Article
Chemistry, Analytical
Xing Xiao, Cheng Li, Shang-Chun Fan, Yu-Jian Liu, Yang Liu
Summary: This paper presents an optical-thermally actuated multi-layer graphene resonator for humidity sensing. The 10-layered graphene resonator, with a diameter of 125 μm, was clamped on the fiber ferrule end face and actuated to vibrate using an intensity-modulated laser. The humidity sensing experiment showed a humidity sensitivity of up to 350 Hz/%RH, which was 10 times higher than the Quartz Crystal Microbalance (QCM)-based humidity sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Engineering, Electrical & Electronic
Xicai Yue, Janice Kiely, Richard Luxton, Boyang Chen, Chris N. McLeod, Emanuel Manos Drakakis
Summary: This article proposes a bio-sensing scheme that uses a surface acoustic wave resonator connected to a capacitive biosensor to acquire impedance information. The scheme is suitable for wearable applications, requiring no power supply to the biosensor node. Experimental results demonstrate that the scheme can passively detect changes in the impedance of the biosensor, and the resonant frequency of the SAW resonator-coupled biosensor changes when liquid samples with concentrations of C-Reactive Protein (CRP) are applied. The technique shows potential for applications where zero-power requirement and RF transmission are advantageous.
IEEE SENSORS JOURNAL
(2022)
Article
Computer Science, Interdisciplinary Applications
Xin-Yu Liu, Jia-Jun Liang, Zhao Wu, Yan-Hu Huang, Wei Wu, Lin-Ping Feng, Yong Liang, Xiang-Suo Fan
Summary: This article presents a cost-effective method for fluid concentration sensing using a step impedance resonator (SIR) and loading dielectrics to shift the frequency resonant zero. The proposed biosensor consists of SIRs and a microfluidic channel, with electromagnetic numerical simulation verifying the theory and testing glucose solutions of different concentrations to demonstrate feasibility.
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
(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
Computer Science, Theory & Methods
Tian J. Ma
Summary: Big data in remote sensing is growing rapidly, with challenges in real-time detection of small moving targets due to long distances and low signal-to-noise ratios. The traditional baseline detection technique may lead to an increase in false alarms. Introducing a new method can improve the probability of detecting low SNR objects while reducing false alarms.
JOURNAL OF BIG DATA
(2021)
Article
Nanoscience & Nanotechnology
Aleksei Anopchenko, Sudip Gurung, Subhajit Bej, Ho Wai Howard Lee
Summary: Using electrodynamical description, an expression for the electric-field intensity enhancement (FIE) due to epsilon-near-zero (ENZ) polariton modes is presented. The study shows that FIE reaches a limit in ultrathin ENZ films, inversely proportional to ENZ losses. The research also predicts high values of FIE in ultrathin polar semiconductor films.
Article
Acoustics
Tinggui Chen, Junrui Jiao, Dejie Yu
Summary: The detection and localization of acoustic signals are important in many areas, but achieving both high sensitivity and high directivity in an acoustic system remains a challenge. This study proposes a structure that combines phononic crystal point defects with four-sided Helmholtz resonators to enhance acoustics and enable directional sensing. The proposed structure surpasses the detection limit of conventional acoustic sensing systems and provides a new method for developing coupled acoustic sensing devices.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Chemistry, Analytical
Pascal M. Weber, Ulrike Wallrabe, Matthias C. Wapler
Summary: We present a method for self-sensing a magnetically actuated prism, eliminating the need for additional sensors in a feedback loop. By determining the optimal measurement frequency and developing a combined actuation and measurement driver, we demonstrate accurate measurement of the prism's tilt angle with an accuracy of +/-0.1 degrees in the polar angle and +/-20 mrad in the azimuthal angle.
Article
Physics, Multidisciplinary
Eistiak Ahamed, Mohammad Rashed Iqbal Faruque, Ahmed Mahfuz Tamim, Mohammad Tariqul Islam, Mohd Fais Bin Mansor, Mohammad Badal Ahmmed
Summary: In this work, a narrow metal strip inspired by left-handed metamaterial and sensitive LC resonator structure is designed for microwave sensing applications, exhibiting high sensitivity and field enhancement effects. The proposed metamaterial tunnelling structure is potentially useful for various sensing applications.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Computer Science, Information Systems
Kicheol Yoon, Kwanggi Kim
Summary: With the increasing demand for portable wireless communication systems in small sizes, the performance, size, and unit cost are crucial factors to consider. Band-pass filters play an important role in achieving sharp cut-off frequency characteristics, size reduction, and frequency selectivity in wireless communication systems. Different techniques such as the transmission-zero method, stub-loaded resonator, and stepped impedance resonator are utilized to achieve specific characteristics in band-pass filters.
