizes the (100) facet, accelerates the dissolution-reprecipitation process, and promotes facet modification and catalyst regeneration.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
S. Paul, S. Sain, T. Kamilya, A. Dalui, P. K. Sarkar, S. Acharya
Summary: A novel method was developed to synthesize ligand-free ambient stable 2D cesium antimony chloride nanocrystals, hexagonal NCs were formed through a fast reaction and further transformed into well-defined 2D plates via solid-state crystal phase transition.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Minghui Guo, Peikuan Xu, Jin Lv, Chang Gong, Zhen Zhang, Chengjie Li
Summary: In this study, lightweight cellulose nanocrystals/graphene hybrid aerogels with highly porous and parallel arrangement three-dimensional networks were successfully fabricated. PEG was tightly anchored into the aerogels via capillary force and strong hydrogen bonding, resulting in shape-stable phase change materials. The composite phase change materials exhibited excellent energy storage capacity and thermal conductivity, showing promising potential for applications in energy storage.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Yilin Zhao, Jianzhou Wu, Hongquan Kang, Jie Fan
Summary: Unveiling the chemistry during the growth of well-defined nanocrystals is important but challenging in materials chemistry. In this study, Pd nanocrystals with tunable sizes were synthesized in the presence of potassium acetate (KOAc). The relationship between Pd precursor variation, reaction time, and reduction kinetic parameters was determined. The results showed that the introduction of KOAc did not affect the reduction processes. The interrelationship between the reduction rate constant (k), product size (d), and reaction temperature (T) was discussed. The growth pattern of Pd nanocrystals was described and confirmed to be a synergistic result of k and T by investigating six specific systems.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Erin N. Lang, Ashlin G. Porter, Tianhong Ouyang, Anni Shi, Tyler R. Hayes, Tyson C. Davis, Shelley A. Claridge
Summary: This study demonstrates that gold nanowires synthesized with oleylamine ligands undergo thermal transitions in interfacial assembly, with transition temperatures varying with the batch of oleylamine used. Mass spectra and DSC thermograms reveal that the abundance of trans and saturated chains affects these transition temperatures. These findings highlight the potential of using blends of alkyl chains to generate mesoscopic hierarchical nanocrystal assembly at interfaces.
Article
Nanoscience & Nanotechnology
Zi-Feng Tian, Hong-Yan Zeng, Shi-Bing Lv, Yi-Wen Long, Sheng Xu, Hao-Bo Li, Kai-Min Zou
Summary: A facile two-step hydrothermal approach with post-sulfurization treatment was used to construct mixed transition metal sulfide (NiCoZnS) with high electrochemical performance. Different morphologies of NiCoZnS materials were obtained by adjusting the Ni/Co molar ratio. In situ phase transformation and lattice defects were observed, which improved the conductivity and active sites of NiCoZnS. The urchin-like NiCoZnS1/1 material exhibited promising electrochemical performances and the asymmetric device using NiCoZnS1/1 as the positive electrode showed excellent supercapacitor performances.
Article
Chemistry, Physical
De Zhang, Bin Zhang, Zizhen Zhou, Guiwen Wang, Zien Cheng, Pengfei Jiang, Hong Wu, Peng Chen, Guang Han, Guoyu Wang, Xiaoyuan Zhou, Xu Lu
Summary: Complex thermoelectric materials composed of multiple phases with order/disorder mixing feature have drawn intense attention due to their high performance. However, some physical mechanisms relevant to thermoelectric properties including the relationship between carrier mobility and disorder extent in these materials are still elusive. In this study, a phase-dependent mobility edge in (Cu2Sn1-yS3)(0.85)(CuGaS2)(0.15) solid solutions is demonstrated, showing a new route to tuning the electrical and thermal transport properties for complex thermoelectric materials with multiple phases.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Taesuk Jun, Hyunjun Park, Junsu Kim, Wooseop Lee, Hyungju Ahn, Woo-Dong Jang, Byeongdu Lee, Du Yeol Ryu
Summary: A series of dendrons with an identical core wedge were investigated to understand the effect of peripheral alkyl chain lengths on the formation of sphere-packing mesophases. Dendrons with longer peripheral lengths assemble into a body-centred cubic phase, while those with shorter lengths form the FK A15 phase. Intermediary dendrons show cooling-rate-dependent phase behaviors, producing different structures depending on the cooling process. The results highlight the complex and delicate energy landscape of dendrons with peripheral lengths approximately equal to the wedge length.
