Article
Nanoscience & Nanotechnology
Minsu Kang, Jin Heesoo, Heonsu Jeon
Summary: Projection photolithography using extreme-ultraviolet light source is crucial for fabricating nanoscale patterns for electronic chips, but not necessary for photonics. A cost-effective and high-throughput lithographic technique for submicron pattern generation is in high demand. The maskless digital photolithography (MDPL) technique has shown promise in addressing this demand and has been successfully used to fabricate submicron periodicity photonic crystal patterns.
Article
Materials Science, Multidisciplinary
Xiao-Chen Sun, Xiao Hu
Summary: Theoretical analysis shows that topological ring-cavity (TRC) modes can be used for stable single-mode lasing, with significantly higher intensity compared to other modes. By injecting circularly polarized beams, specific TRC modes with desired orbital angular momentum can be selectively stimulated. Advanced semiconductor nanotechnologies can be utilized to fabricate topological lasers generating chiral laser beams ideal for novel photonic functions.
Article
Nanoscience & Nanotechnology
Melissa J. Goodwin, Cornelis A. M. Harteveld, Meint J. de Boer, Willem L. Vos
Summary: Periodic arrays of deep nanopores in silicon are important for silicon nanophotonics. Previous studies focused on achieving deep nanopores with high aspect ratios, but resulted in structural imperfections. This study aims to realize cylindrical nanopores for better comparison with theory and simulations. By optimizing etching parameters and implementing a multistep process, cylindrical nanopores with high aspect ratios were achieved, suitable for silicon nanophotonic structures.
Article
Materials Science, Multidisciplinary
Ida Tyschenko, Fedor Tikhonenko, Anton Gutakovskii, Vladimir Vdovin, Konstantin Rudenko, Vladimir Popov
Summary: In this study, high-resistance silicon layers were formed by CO+ ion implantation and subsequent annealing on silicon substrates. The structural and electric properties of the ion-implanted layers were investigated. The results showed the formation of 3C-SiC and 6H-SiC nanocrystals in the ion-implanted layers and the positive charge compensation in the buried SiO2 layer of a silicon-on-insulator structure. The origin of these results was discussed.
Article
Nanoscience & Nanotechnology
Simone Iadanza, Jesus Hernan Mendoza-Castro, Taynara Oliveira, Sharon M. Butler, Alessio Tedesco, Giuseppe Giannino, Bernhard Lendl, Marco Grande, Liam O'Faolain
Summary: This paper presents a novel design of high Q-factor silicon nitride (SiN) 1D photonic crystal (PhC) cavities side-coupled to curved waveguides, which can operate with both silica and air cladding. The etched 1D PhC cavity sidewalls angle is engineered to achieve high Q-factors over a wide range of upper cladding compositions, resulting in the highest calculated Q-factor for non-suspended asymmetric SiN PhC structures. The SiN PhC cavities are demonstrated to be used in hybrid external cavity laser configuration, enabling mode-hop free single mode laser operation with high power output and side-mode suppression ratios. Moreover, these devices are applied as compact and energy efficient optical sensors, exhibiting high sensitivity to refractive index changes in the surrounding medium.
Article
Materials Science, Multidisciplinary
Zichen Qin, Tao Liu, Duanduan Wan
Summary: A recent study investigated the impact of thermal noise-induced randomness on photonic band gaps (PBGs) in self-assembled photonic crystals. The study revealed that PBGs can exist in a two-dimensional photonic crystal composed of a self-assembled array of rods with square cross sections. Moreover, the introduction of positional or orientational randomness affects the PBGs, providing insights for PBG engineering and understanding the role of randomness in photonic crystals.
