Article
Engineering, Electrical & Electronic
Chaochao Ye, Chanju Kim, Yi Zheng, Yueguang Zhou, Ayman N. Kamel, Yanjing Zhao, Kresten Yvind, Minhao Pu
Summary: Microresonator-based optical frequency combs have wide-ranging applications and require dispersion control for soliton generation. Mode crossing in microresonators can disrupt dispersion and distort the comb spectrum. We present a robust waveguide design to suppress unintended mode crossing by manipulating the phase mismatch between coupling modes, demonstrated experimentally in the AlGaAs-on-insulator platform.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Wei Lin, Hao Zhang, Zhonghua Gong, Bo Liu, Haifeng Liu, Binbin Song, Jixuan Wu
Summary: This study theoretically analyzes nonreciprocal morphology-dependent resonance in spinning stacked microresonators based on the Sagnac-Fizeau effect, providing significant guidance for the design of nonreciprocal photonic devices. Fano resonance and mode splitting resonance in microresonators at different rotation frequencies are discussed, with simulation results expected to have promising applications in various fields such as unidirectional microcavity lasers and quantum optical communications.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ye Luo, Chunlei Sun, Maoliang Wei, Hui Ma, Yingchun Wu, Zequn Chen, Hao Dai, Jialing Jian, Boshu Sun, Chuyu Zhong, Junying Li, Kathleen A. Richardson, Hongtao Lin, Lan Li
Summary: Photonic mechanical sensors offer advantages over electronic counterparts, but existing flexible photonics strategies face challenges. To address these, a waveguide-integrated flexible mechanical sensor based on photonic crystal microcavities is proposed, with exceptional performance and potential applications.
Article
Chemistry, Multidisciplinary
Tao Feng, Teng Zhao, Nanxiang Zhang, Yuzhen Duan, Li Li, Feng Wu, Renjie Chen
Summary: This study designed for the first time a 2D amorphous Mo-doped cobalt boride as a bidirectional sulfur catalyst for advanced lithium sulfur batteries. The atom cluster structure and the interaction of Mo, B, Co atoms contribute to enhanced conductivity, high long-chain lithium polysulfides affinity, and reversible Li2S nucleation and dissociation, thus accelerating LiPSs reduction and Li2S oxidation kinetics. The S cathode with Co7Mo3B catalyst delivers good life and superior rate performance.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Optics
Boshu Sun, Maoliang Wei, Kunhao Lei, Zequn Chen, Chunlei Sun, Junying Li, Lan Li, Hongtao Lin
Summary: This article discusses the design and experimental demonstration of a reconfigurable hybrid Bragg grating filter that exhibits compact, low-loss, and broadband engineering operations, making it a potential candidate for large-scale reconfigurable photonic systems.
Article
Biochemistry & Molecular Biology
Justyna Sulowska, Dominika Madej, Bartlomiej Pokrzywka, Magdalena Szumera, Andrzej Kruk
Summary: A series of silicate-phosphate glass materials were synthesized from the SiO2-P2O5-K2O-MgO system, with and without doping of sulfur ions, using activated carbon as a reducer. The glass composition, homogeneity, structural and optical properties were confirmed through various spectroscopic and microscopic techniques, highlighting changes in the silicate-phosphate networks caused by sulfur doping. The emission characteristics of the glass samples under UV excitation were studied, showing a wide spectrum of luminescence, with a peak around 700 nm, depending on the glass composition and laser-processing parameters.
Review
Optics
Nathan Youngblood, Carlos A. Rios Ocampo, Wolfram H. P. Pernice, Harish Bhaskaran
Summary: Memristors in electronics have shown great potential in various applications, and the ability to vary conductance has led to interest in memristors. In the field of photonic computing, optical analogues of memristors, which modulate light transmission in integrated circuits, are being pursued. This review focuses on recent progress and the current state of integrated optical memristors.
Review
Optics
Yuning Zhang, Jiayang Wu, Linnan Jia, Yang Qu, Yunyi Yang, Baohua Jia, David J. Moss
Summary: Integrated photonic devices operating via optical nonlinearities offer a powerful solution for all-optical information processing, and graphene oxide (GO) has attracted significant attention for its large optical nonlinearity and facile fabrication processes. This paper reviews the applications of GO to nonlinear integrated photonics, including its optical properties, fabrication technologies, and the state-of-the-art GO nonlinear integrated photonic devices. The challenges and future opportunities in this field are also discussed.