Article
Biochemistry & Molecular Biology
Cuiying Tan, Yunqing He, Binghong Luo, Mingxian Liu
Summary: In this study, Pickering emulsion stabilized with chitin nanocrystals (ChNCs) was used to prepare paraffin wax (PW) microcapsules with a dense shell, and loaded into metal foam to enhance thermal conductivity. The PW microcapsules showed good thermal cycling stability and satisfactory latent heat storage capacity. The encapsulation of the polymer shell provided high encapsulation efficiency, non-leakage properties under prolonged high temperature conditions, and high flame retardancy. This study demonstrates a new design strategy using natural and sustainable nanomaterials stabilized PCMs, which has promising applications in energy management and thermal regulation.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Multidisciplinary Sciences
Hamed Almohammadi, Sandra Martinek, Ye Yuan, Peter Fischer, Raffaele Mezzenga
Summary: In the process of nucleation and growth, thermodynamics and kinetics play crucial roles in determining the composition, shape, structure and physical properties of heterogeneous colloidal systems. By selectively choosing colloidal systems and controlling phase separation, we can separate the effects of kinetics from thermodynamics and discover new physical phenomena. This approach enables the on-demand fabrication of multicomponent heterogeneous liquid crystals and opens up new research directions in multicomponent structured fluids.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Dmitry N. Dirin, Anna Vivani, Marios Zacharias, Taras V. Sekh, Ihor Cherniukh, Sergii Yakunin, Federica Bertolotti, Marcel Aebli, Richard D. Schaller, Alexander Wieczorek, Sebastian Siol, Claudia Cancellieri, Lars P. H. Jeurgens, Norberto Masciocchi, Antonietta Guagliardi, Laurent Pedesseau, Jacky Even, Maksym V. Kovalenko, Maryna I. Bodnarchuk
Summary: The search for nontoxic alternatives to lead halide perovskites (LHPs) has revealed that the properties of LHPs can only be achieved in their closest Sn(II) and Ge(II) analogues, despite their tendency to oxidize. A judicious choice of chemistry led to the development of formamidinium tin iodide (FASnI3) with a power conversion efficiency of 14.81% in photovoltaic devices. The synthesis of colloidal FASnI3 NCs with reduced Sn(IV) concentration allowed for the investigation of their intrinsic structural and optical properties, showing characteristics distinct from bulk FASnI3.
Article
Nanoscience & Nanotechnology
Han-Tang Jhao, Cheng-Yu Zhan, Hsin-Lun Wu
Summary: In this study, intermetallic PdCd nanocubes with a face-centered tetragonal phase were synthesized, which not only preserved the catalytic activity but also exhibited an increase in catalytic activity upon illumination. The alloyed structure of the nanocubes had the maximum number of active Pd sites, and the increase in catalytic activity can be attributed to an increase in the number of s-band free electrons upon doping of Cd atoms.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Katherine L. Thompson, Rowan R. Katzbaer, Mauricio Terrones, Raymond E. Schaak
Summary: Ion exchange reactions of colloidal nanoparticles allow for modification of composition while maintaining morphology and crystal structure, which is crucial for tuning properties and producing otherwise inaccessible materials. In this study, tellurium anion exchange of copper selenide nanoparticles was conducted, resulting in the formation of solid solutions with tunable compositions. The post-exchange reactivity of the solid solution nanoparticles, including transformation of composition, surface chemistry, and colloidal dispersibility, was observed due to the apparent metastability of the product.