Review
Chemistry, Physical
Chao Li, Ji-Hong Zhao, Zhan-Guo Chen
Summary: This review focuses on the infrared absorption and detection mechanism of hyper-doped silicon achieved by ion implantation and pulsed laser annealing. It emphasizes the impact of chalcogens and transition metals on the infrared absorption properties of hyper-doped silicon. The latest research on the responsivity and external quantum efficiency of photodetectors based on hyper-doped silicon is reviewed, along with suggestions for improving infrared absorption and device performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Alexey Yu. Bobrovsky, Sergey Svyakhovskiy, Ilya V. Roslyakov, Alexey A. Piryazev, Dimitri A. Ivanov, Valery P. Shibaev, Martin Cigl, Vera Hamplova, Alexej Bubnov
Summary: Photo-tunable photonic structures filled with photochromic azobenzene-containing compounds were prepared and their properties were studied. Irradiation with polarized blue light resulted in spectral changes associated with photo-orientation of azobenzene moieties. The observed photoinduced split was reversible and could be fully recovered by heating. The prepared composites have great potential in photonics applications.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Hailong Liu, Hongtao Wang, Hao Wang, Jie Deng, Qifeng Ruan, Wang Zhang, Omar A. M. Abdelraouf, Norman Soo Seng Ang, Zhaogang Dong, Joel K. W. Yang, Hong Liu
Summary: In this study, a new strategy was devised to generate high-order photonic cavity modes upon side illumination on woodpile photonic crystals, enabling one-step printing of 3D photonic structural colors. The resulting colors are vivid, with a wide spectral range and large viewing angles, and do not require postprocessing or subwavelength features.
Article
Chemistry, Physical
Sara Almenabawy, Yibo Zhang, Andrew Flood, Rajiv Prinja, Nazir P. Kherani
Summary: The usage of ultrathin flexible silicon foil can further extend the functionality of silicon in building and vehicle-integrated photovoltaics. In this study, inverted pyramid photonic crystals are carved on silicon to enhance its absorption of near-infrared light. The results show that a small mesa width of 35 nm can achieve high optical performance, and even after removing over 90% of the silicon from thick Si wafers, high optical absorption is still observed.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Keisuke Watanabe, Hsin-Yu Wu, Jolly Xavier, Lovleen Tina Joshi, Frank Vollmer
Summary: On-chip silicon microcavity sensors have advantages in virus and biomolecule detection due to their compactness and enhanced light-matter interaction. This study proposes and demonstrates label-free single virus detection using silicon photonic crystal random cavities. The method does not require pre-fabricated defect cavities or optical couplers.
Review
Materials Science, Multidisciplinary
Dan Qu, Orlando J. Rojas, Bing Wei, Eyal Zussman
Summary: This article provides an overview of the fundamental design principles, responsive mechanisms, and practical applications of responsive chiral photonic CNC materials. The changes in properties of these materials under different stimuli are discussed, and novel applications such as colorimetric sensors and photonic actuators are described.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ruilian Chen, Dengchong Feng, Guojian Chen, Xudong Chen, Wei Hong
Summary: This study presents a rewritable chiral photonic paper formed by unique nano-crystals and polycations, allowing for controlled contrast in different wetting states and independent encoding of triple invisible information. High-resolution inkjet printing enables the reversible construction of full-color patterns on the film, while leveraging the characteristics of cellulose nanocrystals and liquid crystals for complex decryption processes.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Optics
Jorg Imbrock, Dominik Szalek, Simon Laubrock, Haissam Hanafi, Cornelia Denz
Summary: By controlling the temperature and spacing of the seeds with femtosecond laser pulses, specific two-dimensional nonlinear photonic structures can be efficiently formed in lithium niobate crystals.
Article
Physics, Multidisciplinary
E. R. MacQuarrie, C. Chartrand, D. B. Higginbottom, K. J. Morse, V. A. Karasyuk, S. Roorda, S. Simmons
Summary: This study focuses on the T radiation damage centers in silicon and successfully fabricates high concentration T center ensembles in the 220 nm device layer of silicon-on-insulator wafers. A method using spin-dependent optical transitions is developed to benchmark the characteristic optical spectral diffusion within these T center ensembles. The research shows that with minimal optimization, high densities of implanted T centers localized near the interface display characteristic levels of total spectral diffusion.
