Article
Nanoscience & Nanotechnology
Pavel Trofimov, Irina G. Bessonova, Petr Lazarenko, Demid A. Kirilenko, Nikolay A. Bert, Sergey A. Kozyukhin, Ivan S. Sinev
Summary: Laser-induced periodic surface structures can be fabricated in various solid materials, including phase-change material Ge2Sb2Te5 (GST), which offers strong modulation of optical properties due to its contrasting refractive index in crystalline and amorphous states. By optimizing laser exposure routines, large-scale high-quality phase-change gratings with controllable period can be achieved, demonstrating reversible tunability for applications in photonics. The results indicate the potential for fast and rewritable fabrication of high-quality periodic structures, providing a guideline for further development of phase-change material-based optical elements.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Optics
Forrest Miller, Rui Chen, Johannes E. Froch, Hannah Rarick, Sarah Geiger, Arka Majumdar
Summary: Photonic integrated circuits (PICs) can greatly enhance the capabilities of optical information science and engineering. We propose using wide-bandgap non-volatile phase-change materials (PCMs) to create rewriteable PICs. A nanosecond pulsed laser can be used to write a PCM-based PIC without removing any material. The entire circuit can be erased by heating and a new circuit can be rewritten. Our proposed platform enables low-cost manufacturing and has significant implications for rapid prototyping of PICs, design validation, and photonic education.
Article
Chemistry, Physical
Chen Li, Ke Liu, Shang Peng, Qi Feng, Dequan Jiang, Ting Wen, Hong Xiao, Binbin Yue, Yonggang Wang
Summary: We report a new material, CrSb2, which exhibits rewritable pressure and temperature dual-controlled n-p conduction type switching. The material undergoes a pressure-driven n-p conductivity transition at room temperature, accompanied by a structural transition and a semiconductor-to-metal transition. This transition is irreversible but can be reversed through annealing. The underlying mechanism is revealed through characterization and analysis of the microstructure, lattice distortion, and residual stress induced by compression.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Duong Nguyen Minh, Lan Anh Thi Nguyen, Cong Tai Trinh, Changjun Oh, Sangwon Eom, Thanh Van Vu, Jinwoo Choi, Jae Hyun Sim, Kwang-Geol Lee, Jaeyong Kim, Seong Chan Cho, Sang Uck Lee, Vera Cimrova, Youngjong Kang
Summary: A novel low-dimensional single-cation perovskite structure FA(m)(+2)Pb(m)Br(3)(m)(+2) was successfully prepared using a quenching-assisted solution process, allowing for dimensional control over 1D, 2D, and 3D perovskites by changing precursor compositions. These perovskites exhibit unique (110) orientation and are stabilized by PVDF, enabling the fabrication of stable composite films for rewritable phase-change memory applications that respond to various stimuli such as humidity, ultraviolet light, oxygen, and solvents.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Sicong Hua, Zhehao Xu, Xiao Su, Jiwei Zhai, Sannian Song, Zhitang Song
Summary: A multilevel phase-change memory cell based on a CrGeTe/HfGeSb superlattice structure is proposed, with SLL thin films exhibiting a stable and reversible three-step phase-change process. This design is identified as a feasible way to increase storage density.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Physics, Fluids & Plasmas
Claudio Chicchiero, Antonio Segalini, Simone Camarri
Summary: The study investigates the effect of surface roughness on steady laminar flow induced by a rotating disk submerged in a fluid at rest. A theory with a triple-deck analysis is proposed to evaluate the flow modification due to rough surface at low computational cost. Numerical simulations with various roughness geometries validate the theory, showing that it quantifies flow modifications effectively.
PHYSICAL REVIEW FLUIDS
(2021)
Review
Green & Sustainable Science & Technology
Ming Liu, Ehsan Shamil Omaraa, Jia Qi, Pegah Haseli, Jumal Ibrahim, Dmitry Sergeev, Michael Mueller, Frank Bruno, Peter Majewski
Summary: Latent heat thermal energy storage using phase change materials is a promising technology for integrating into concentrated solar power applications. While connecting multiple PCMs in series has potential to improve thermal performance, this technology has not been deployed commercially due to lack of reliable thermophysical property data for high temperature PCMs.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Review
Materials Science, Multidisciplinary
Reena Gadhwal, Parul Kaushik, Ambika Devi
Summary: All-optical limiting devices, based on materials enabling light to control light, have a nonlinear optical response and are gaining popularity. One-dimensional photonic crystals (1D PhC) are a promising platform for achieving optical limiters with low limiting threshold and high damage threshold. However, their utility to protect optical sensors and devices is still limited.
CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Ho Young Woo, Da Won Lee, Tae Yeol Yoon, Jong Bae Kim, Ji-Yeon Chae, Taejong Paik
Summary: This study demonstrates the colloidal synthesis of nearly monodisperse sub-100-nm n-paraffin/PMMA PCM nanobeads with superior colloidal stability and reversible phase transition behavior. The phase change temperatures can be tailored by changing the carbon length of n-paraffin while maintaining size uniformity. These sub-100-nm-sized PCM nanobeads have potential applications in thermal energy storage and drug delivery due to their high colloidal stability and solution processability.
Article
Chemistry, Physical
Chao Yang, Haosen Yin, Qi Lou, Zhi Cheng, Yuge Bai, Yining Su, Xin Li, Bin Zhao, Minggang Xia, Xiaogang Han
Summary: This study proposes a novel approach for providing the operating temperature of all-solid-state batteries (ASSBs) through a functional anti-leakage skeleton, efficient graphene-modified phase change material, and microwave thermal energy storage system. The composite material exhibits excellent thermal conductivity and low enthalpy loss, enabling the battery to achieve cold-starting in 1 minute through microwave irradiation. Furthermore, the composite material serves as a portable auxiliary heating equipment, allowing the battery to maintain 92% of its capacity compared to batteries placed in a 55°C oven. This research offers a distinctive route to achieve efficient and extensive applications of ASSBs through external preheating.
ENERGY STORAGE MATERIALS
(2023)
Article
Materials Science, Ceramics
Chih-Yu Lee, Chuanyu Lian, Hongyi Sun, Yi-Siou Huang, Niloy Acharjee, Ichiro Takeuchi, Carlos A. Rios Ocampo
Summary: Chalcogenide phase change materials (PCMs) offer great potential for the Optics and Photonics community, providing nonvolatility and large optical property modulation for devices with low-energy consumption and ultra-compact form factors. Precisely controlling the glassy amorphous and crystalline domains of PCMs is a challenging task, but essential for achieving intermediate optical response and repeatable reconfiguration.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Construction & Building Technology
Pengfei Wei, Guansheng Yin, Minghui Shi, Wanqi Zhang, Jintao Zhang, Wenqian Hao, Junjie Feng
Summary: This experimental study developed a phase change foamed concrete (PCFC) with suitable temperature regulation and heat storage capabilities. The optimum mass ratio of LA to HD in the binary eutectic is 53:47, and the maximum adsorption ratio of fumed silica for LA-HD is 60% (wt). The PCFC with 30% composite PCM exhibits the best thermal properties and temperature regulation performance.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Thermodynamics
Branson W. Davis, Jordi Poblador-Ibanez, William A. Sirignano
Summary: Numerical analysis of a shear layer between cool liquid n-decane hydrocarbon and hot oxygen gas at supercritical pressures reveals a well-defined phase equilibrium can be established, with nearly constant results within the laminar flow region and thick diffusion layers supporting continuum theory and phase equilibrium around the liquid-gas interface. Net mass flux shifts across the interface as pressure is increased, with net vaporization at low pressures and net condensation at high pressures. Similar one-dimensional profiles are observed at high Reynolds numbers, indicating validity of the boundary layer approximation and similarity in both phases.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Optics
Shuyuan Lv, Jie Jia, Wenfeng Luo, Xinhui Li
Summary: In this study, an adjustable metalens at 1.31 μm is realized using a double-layer Sb2S3 material and the geometric phase. Different functionalities are achieved by changing the states of Sb2S3. This design has the potential applications in optical imaging, scanners, and dual-function devices.
OPTICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Jianghong Wu, Yuting Ye, Jialing Jian, Xiaoping Yao, Junying Li, Bo Tang, Hui Ma, Maoliang Wei, Wenbin Li, Hongtao Lin, Lan Li
Summary: This study explores the thermally driven reversible phase transitions in two-dimensional In2Se3, as well as its potential applications in photonics. The reversible phase changes within the beta phase family and changes in optoelectronic properties make it suitable for integrated photonic applications.