INORGANIC CHEMISTRY
(2023)
Article
Polymer Science
Guangqin Shi, Cheng Huang, Xinyu Cao, Minying Liu, Jingnan Zhang, Kun Zheng, Yongmei Ma
Summary: A triple-shape memory polymer was prepared by chemically crosslinking melting blending of ethylene-vinyl acetate copolymer (EVA) and poly(propylene carbonate) (PPC), showing excellent triple shape memory effects with shape fixing ratio and shape recovery ratio both over 90%. The key to achieving triple SME is the matching of the modulus of the two components, with the glassy PPC having a higher modulus than the semi-crystalline EVA.
Article
Physics, Applied
Nguyen Tam Nguyen Truong, Thao Phuong Ngoc Nguyen, Viet Thanh Hau Pham, Kieu Thanh Trinh, Sang-hoon Lee, Chinho Park
JAPANESE JOURNAL OF APPLIED PHYSICS
(2015)
Article
Chemistry, Multidisciplinary
Viet Hau Thanh Pham, Nguyen Tam Nguyen Truong, Thanh Kieu Trinh, Sang Hoon Lee, Chinho Park
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2016)
Article
Chemistry, Multidisciplinary
Nguyen Tam Nguyen Truong, Kieu Thanh Trinh, Viet Thanh Hau Pham, Chang Duk Kim, Chinho Park
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2015)
Article
Nanoscience & Nanotechnology
Thanh Kieu Trinh, Nguyen Tam Nguyen Truong, Viet Thanh Hau Pham, Chinho Park
SCIENCE OF ADVANCED MATERIALS
(2016)
Article
Physics, Applied
Viet Thanh Hau Pham, Thanh Kieu Trinh, Nguyen Tam Nguyen Truong, Chinho Park
JAPANESE JOURNAL OF APPLIED PHYSICS
(2017)
Article
Chemistry, Multidisciplinary
Nguyen Tam Nguyen Truong, Ha Hai Thi Hoang, Thanh Kieu Trinh, Viet Thanh Hau Pham, Ryan Patrick Smith, Chinho Park
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2017)
Article
Physics, Applied
Nguyen Tam Nguyen Truong, Thanh Kieu Trinh, Viet Thanh Hau Pham, Ryan P. Smith, Chinho Park
JAPANESE JOURNAL OF APPLIED PHYSICS
(2018)
Article
Chemistry, Multidisciplinary
Thanh Kieu Trinh, Nguyen Tam Nguyen Truong, Viet Thanh Hau Pham, Hyoeun Kim, Chinho Park
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2018)
Article
Materials Science, Multidisciplinary
Chang-Duk Kim, Nguyen Tam Nguyen Truong, Viet Thanh Hau Pham, Younjung Jo, Hyeong-Rag Lee, Chinho Park
MATERIALS CHEMISTRY AND PHYSICS
(2019)
Article
Biochemistry & Molecular Biology
Nguyen Van Hoa, Nguyen Cong Minh, Hoang Ngoc Cuong, Pham Anh Dat, Pham Viet Nam, Pham Hau Thanh Viet, Pham Thi Dan Phuong, Trang Si Trung
Summary: In this study, highly porous hydroxyapatite/graphene oxide/chitosan beads were prepared and investigated as efficient adsorbents for methylene blue and copper ions. The beads showed rapid adsorption, high capacity, easy separation, and were easily reused due to their porous characteristics and negative charges. The maximum sorption capacities of the beads were found to be 99.00 and 256.41 mg g(-1) for methylene blue and copper ions, respectively.