NEW JOURNAL OF PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Felix Beaudoin, W. A. Coish
Article
Nanoscience & Nanotechnology
Felix Beaudoin, Dany Lachance-Quirion, W. A. Coish, Michel Pioro-Ladriere
Article
Physics, Multidisciplinary
Felix Beaudoin, Alexandre Blais, W. A. Coish
NEW JOURNAL OF PHYSICS
(2017)
Article
Optics
J. Bourassa, F. Beaudoin, Jay M. Gambetta, A. Blais
Article
Materials Science, Multidisciplinary
Felix Beaudoin, W. A. Coish
Article
Materials Science, Multidisciplinary
J. D. Strand, Matthew Ware, Felix Beaudoin, T. A. Ohki, B. R. Johnson, Alexandre Blais, B. L. T. Plourde
Article
Multidisciplinary Sciences
Youngkyu Sung, Felix Beaudoin, Leigh M. Norris, Fei Yan, David K. Kim, Jack Y. Qiu, Uwe von Lupke, Jonilyn L. Yoder, Terry P. Orlando, Simon Gustaysson, Lorenza Viola, William D. Oliver
NATURE COMMUNICATIONS
(2019)
Article
Physics, Applied
Felix Beaudoin, Pericles Philippopoulos, Chenyi Zhou, Ioanna Kriekouki, Michel Pioro-Ladriere, Hong Guo, Philippe Galy
Summary: This study presents non-linear Poisson and Schrodinger simulations of an industrially fabricated gated quantum dot device at 100 mK using QTCAD software, showing convergence without user intervention for 10 random gate bias configurations. Results indicate potential wells consistent with experimental observations of corner quantum dots.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Ioanna Kriekouki, Felix Beaudoin, Pericles Philippopoulos, Chenyi Zhou, Julien Camirand Lemyre, Sophie Rochette, Salvador Mir, Manuel J. Barragan, Michel Pioro-Ladriere, Philippe Galy
Summary: The low-temperature behavior of an FD-SOI quantum dot device fabricated with standard manufacturing techniques was studied, with simulation and analysis conducted using QTCAD software, and the results compared with experimental data.
SOLID-STATE ELECTRONICS
(2022)
Article
Physics, Multidisciplinary
Francisco Riberi, Leigh M. Norris, Felix Beaudoin, Lorenza Viola
Summary: We study the achievable estimation precision of entanglement-enhanced Ramsey interferometry in the presence of spatiotemporally correlated non-classical noise. Our analysis explores the effects of a non-collective coupling regime between the qubit probes and their environment, and demonstrates that randomizing the location of the probes can suppress the effect of spatial correlations and restore superclassical precision scaling.
NEW JOURNAL OF PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Raphael J. Prentki, Mohammed Harb, Chenyi Zhou, Pericles Philippopoulos, Felix Beaudoin, Vincent Michaud-Rioux, Hong Guo
Summary: With the reduction of channel lengths in nanometer-scale transistors, direct source-to-drain tunneling (DSDT) becomes more prominent. Bound-charge engineering (BCE) offers a solution to reduce DSDT leakage by controlling the depletion lengths of FETs. This study demonstrates the effectiveness of BCE in reducing DSDT leakage in MOSFETs with channels as short as 2.3 nm.
SOLID-STATE ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Ioanna Kriekouki, Felix Beaudoin, Pericles Philippopoulos, Chenyi Zhou, Julien Camirand Lemyre, Sophie Rochette, Claude Rohrbacher, Salvador Mir, Manuel J. Barragan, Michel Pioro-Ladriere, Philippe Galy
Summary: This study investigates the attainment of single-electron regime in an UTBB FDSOI quantum dot device fabricated using STMicroelectronics' standard manufacturing process. Cryogenic temperature operation of the device is simulated and analyzed using the 3D QTCAD software developed by Nanoacademic Technologies, achieving convergence down to 1.4 K. Simulation results of single-electron occupancy of a single side-gate activated corner quantum dot are reported and compared to experimental data.
