Article
Engineering, Electrical & Electronic
Yang Mei, Minchao Xie, Hao Long, Leiying Ying, Baoping Zhang
Summary: This study demonstrates a new approach to fabricating III-nitride microdisk lasers on Si, which can avoid the issues of low crystal quality and large thickness in traditional Si-based photonic devices. The devices fabricated by this method achieved a high quality (Q) value of 12543 at 412.9 nm and demonstrated room temperature lasing.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Optics
Jiaxin Gu, Jie Liu, Ziqi Bai, Han Wang, Xinyu Cheng, Guanyu Li, Menghua Zhang, Xinxin Li, Qi Shi, Min Xiao, Xiaoshun Jiang
Summary: This study demonstrates the fabrication of ultrahigh quality silica microdisk resonators with an intrinsic Q factor as high as 1.94 x 10^8 on a silicon chip using ICP etching. The chip-based microresonator platform operating in the ultrahigh-Q region is expected to be beneficial for nonlinear photonics applications such as Brillouin lasers and Kerr microcombs.
PHOTONICS RESEARCH
(2021)
Article
Physics, Applied
N. V. Kryzhanovskaya, K. A. Ivanov, N. A. Fominykh, S. D. Komarov, I. S. Makhov, E. I. Moiseev, J. A. Guseva, M. M. Kulagina, S. A. Mintairov, N. A. Kalyuzhnyy, A. I. Lihachev, R. A. Khabibullin, R. R. Galiev, A. Yu. Pavlov, K. N. Tomosh, M. V. Maximov, A. E. Zhukov
Summary: This study reports on the lateral connection of InGaAs/GaAs quantum dot injection microdisk lasers with a bus waveguide using planar technology. Different coupling schemes were studied, and it was found that the coupling with the waveguide resulted in an increase in resonator loss and a decrease in the number of resonance lines. Additionally, efficient light outcoupling was demonstrated for continuous wave operating microdisk lasers at high temperatures.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Hao Jia, Jonathan P. Mccandless, Hailong Chen, Wenjun Liao, En Xia Zhang, Michael Mccurdy, Robert A. Reed, Ronald D. Schrimpf, Michael L. Alles, Philip X. L. Feng
Summary: Circular microdisk mechanical resonators in various resonance modes are essential for technologies such as photonics, cavity optomechanics, optical metrology, and quantum optics. The study focuses on the investigation of proton radiation effects on microdisk resonators made of 3C-SiC thin film. Results show consistent downshifts in resonance frequencies and attribute the frequency changes to radiation-induced Young's modulus change. These findings expand our understanding of proton radiation effects and have potential applications in harsh-environment sensing and integrated photonics.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Engineering, Electrical & Electronic
Liping Zhang, Shibin Zhang, Hulin Yao, Jinbo Wu, Pengcheng Zheng, Dan Ling, Kai Huang, Xin Ou
Summary: In this study, a method to reduce acoustic energy loss and demonstrate GHz ultra-high Q acoustic wave resonators based on the LTOSiC substrate has been proposed. By modulating the ratio of the LiTaO3 film thickness to interdigital transducer pitch, the adjoined polarization components of the guided SH-SAW can be diminished, reducing the acoustic energy loss effectively. The modulated dispersive SH-SAW resonator shows excellent Bode-Q and FoM values, indicating the feasibility of developing low-loss acoustic devices for wireless communications on the LTOSiC substrate.
IEEE ELECTRON DEVICE LETTERS
(2023)
Correction
Optics
Xuelei Zhang, Chenfeng Zhou, Ye Luo, Zhen Yang, Wei Zhang, Lan Li, Peipeng Xu, Peiqing Zhang, Tiefeng Xu
Summary: This passage corrects an error in [Opt. Express 30, 3866 (2022)], Fig. 6(c), stating that the vertical axis should be in arbitrary units instead of dB. All the conclusions remain unchanged after the correction.