Article
Physics, Applied
Miguel Beruete, Nader Engheta, Victor Pacheco-Pena
Summary: This study investigates an all metallic sensor based on epsilon-near-zero (ENZ) metamaterials at microwave frequencies. The performance of the sensor is evaluated by placing subwavelength dielectric analytes within the ENZ waveguide. The sensor demonstrates high sensitivities in detecting deeply subwavelength dielectric bodies.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
Hodjat Hajian, Ivan D. Rukhlenko, Veysel Ercaglar, George Hanson, Ekmel Ozbay
Summary: This study comprehensively analyzes the near-field radiative heat transfer between black phosphorous (BP) flakes and demonstrates that covering the BP flakes with hexagonal boron nitride (hBN) films significantly enhances the heat transfer. The heat transfer can be actively switched by changing the chemical potential of the BPs and can be modified by altering the number of BP layers. Additionally, replacing hBN with alpha-MoO3 modifies the spectral and intensity of the near-field radiative heat transfer.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
A. Pricoupenko, D. S. Petrov
Summary: This study develops perturbation theory for bosons interacting through a weak two-body potential V with attractive and repulsive components that cancel each other out. The leading nonpairwise energy contribution arises in the third order of V, presenting an effective three-body interaction. This interaction is generally found to exhibit an opposite sign to the long-range tail of V, and the theory is applied to specific two-body potentials for calculating interaction corrections. The approach is shown to be consistent with the many-body Bogoliubov treatment.
Article
Optics
Mina Vafaei, Mahmood Moradi, Gholam Hossein Bordbar
Summary: A highly sensitive refractive index sensor was designed using a MDM nanostructured thin film, achieving high sensitivity and tunability in the near-infrared region. Numerical simulations confirmed the MDM thin film as an ENZ metamaterial, with experimental results verifying its sensitivity and small footprint advantages. This sensor shows promise for future nanosensing applications such as plasmonic metamaterial sensors.
Article
Physics, Applied
Baozhu Cheng, Xinyu Guo, Nansha Gao, Hong Hou
Summary: This paper proposes the methods of porous material filling and micro-perforated plate embedding to design a perfect sound absorber at different frequencies using the under-loss Helmholtz resonator. The theoretical calculation models of the sound absorption coefficients are constructed and verified. Experimental results show the effectiveness of the designed acoustic absorbers, providing reference for low-frequency broadband noise attenuation designs.
MODERN PHYSICS LETTERS B
(2022)
Article
Acoustics
Dong Kyun Kim, Jun Kyu Lee, Hong Min Seung, Chung Il Park, Yoon Young Kim
Article
Instruments & Instrumentation
Kiyean Kim, Hyung Jin Lee, Chung Il Park, Hyuk Lee, Yoon Young Kim
SMART MATERIALS AND STRUCTURES
(2019)
Article
Instruments & Instrumentation
Chung Il Park, Hong Min Seung, Jun Kyu Lee, Yoon Young Kim
SMART MATERIALS AND STRUCTURES
(2019)
Article
Acoustics
Chung Il Park, Hong Min Seung, Yoon Young Kim
Article
Engineering, Multidisciplinary
Byungseong Ahn, Hyuk Lee, Joong Seok Lee, Yoon Young Kim
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2019)
Article
Physics, Applied
Mingye Zheng, Chung Il Park, Xiaoning Liu, Rui Zhu, Gengkai Hu, Yoon Young Kim
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Applied
Min Soo Kim, Woorim Lee, Chung Il Park, Joo Hwan Oh
PHYSICAL REVIEW APPLIED
(2020)
Article
Engineering, Mechanical
Chung Il Park, Chunguang Piao, Hyuk Lee, Yoon Young Kim
Summary: A new complementary meta-layer (CML) is proposed to enhance ultrasound transmission efficiency by canceling out barriers of diverse impedances. Numerical simulations show significantly improved ultrasound transmission efficiency, suggesting groundbreaking potential for various ultrasound applications.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Engineering, Mechanical
Jeseung Lee, Minwoo Kweun, Woorim Lee, Chung Il Park, Yoon Young Kim
Summary: A novel theory for perfect transmission across solid-solid interfaces is established, and a unique nonresonant anisotropic metamaterial is proposed to realize the theory. The validity of the theory is verified through experiments, and transmittance enhancement over a wide range of frequencies and incidence angles is confirmed.
EXTREME MECHANICS LETTERS
(2022)
Article
Automation & Control Systems
Byung Chang Jung, Seok-jun Moon, Sang Hyuk Lee, Hyuk Lee, Jin-woo Park, Yun-ho Shin
Summary: This study proposes an autonomous recovery system for pipeline systems in naval ships to quickly detect and isolate unexpected damage. By using a multistage control algorithm and support vector machine design procedure, the reliability of the system is enhanced. The effectiveness of the algorithm is demonstrated through flow simulations and experiments.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2022)
Article
Engineering, Mechanical
Hong Jae Kim, Chung Il Park, Kiyean Kim, Yoon Young Kim
Summary: In this study, a metamaterial ring (meta-ring) was proposed to enhance the emission efficiency of omnidirectional SH elastic wave sources. The meta-ring, designed based on the mechanical behavior of the discrete mass-spring model, was installed independently around the transducer. The physics behind the emission enhancement were interpreted using homogenization, and two principles, a low impedance condition and a Fabry-Perot resonance, were elucidated. Experiments confirmed that the meta-ring increased the emission efficiency of the transducer by over 250%, highlighting its critical importance in wide-area wave-based non-destructive evaluation.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