SOLID-STATE ELECTRONICS
(2023)
Article
Quantum Science & Technology
Uwe von Luepke, Felix Beaudoin, Leigh M. Norris, Youngkyu Sung, Roni Winik, Jack Y. Qiu, Morten Kjaergaard, David Kim, Jonilyn Yoder, Simon Gustavsson, Lorenza Viola, William D. Oliver
Article
Optics
Gerardo A. Paz-Silva, Leigh M. Norris, Felix Beaudoin, Lorenza Viola
Article
Optics
Felix Beaudoin, Leigh M. Norris, Lorenza Viola
Article
Optics
R. B. Adamov, G. A. Melentev, I. V. Sedova, S. V. Sorokin, G. V. Klimko, I. S. Makhov, D. A. Firsov, V. A. Shalygin
Summary: This study investigates the THz luminescence in doped nanostructures with GaAs/AlGaAs quantum wells under interband optical pumping. The results show that the spatial separation of donors and acceptors can greatly enhance the integrated intensity of THz emission.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yanru Li, Lei Zhong, Sha Jiang, Yutong Wang, Binyao Huang, Guotao Xiang, Li Li, Yongjie Wang, Chuan Jing, Xianju Zhou
Summary: In this study, a ratiometric luminescent thermometry based on dual-emission centers was developed using co-doped CaNb2O6 phosphors with Bi3+ and Pr3+. The obtained samples exhibited good thermosensitive and thermochromic characteristics, with a maximum absolute sensitivity of 0.09 K-1 @ 528 K and a maximum relative sensitivity of 2.17 % K-1 @ 453 K.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yujing Gong, Yeqing Wang, Zhiyuan Wang, Yijian Sun, Yi Yu
Summary: Single crystals of Dy3+ single-doped and Dy3+/Tb3+ co-doped CaYAlO4 were grown and analyzed. The incorporation of Tb3+ resulted in increased absorption and emission cross sections. The fluorescence lifetimes and branching ratios of the yellow emission were affected by the presence of Tb3+. The deactivation effect of Tb3+ ions and energy transfer mechanism were also discussed.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Lu Chen, Zhuangzhuang Ma, Jian Chen, Wang Guo
Summary: This study focuses on enhancing the thermal robustness of phosphor converter materials by preparing composite ceramics of YAG:Ce combined with high-thermal-conductivity MgO. The composite ceramics showed high density and thermal conductivity at the optimum temperature of 1400℃. Stable laser-driven white light was obtained under blue laser excitation.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yuwei Wu, Chunhui Niu, Lei Wang, Mingqing Yang, Shiyu Zhang
Summary: Er3+-doped germanate-tellurite glasses were prepared and their structure, luminescent, and temperature-sensing properties were studied. The glass exhibited large values of O2 and O6 and its luminescence intensity varied with temperature.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Kensei Ichiba, Takumi Kato, Kenichi Watanabe, Yuma Takebuchi, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Eu-doped YVO4 single crystals with different concentrations were fabricated to evaluate their photoluminescence and scintillation properties. The results showed that the samples doped with Eu exhibited emission peaks due to 4f-4f transitions in PL and scintillation spectra. Based on the pulse height spectra, the light yield of the Eu-doped samples increased with increasing Eu concentration, while the afterglow level decreased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Daiwen Xiao, Hei-Yui Kai, Anjun Huang, Menglin Song, Ka-Leung Wong, Peter A. Tanner
Summary: The emission spectra of Cs2NaEuCl6 nanoparticles synthesized by the hot injection method are explained. The dispersion of the nanoparticles in alkane solvents in the experiment allows the determination of the magnetic dipole radiative rate for the D-5(0) -F-7(1) channel in vacuum, which is in agreement with the calculated value.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Italia V. Barbosa, Geraldine Dantelle, Alain Ibanez, Lauro J. Q. Maia