Article
Materials Science, Multidisciplinary
Victor A. Soltamov, Boris Yavkin, Andrey N. Anisimov, Harpreet Singh, Anna P. Bundakova, Georgy Mamin, Sergei B. Orlinskii, Evgeniy N. Mokhov, Dieter Suter, Pavel G. Baranov
Summary: The study demonstrates coherent spin manipulations of spin-3/2 color center ensembles in 6H-SiC crystal under high magnetic fields, showing room temperature control and a decrease in relaxation times T-1 and T-2 with increasing temperature and magnetic field strength. The experiments also reveal the potential for optically detecting the spin alignment between M-S = +/- 3/2 in spin-3/2 color centers through optically pumped silent M-S = +/- 1/2 sublevels, including the observation of Rabi oscillations.
Article
Materials Science, Ceramics
Seong-Gun Bae, Minkyoung Oh, Yoonjoo Lee, Sanghun Kim, Yeong-Geun Jeong, Jung-Min Lee, Jungil Kim, Dong-Geun Shin
Summary: This study aims to improve the high-temperature creep characteristics of polycrystalline silicon carbide fibers by dispersing hafnium carbide nanocrystals in crystalline silicon carbide fibers. The results confirmed that hafnium carbide was uniformly dispersed, and that the crystal size grew to approximately 40 nm at a sintering temperature of 2000 degrees C.
CERAMICS INTERNATIONAL
(2022)
Review
Chemistry, Multidisciplinary
Tuan Kien Nguyen, Sadegh Aberoumand, Dzung Viet Dao
Summary: This review discusses the latest advances and advantages of silicon-based and silicon carbide-based supercapacitors in the field of energy storage, as well as future research directions.
Article
Engineering, Electrical & Electronic
Jinbo Wu, Shibin Zhang, Hongyan Zhou, Pengcheng Zheng, Liping Zhang, Zhongxu Li, Yuxi Wang, Tiangui You, Kai Huang, Tao Wu, Xin Ou
Summary: This study introduces a new class of High-overtone Bulk Acoustic Resonators (HBARs) with only top electrodes but excellent performance, utilizing lithium niobate thin films on conductive silicon carbide. The devices exhibit a wide frequency response range, high f·Q value, and low temperature coefficient of frequency (TCF). Adjustment of the in-plane orientation of the top electrodes can change the frequency response of the resonator. A multi-band filter based on these HBARs shows promising potential for radio-frequency applications.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Pablo Guzman, Toan Dinh, Afzaal Qamar, Jaesung Lee, X. Q. Zheng, Philip Feng, Mina Rais-Zadeh, Hoang-Phuong Phan, Thanh Nguyen, Abu Riduan Md Foisal, Huaizhong Li, Nam-Trung Nguyen, Dzung Viet Dao
Summary: This paper introduces a new concept of bi-layered monolithic silicon carbide resonators that utilize thermal-piezoresistive pumping to boost the quality factor. The device operates through electrothermal actuation and the structural stress modulates the electrothermal force via the piezoresistive effect. The unique design of the double SiC layer allows energy to be pumped into the system, resulting in an enhancement of the effective quality factor.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Instruments & Instrumentation
Toshiro Mifune, Todor M. Mishonov, Nikola S. Serafimov, Iglika M. Dimitrova, Riste Popeski-Dimovski, Leonora Velkoska, Emil G. Petkov, Albert M. Varonov, Alberto Barone
Summary: A tunable high-Q resonator is implemented in the General Impedance Converter (GIC) schematic, with the frequency dependence of GIC impedance derived in the framework of operational amplifier open-loop gain. The explicit formulas for resonance frequency and Q-factor consider the crossover frequency of the operational amplifier as an inherent parameter, and voltage measurements using a lock-in amplifier validate the derived formulas.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Engineering, Electrical & Electronic
Yan Xu, Tingyu Liu, Songyue Liu, Xiaoqiang Sun, Daming Zhang
Summary: In this work, high-Q silicon dual-concentric MRR and racetrack resonators were investigated using the coupled mode theory. CMOS fabrication was used, and the Q-factors of the two resonators were measured. The experimental results showed that the asymmetry of resonance splitting can be tuned by adjusting the distance between the inner-ring and outer-ring, as well as the waveguide width.