Article
Energy & Fuels
Viet Thanh Hau Pham, Thanh Kieu Trinh, Hamid M. Shaikh, Saeed M. Al-Zahrani, Abdullah Alhamidi, Sami Bin Dahman, Mohaseen S. Tamboli, Nguyen Tam Nguyen Truong
Summary: In this study, the effects of using a 1-butyl-3-methylimidazolium chloride (BMIM+Cl-) ionic liquid on the conductivity and morphological properties of the hole-transport layer (HTL) made of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films were investigated. The conductivity of the acidic PEDOT:PSS film was decreased, while the conductivity of the pH-neutral PEDOT:PSS film was increased. The surface morphology of the pH-neutral PEDOT:PSS film slightly changed, while the surface morphology of the acidic PEDOT:PSS film remained relatively unchanged. Vacuum-free planar hybrid solar cells using the pH-neutral PEDOT:PSS film showed higher power conversion efficiency compared to those using the acidic PEDOT:PSS film.
Article
Crystallography
Jianzheng Hu, Long Yan, Ning Zhou, Yao Chen, Xiaoni Yang, Lianqiao Yang, Shiping Guo
Summary: The effect and mechanism of carrier gas velocity, V/III ratio, and carrier gas velocity match on the growth rate of AlN were investigated in this study. The results showed that the growth rate of AlN initially increased with hydrogen flow rate, reached saturation, and then decreased monotonically. The turning point value depended on the equipment and process. By increasing the MO VM, the growth rate of AlN could be improved, but the uniformity deteriorated due to turbulence and loss of uniform boundary layer. High quality AlN films were successfully grown on nano-patterned sapphire substrates with improved crystalline quality and atomic smooth surfaces.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Tingting Ma, Yang Li, Kangning Sun, Qinglin Cheng, Sen Li
Summary: This study investigates the melting process and nucleation behavior of sodium crystals using molecular dynamics simulation. The results show good agreement between simulated and experimental values for the melting temperature, density, and radial distribution function of sodium. The diffusion coefficient of liquid sodium increases linearly with temperature, and the homogeneous nucleation rate of melting in superheated sodium crystal exponentially increases with temperature. The findings provide theoretical support for applications involving heat and mass transfer in sodium-related systems.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Hisato Nishii, Shintarou Iida, Akira Yamasaki, Takumi Ikenoue, Masao Miyake, Toshiya Doi, Tetsuji Hirato
Summary: Epitaxial V2O3 films were fabricated on sapphire substrates using mist chemical vapor deposition (mist CVD) method, eliminating the need for high vacuum conditions. The films can be grown on sapphire substrates even under atmospheric pressure, with the optimal growth temperature at 823 K. The films grown at 823 K exhibit a metal-insulator transition at approximately 155 K. The film on C-plane sapphire exhibits a lower transition temperature compared to those on R- and A-plane sapphire substrates.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Jani Jesenovec, Kevin Zawilski, Peter Alison, Stephan J. Meschter, Sambit K. Saha, Andrew J. Sepelak, Peter G. Schunemann
Summary: In this study, NiSb needles were successfully formed in InSb by manipulating the growth rate and adding NiSb. These needle structures in InSb can be used to tune the magnetoresistance of devices. Additionally, undoped InSb crystals demonstrated good infrared transmission at low growth rates.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
D. Joseph Daniel, P. Karuppasamy, H. J. Kim
Summary: The 2-amino 4-methyl pyridinium oxalate (2A4MPO) compound was synthesized and its crystal structure, functional groups, thermal stability, electrical properties, and third-order nonlinear optical properties were studied. The results demonstrate that the synthesized crystal has good structural integrity, thermal stability, and potential for third-order nonlinear optical applications.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
C. W. Lan
Summary: The past two decades have witnessed a significant transformation in solar silicon crystal growth, especially in the competition between multi-crystalline silicon (Multi-Si) and mono-crystalline silicon (Mono-Si). The demand for this crucial material has exponentially surged, with silicon solar panels capturing over 95% of the global PV market share. The advancements in crystal growth technology during this period have set historical benchmarks, with the market share shifting from high-performance multi-crystalline silicon (HPM-Si) to CZ silicon.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Peiyao Hao, Lili Zheng, Hui Zhang