LASER & PHOTONICS REVIEWS
(2023)
Review
Chemistry, Multidisciplinary
Jiayang Wu, Linnan Jia, Yuning Zhang, Yang Qu, Baohua Jia, David J. Moss
Summary: Graphene oxide (GO) has shown great potential in integrated photonics for various applications such as photovoltaics, sensing, and nonlinear optics. Significant progress has been made in understanding the optical properties of GO and methods for on-chip integration, but challenges and areas for improvement remain.
ADVANCED MATERIALS
(2021)
Review
Optics
Xiaojun Chen, Jiao Lin, Ke Wang
Summary: Silicon-integrated optical circuits have been gaining significant attention due to their compatibility with CMOS technology, enabling low-cost mass production. Optical switches, an integral part of these circuits, have various applications in optical communications, optical computing, and sensing. Existing silicon-integrated optical switches that utilize thermo-optic or carrier dispersion effects have drawbacks of high power consumption and small refractive index change. To address these issues, researchers have incorporated phase-change materials (PCMs) into silicon-integrated optical switches. This paper classifies and reviews the recent research on silicon-integrated optical switches, as well as compares the advantages and disadvantages of different types of switches with and without PCMs.
LASER & PHOTONICS REVIEWS
(2023)
Article
Nanoscience & Nanotechnology
Danveer Singh, Michal Poplinger, Avraham Twitto, Rafi Snitkoff, Pilkhaz Nanikashvili, Ori Azolay, Adi Levi, Chen Stern, Gili Cohen Taguri, Asaf Albo, Doron Naveh, Tomer Lewi
Summary: A chemical vapor deposition technique has been utilized to deposit amorphous selenium spheres on various substrates and characterize their Mie-resonant response in the mid-infrared spectral range. The amorphous selenium spheres demonstrate size-tunable Mie resonances and strong absorption dips of up to 90% in a broad MIR range. Furthermore, ultra-high-Q resonances are observed when Se Mie-resonators are coupled to low-loss epsilon-near-zero substrates.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Food Science & Technology
Cheng Wang, Beibei Zhang, Yanfang Li, Jing Hou, Chendan Fu, Zihui Wang, Jingfang Zhang
Summary: As an important quality determinant of Toona sinensis, the unique aroma greatly influences consumer purchasing behavior. Despite this, the formation mechanism of the characteristic aroma in T. sinensis is not well understood. This study used volatile/nonvolatile compound profiling and RNA sequencing to characterize six T. sinensis cultivars. Key volatile organic compounds (VOCs) in T. sinensis were found to be volatile sulfur compounds (VSCs) and terpenoids. The differential metabolic profiles of these compounds contribute to the distinct aroma of different T. sinensis cultivars. Chemometric analysis identified 13 VOCs as potential biomarkers for distinguishing these cultivars. Transcriptomic analysis confirmed the biosynthetic pathways of key VSCs in T. sinensis, with 1-propenylsulfenic acid identified as a crucial precursor. Two potential mechanisms for the differences in key VSCs among cultivars were proposed. These findings provide theoretical guidance for improving the aroma quality of T. sinensis.
FOOD RESEARCH INTERNATIONAL
(2023)
Review
Chemistry, Multidisciplinary
Jianli Wang, Wei-Qiang Han
Summary: Lithium sulfur batteries, with high theoretical capacity and energy density, face challenges such as poor conductivity of active sulfur, large volume expansion of cathode, and shuttle effect of lithium polysulfides. Heteroatom doping is proposed to manipulate the electronic structure and improve the performance of sulfur host materials for enhanced cell performance.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xiaozhe Wang, Suyang Sun, Jiang-Jing Wang, Shuang Li, Jian Zhou, Oktay Aktas, Ming Xu, Volker L. Deringer, Riccardo Mazzarello, En Ma, Wei Zhang
Summary: The layered crystal structure of Cr2Ge2Te6 exhibits ferromagnetic ordering in the two-dimensional limit, making it a promising candidate for spintronic applications. However, the non-crystalline phase induced by external voltage pulses may lead to changes in the magnetic properties. This study demonstrates that Cr2Ge2Te6 preserves its spin-polarized nature in the amorphous phase but undergoes a magnetic transition to a spin glass state at low temperatures. Quantum-mechanical computations reveal that this transition is due to strong distortions in the Cr-Te-Cr bonds and the overall increase in disorder upon amorphization. The tunable magnetic properties of Cr2Ge2Te6 can be utilized for multifunctional magnetic phase-change devices that can switch between crystalline and amorphous states.