IEEE PHOTONICS JOURNAL
(2022)
Article
Optics
Yaojing Zhang, Gaolei Hu, Keyi Zhong, Wen Zhou, Hon Ki Tsang
Summary: Pump powers were investigated for their influence on silicon microresonator-based Kerr comb generation, showing that low pump powers and reverse bias are essential for efficient comb spectrum. Increasing pump powers can suppress Kerr comb generation and produce similar comb lines as low pump powers under certain conditions.
Article
Optics
Khadijeh Miarabbas Kiani, Henry C. Frankis, Cameron M. Naraine, Dawson B. Bonneville, Andrew P. Knights, Jonathan D. B. Bradley
Summary: This research presents a new method for achieving optical gain and lasing on a silicon photonics platform, which allows for low-cost, high-volume manufacturing and co-integration with silicon devices.
LASER & PHOTONICS REVIEWS
(2022)
Article
Physics, Applied
Jaesung Lee, Matthew D. LaHaye, Philip X. -L. Feng
Summary: This study reports on the analysis and design of atomically thin graphene resonant nanoelectromechanical systems (NEMS) with anharmonicity in the quantum regime. The study provides design guidelines and scaling parameters for graphene NEMS with desired nonlinear dynamical characteristics. The results open possibilities for a new type of 2D resonant NEMS qubits.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Wen Sui, Xu-Qian Zheng, Ji-Tzuoh Lin, Jaesung Lee, Jim L. Davidson, Robert A. Reed, Ronald D. Schrimpf, Bruce W. Alphenaar, Michael L. Alles, Philip X-L Feng
Summary: GaN is an excellent material for MEMS due to its outstanding electrical and mechanical properties. This study investigates the effects of ion radiation-induced displacement damage on GaN/AlN resonant MEMS, revealing a significant decrease in resonance frequencies and visible deformation at high fluence due to changes in Young's modulus and built-in stress.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2022)
Article
Physics, Applied
Jaesung Lee, Steven W. Shaw, Philip X. -L. Feng
Summary: This study experimentally demonstrates giant parametric amplification and spectral linewidth narrowing in atomically thin NEMS resonators. These findings suggest rich opportunities for controlling oscillations in 2D NEMS through parametric and nonlinear effects, opening up possibilities for creating high-performance, thin resonators and oscillators for signal transduction and sensing.
APPLIED PHYSICS REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Wen Sui, Haoran Wang, Jaesung Lee, Afzaal Qamar, Mina Rais-Zadeh, Philip X. -L Feng
Summary: This study demonstrates the experimental performance of aluminum scandium nitride (AlScN)-on-cubic silicon carbide (SiC) heterostructure thin film micromachined resonant transducers at high temperatures up to 600 degrees C. The investigation of macroscopic and microscopic vibrations using ultrasensitive laser interferometry and Raman spectroscopy reveals the temperature coefficients of resonance frequency and the potential applications of higher-order modes as high-temperature-tolerant sensors or detectors. The correlation between the phonon modes and temperature variation suggests the role of residual strain in mediating the vibrations in the crystal lattice and the diaphragm.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Rui Yang, S. M. Enamul Hoque Yousuf, Jaesung Lee, Pengcheng Zhang, Zuheng Liu, Philip X. -L. Feng
Summary: This study experimentally demonstrates dynamical phonon softening in atomically thin molybdenum disulfide (MoS2) NEMS resonators by directly coupling Raman spectroscopy with optical interferometry resonance motion detection. High-amplitude nonlinear resonances can enhance the Raman signal amplitude and introduce Raman modes softening up to 0.8 cm(-1).