Summary: The thermal response and luminescence properties of different oxide matrices were evaluated to design more accurate thermal probes. It was found that thermal probes emitting in BW-II provide better thermal sensing with higher signal-to-noise ratio. Additionally, doping Nd3+ in Y2O3 matrix maximizes luminescence intensity, making it a promising matrix for thermal sensing.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xin Li, Yu Zhang, Hongrui Ren, Lunlong Xie, Yinsheng Di, Mengqing Han, Zhaohui Bai, Quansheng Liu, Liangliang Zhang, Jiahua Zhang
Summary: This study successfully prepared phosphor samples based on Ca3-xLuxSc2-xMgxSi3O12:Ce3+ and investigated their luminescence properties. With the increase in Lu-Mg concentration, the peak of the sample redshifted, but the thermal stability gradually decreased. The LD devices made from CLSMS:Ce3+ fluorescent materials showed a decrease in cyan-green light and an increase in red light as the Lu-Mg concentration increased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Tim Pier, Julia Hopster, Thomas Juestel
Summary: This study investigates and reports on several samples of cerium-activated gallium-based garnet phosphors. The optimal activator concentration was found to be 1 atom-%. The size of non-emitting lanthanide ions and the molar concentration of cerium strongly influenced the crystal field splitting, which in turn shaped the excitation and emission wavelengths.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Guijie Zhao, Wei Shi, Xin Xin, Fengcai Ma, Yongqing Li
Summary: This study reveals for the first time the proton transfer pathways and changes in the photophysical properties of P-TNS with three intramolecular hydrogen bonds. The reaction mechanism and driving force for the proton transfer process are explained through analysis of potential energy surface, frontier molecular orbitals, and hydrogen bond parameters, among others.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Li He, Jinshu Huang, Zhengce An, Haozhang Huang, Yu Zhao, Kexin Zhong, Bo Zhou
Summary: In this study, we designed a NaYF4:Yb3+/Tm3+@NaYF4 core-shell nanostructure to achieve thermochromic upconversion and high thermal sensitivity. We found that the blue upconversion emission of Tm3+ decreased while the deep-red emission increased with elevating temperature. The sample also showed a gradual emission color change from blue to purplish-red, and the optimal relative sensitivity reached 2.79% K-1.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Rupesh A. Talewar
Summary: A series of Li2TiO3 phosphors doped with Mn4+ and codoped with Mn4+ and Er3+ were synthesized, which demonstrated the ability of Mn4+ ions to absorb UV-Vis photons and subsequently transfer energy to Er3+ ions, resulting in the emission of near-infrared light. These materials have the potential to enhance the absorption efficiency of Er3+-based luminescent materials.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xingyuan Ma, Jianfeng Li
Summary: Carbon quantum dots (CQDs) with tunable photoluminescence properties have been synthesized using suitable carbon and dopant sources in an aqueous system. The synthesized CQDs exhibited blue, green, yellow, and red emissions, and solid-state luminescence was achieved through the preparation of solid-state fluorescent films and phosphors. This study provides important technical support for the future development of CQDs synthesis.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
De Bin Fu, Yang Bing Xu, Yu Teng Zhang, Shan Ting Liu, Xiao Fei Yang, Sheng Hua Liu
Summary: A pair of new chiral molecules, (S)-4 and (R)-4, have been designed and synthesized by introducing valine-containing groups at symmetrical positions on the periphery of an indolo[3,2-b]carbazole unit. These molecules exhibit aggregation-induced circular dichroism (AICD) properties in DMF/water mixtures, and in a mixture with 99% water fraction, they show strong, mirror-image, blue circularly polarized luminescence (CPL) signals.
JOURNAL OF LUMINESCENCE
(2024)