Summary: A novel design of argon gas tube for removing impurities during silicon ingot growth was developed, and numerical simulations showed that it can effectively extract SiO.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Geetika Sahu, Chanchal Chakraborty, Subhadeep Roy, Souri Banerjee
Summary: This article discusses the novel fractal nature of hydrothermally synthesized MoS2 QDs. By adjusting the reaction time, the study found that the average size of QDs increases and then decreases with longer reaction times. STEM images indicate that shorter reaction times lead to sheet formation, while extended reaction times cause sheets to fragment into QDs.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Pengjian Lu, Wei Huang, Junjun Wang, Haitao Yang, Shiyue Guo, Bin Li, Ting Wang, Chitengfei Zhang, Rong Tu, Song Zhang
Summary: A systematic study on the tetramethylsilane-hydorgen (TMS-H-2) system for the deposition of pure single-crystal SiC by high-temperature chemical vapor deposition (HTCVD) method is conducted. The study investigates the effect of temperature, pressure, and H-2:TMS ratio on the deposition conditions and provides a theoretical basis and guidance for improving the quality and cost of industrial production of single-crystal SiC.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Xinyu Jiang, Liangliang Liu, Yanqing Liu, Yan Wang, Zhaoping Hou
Summary: Investigation on the preparation of anisometric templated textured high entropy or multi-element doped ferroelectric ceramics was conducted using A-site disordered niobate microcrystals. The effects of process parameters on the morphology and chemical composition were studied, and the photocatalytic properties of the microcrystals were evaluated.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Mobashsara Tabassum, Md. Ashraful Alam, Sabrina Mostofa, Raton Kumar Bishwas, Debasish Sarkar, Shirin Akter Jahan
Summary: In this study, high crystallinity copper nanoparticles were synthesized by altering the reaction medium at low temperatures. The results show that changing the reaction medium can reduce the surface energy of precursors and promote the formation of highly crystalline copper nanoparticles.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Ivan Bodnar, Vitaly V. Khoroshko, Veronika A. Yashchuk, Valery F. Gremenok, Mohsin Kazi, Mayeen U. Khandaker, Tatiana I. Zubar, Daria I. Tishkevich, Alex Trukhanov, Sergei Trukhanov
Summary: This work presents the production of single crystals of Cu2ZnGeSe4, a semiconducting quaternary compound, using a gas chemical method with iodine as a transporter. The phase state, crystal structure, and lattice constants of the synthesized samples were refined and determined. The band gap of Cu2ZnGeSe4 was calculated using transmission spectrum and it was found that the band gap increases by 12% with decreasing temperature in the range of 20-300 K.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Timur Malin, Igor Osinnykh, Vladimir Mansurov, Dmitriy Protasov, Sergey Ponomarev, Denis Milakhin, Konstantin Zhuravlev
Summary: The effect of growth temperature on the buffer leakage currents of GaN-on-Si layers was investigated. It was found that higher growth temperature results in lower leakage currents. The defects in GaN layers grown at different temperatures were studied using photoluminescence technique, and a correlation between leakage currents, structural perfection, and donor concentration in GaN-on-Si layers was established. It was also observed that reduced growth temperature leads to the formation of inversion domains.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Thi-Hoai-Thu Nguyen, Jyh-Chen Chen
Summary: The effect of heater power control on heat, flow, and oxygen transport for CCz crystal growth was studied. Shorter upper side heater design could improve crystal quality and growth, but with higher power consumption.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Peter Rudolph
Summary: This article presents an overview of selected contributions to the development of crystal growth technology by the Laudise Prize awardee 2023. It discusses various aspects such as shaped crystal growth, the correlation between melt structure and crystal quality, control of intrinsic defects and inclusions, prevention of dislocation cell patterns, and melt growth experiments under a travelling magnetic field.
JOURNAL OF CRYSTAL GROWTH
(2024)