Article
Engineering, Electrical & Electronic
Pablo Guzman, Toan Dinh, Afzaal Qamar, Jaesung Lee, X. Q. Zheng, Philip Feng, Mina Rais-Zadeh, Hoang-Phuong Phan, Thanh Nguyen, Abu Riduan Md Foisal, Huaizhong Li, Nam-Trung Nguyen, Dzung Viet Dao
Summary: This paper introduces a new concept of bi-layered monolithic silicon carbide resonators that utilize thermal-piezoresistive pumping to boost the quality factor. The device operates through electrothermal actuation and the structural stress modulates the electrothermal force via the piezoresistive effect. The unique design of the double SiC layer allows energy to be pumped into the system, resulting in an enhancement of the effective quality factor.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Engineering, Electrical & Electronic
Jaesung Lee, Michael W. McCurdy, Robert A. Reed, Ronald D. Schrimpf, Michael A. Alles, Philip X. -L. Feng
Summary: We report on the in situ measurement of proton radiation effects on single-crystal silicon comb-drive resonant MEMS devices. The resonators exhibit highly sensitive responses in resonance characteristics while maintaining robust operations. Based on the TRIM simulations, the observed radiation effects on resonance frequency could be attributed to a combination of ionizing and displacement damage effects. These in situ observations of radiation effects on comb-drive MEMS resonators show the promising potential of dynamic MEMS for new types of radiation sensors or radiation-hardened signal processing components.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Tahmid Kaisar, Jaesung Lee, Donghao Li, Steven W. Shaw, Philip X. -L. Feng
Summary: This study reports on the nonlinear dynamic characteristics of ultimately thin nanomechanical resonators built upon single-layer, bilayer, and trilayer molybdenum disulfide vibrating membranes. Through experimental measurements and quantitative analyses, the nonlinear damping and stiffness coefficients at cubic and quintic orders were determined for these two-dimensional resonators. The study highlights the importance of considering the quintic force in nonlinear dynamics analysis.
Article
Chemistry, Multidisciplinary
Fan Ye, Arnob Islam, Yanan Wang, Jing Guo, Philip X. -L. Feng
Summary: This work presents experimental demonstrations of reversible crystalline phase transition in ultrathin molybdenum ditelluride (MoTe2) controlled by thermal and mechanical mechanisms on the van der Waals (vdW) nanoelectromechanical systems platform. The phase transition is triggered by rising temperature and strain level, and can be monitored in situ using Raman spectroscopy. The results not only deepen the understanding of MoTe2 phase transition, but also demonstrate a novel platform for engineering MoTe2 phase transition and multiphysical devices.
Article
Chemistry, Multidisciplinary
Fan Ye, Qingchang Liu, Baoxing Xu, Philip X. -L. Feng, Xian Zhang
Summary: Heat dissipation is a major problem in high-performance electronics, especially in emerging nanoelectronic devices. This study reports ultra-high interfacial thermal conductance in encapsulated van der Waals heterostructures, which can significantly enhance thermal transport. The experimental results show that the interfacial thermal conductance between the transition metal dichalcogenides MX2 and hexagonal boron nitride (hBN) reaches 74 +/- 25 MW m(-2) K-1, at least ten times higher than non-encapsulation structures. Molecular dynamics calculations reveal that the full encapsulation by hBN layers is responsible for the high interfacial conductance. This study uncovers new thermal transport mechanisms and provides insights for building hBN-encapsulated nanoelectronic devices with improved thermal management.
Article
Acoustics
Tahmid Kaisar, S. M. Enamul Hoque Yousuf, Jaesung Lee, Afzaal Qamar, Mina Rais-Zadeh, Soumyajit Mandal, Philip X. -L. Feng
Summary: We report the first experimental demonstration of five self-sustaining feedback oscillators referenced to a single multimode resonator using piezo-electric aluminum nitride on silicon (AlN/Si) microelectro- mechanical systems (MEMS) technology. The integrated piezoelectric transduction enables efficient readout of five resonance modes of the same AlN/Si MEMS resonator, and their mode-dependent phase noise and frequency stability are measured and analyzed. The overall promising performance of the five oscillators suggests suitability for multimode resonant sensing and real-time frequency tracking.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2023)