Article
Materials Science, Multidisciplinary
Haiyan Shang, Mingjie Zhang, Dandan Sun, Yan-Ge Liu, Zhi Wang, Dong Liu, Siqing Zeng
Summary: Research shows that Ge25Sb10S65 glass has greater hardness and stronger resistance to laser damage, making it suitable for on-chip integrated devices and applications in optical frequency combs or supercontinuum generation.
RESULTS IN PHYSICS
(2021)
Article
Materials Science, Ceramics
Arnaud Lemiere, Bartosz Bondzior, Iisa Aromaki, Laeticia Petit
Summary: This paper reports on the structural, thermal, optical, and spectroscopic properties of Er3+-doped tellurite glasses with different compositions. It is found that the crystalline structures formed after thermal treatment significantly affect the intensity of upconversion and mid-infrared emissions from Er3+ ions.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Shambhavee Annurakshita, Vilma Lahti, Laeticia Petit, Godofredo Bautista
Summary: Using 3D second-harmonic generation microscopy, the formation and distribution of persistent luminescent microparticles in glasses prepared using the direct doping method are investigated. The microparticles show distinctive and highly localized patterns, with different characteristics depending on the doping temperature and dwell time.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
A. Lemiere, A. Szczodra, S. Vuori, B. Bondzior, T. W. Hawkins, J. Ballato, M. Lastusaari, J. Massera, L. Petit
Summary: The first biophotonic composite fiber with green persistent luminescence was successfully prepared using commercial persistent luminescent microparticles and bioactive glass. The fibers exhibited green afterglow and maintained their bioactive response.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Materials Science, Multidisciplinary
Marwa Ennouri, Laeticia Petit, Habib Elhouichet
Summary: This work investigates the impact of Ag2O on the thermal, structural, and Near-IR luminescence of Er3+ doped calcium-fluorophosphate glasses. The amount of silver oxide significantly affects the thermal stability and crystallization process of the glass. Thermal treatment induces the precipitation of Ag nanoparticles within the glass network, leading to an enhancement in the Er3+ IR emission.
Article
Materials Science, Multidisciplinary
Arnaud Lemiere, Bartosz Bondzior, Luukas Kuusela, Alexander Veber, Laeticia Petit
Summary: This paper reports the structural, thermal, and optical properties of Er3+ doped germanate glasses with various compositions. The glasses exhibit low phonon energies and high glass transition temperatures. Raman spectra show different polymerization degrees of the glasses. The thermal treatment results in the precipitation of crystals, composition of which depends on the glass composition. Er-doped crystals are found to affect the spectroscopic properties, leading to an increase in upconversion and MIR emissions, particularly in glasses with Y2O3, ZnO, and TiO2.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Materials Science, Multidisciplinary
John Ballato, Ulrich Fotheringham, Mathieu Hubert, Stefan Nolte, Laeticia Petit, Kathleen A. Richardson
Summary: This feature issue introduces the historical and recent advances in optical glass. In celebration of the International Year of Glass (IYOG) declared by the United Nations in 2022, this issue includes a collection of twenty-seven manuscripts that showcase the processing, characterization/metrology, and applications where glass has made significant contributions to our world.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Chemistry, Physical
N. Garcia Arango, S. Vuori, H. Byron, D. Van der Heggen, P. F. Smet, M. Lastusaari, L. Petit
Summary: This study demonstrates the fabrication process of Yb3+, Tm3+ co-doped oxyfluorophosphate glass-based composites that exhibit green persistent luminescence when charged with near-infrared light. The mechanism behind the green afterglow and the optimization of up-conversion emission are investigated. The addition of SrAl2O4:Eu2+,Dy3+ crystals enhances the green afterglow effect.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Optics
Bartosz Bondzior, Chi Nguyen, Thi Hong Quan Vu, Diego Pugliese, Przemyslaw J. Deren, Laeticia Petit
Summary: The Judd-Ofelt theory was tested on Eu3+-doped glasses to evaluate their potential as luminescent thermometers. The theory accurately estimated the thermometric sensitivity, and the addition of B2O3 or SiO2 increased the absolute sensitivity without affecting the position of Eu3+ ions.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Multidisciplinary
Mikko Hongisto, Otto Linros, Sylvain Danto, Veronique Jubera, Laeticia Petit
Summary: The thermal and physical properties of Yb3+-doped phosphate glasses were studied. Changes in the glass composition impacted the glass structure and crystallization process, with the addition of Al2O3, TiO2, and ZnO promoting the formation of specific crystalline phases.
MATERIALS RESEARCH BULLETIN
(2023)
Review
Materials Science, Multidisciplinary
Wilfried Blanc, Yong Gyu Choi, Xianghua Zhang, Marcelo Nalin, Kathleen A. Richardson, Giancarlo C. Righini, Maurizio Ferrari, Animesh Jha, Jonathan Massera, Shibin Jiang, John Ballato, Laeticia Petit
Summary: Since the 1960s, photonics has become an integral part of modern life, thanks to the invention and development of lasers. Glass, being versatile and easily fabricated, has played a crucial role in various applications related to the generation, transmission, modulation, amplification, conversion, and detection of light. This paper reviews the past, present, and future of photonic glasses in honor of the United Nations International Year of Glass 2022.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Bartosz Bondzior, Thu Hoang, T. H. Quan Vu, Przemysaw J. Deren, Laeticia Petit
Summary: The thermometric sensitivity of different Eu3+ doped glasses in different glass systems was theoretically calculated using the Judd-Ofelt parameters and compared to experimental data. The study aimed to test the limitations of thermal sensitivity estimation using Judd-Ofelt parameters in various glass systems. Discrepancies between theoretical and experimental values were observed in germanate and tellurite glasses due to their low phonon energies, which caused the failure of the Boltzmann model. Phosphate glasses, with their high absolute thermometric sensitivity, are promising materials for luminescence thermometers.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Ceramics
S. Ghanavati, L. Petit, J. Massera
Summary: Phosphate glasses are promising alternative materials to replace traditional silicate bioactive glasses due to their controlled ion release behavior. A newly developed bioresorbable phosphate glass containing Sr and Mg demonstrated slower dissolution rate and maintained their ability for congruent dissolution and hot forming. The substitution of SrO for MgO effectively enhanced the sintering ability of the material, enabling the processing of scaffolds with mechanical properties above that of cancellous bone.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
Mikko Hongisto, Sonya Ghanavati, Arnaud Lemiere, Gregory Hauss, Shashank Boraiah, Louis Cornet, Angeline Poulon-Quintin, Dominique Pagnoux, Dominique Bernard, Jonathan Massera, Laeticia Petit, Veronique Jubera, Sylvain Danto
Summary: We have developed core-clad bioactive borosilicate fibers with round and rectangular cross-section profile by stacking and drawing glass slabs. Tens-of-meters-long fibers were successfully drawn, but rectangular ones suffered from elevated losses due to the enhanced corrosion caused by residual tensile stress. This study provides the first report on the effect of residual tensile stresses on the corrosion of rectangular fibers and highlights the importance of geometry in the biodegradation behavior of fiberglass.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Robert Mueller, Martin Lorenz, Alexander Veber, Roman Sajzew, Andre Kalide, Jens Kobelke, Anka Schwuchow, Luukas Kuusela, Lothar Wondraczek, Laetitia Petit, Katrin Wondraczek
Summary: In this study, silicate glass containing crystals were prepared by melting a mixture of YbPO4 xenotime structured crystals and SiO2 nanoparticles. The mixture was used to prepare large volume core preforms for laser active optical fiber. The integrity of the crystals in the preform and fiber were assessed through temperature dependent sintering and fiber drawing experiments. The survival of YbPO4 crystalline particles in silica was investigated using various techniques, showing that the particles withstand the high-temperature steps during the fiber fabrication process. However, partial decomposition of the crystals was observed during the fiber fabrication.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Materials Science, Multidisciplinary
Bartosz Bondzior, Chi Nguyen, T. H. Quan Vu, Przemyslaw J. Deren, Laeticia Petit
Summary: The method of directly introducing crystals of known chemistry, size, and optical properties into a glass matrix is useful in overcoming limitations in controlling crystal growth in glass-ceramics. By measuring changes in micro-luminescence spectra, it is possible to track the decomposition of crystals inside the composite material. It has been shown, for the first time, that adding Eu3+-doped LaPO4 crystals to phosphate fluoride glasses enhances the thermometric sensitivity of Eu3+ ions, making it promising for temperature sensing applications.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
