Article
Engineering, Electrical & Electronic
Yunsang Shin, Seung Geol Nam, Jinseong Heo, Sangwook Nam
Summary: This study proposes a new nonresonant method for accurately extracting the properties of thin dielectric by measuring the reflection coefficient of metal-insulator-metal (MIM) capacitors. The method is validated through equivalent circuit modeling and 3-D full-wave electromagnetic simulations. The experimental results demonstrate that the proposed method achieves high-accuracy characterization of the complex permittivity and loss tangent of high-k dielectrics in a broadband frequency range.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Chemistry, Physical
Jianxi Liu, Li Feng, Zhihuan Li, Yang Wu, Feng Zhou, Yadong Xu
Summary: Metal-organic frameworks (MOFs) based MIM cavities treated by plasma etching provide channels for chemical diffusion and demonstrate sensing behavior. Modulating the MOF thickness allows control of the MIM filter bandwidth. Plasma-etched MOFs-based MIM cavities show potential for chemical sensing. Patterned structures of MOFs-based MIM cavities can be generated via plasma-mask method.
Article
Engineering, Electrical & Electronic
Eduardo Moctezuma-Pascual, Reydezel Torres-Torres
Summary: This study presents a parameter extraction methodology for the microwave behavior of MIM capacitors, experimentally validated up to 60 GHz with different total effective areas, and successfully determines the permittivity of the thin film dielectric by applying the model after removing the effects introduced by the test fixture.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Materials Science, Multidisciplinary
Krzysztof Staninski, Malgorzata Kaczmarek
Summary: Spectroscopic studies were conducted on mesoporous alumina layers obtained by anodic oxidation in various solutions, revealing the influence of thermal treatment, electrolyte type, and excitation time on the emission spectra. Significant differences were found between the afterglow luminescence (A-Lum) and photoluminescence phenomena based on the kinetic parameters of emission decay curves and emission spectra.
Article
Optics
Jincheng Wang, Hengli Feng, Jingyu Zhang, Chang Liu, Zuoxin Zhang, Dongchao Fang, Lehui Wang, Yang Gao
Summary: This paper proposes a bilateral asymmetric equilateral triangular ring (ETR) band-stop filter based on metal-insulator-metal (MIM) waveguide and investigates its transmission spectrum and electric field distribution using finite difference time domain (FDTD) and coupled mode theory (CMT) method. The results show that changing the number and position of resonant cavities can adjust the transmission characteristics of the filter. The filter has a minimum transmission of 0.1% and a sensitivity of 1149 nm/RIU, making it suitable for highly integrated optical circuits and refractive index sensors.
Article
Engineering, Electrical & Electronic
Hao Yu, Jue Wang, Li Liu, Kuang Sheng
Summary: In this study, a metal-insulator-metal (MIM) capacitor with Al2O3 dielectric layer and TiN electrodes was fabricated using magnetron sputtering technology. The capacitor exhibited very low leakage current density and excellent voltage linearity, making it a promising candidate for power integrated circuits application.
SOLID-STATE ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Seyed Morteza Ebadi, Shiva Khani
Summary: This article presents the design and numerical investigation of an ultra-compact and highly-efficient plasmonic absorber based on metal-insulator-metal waveguides. The proposed device offers multiple narrow-band absorption at visible and near-infrared wavelengths, with peak absorbance ranging from 81% to 100%. Finite element method simulations show that the resonance wavelengths can be easily controlled by adjusting the coupling distances between the input and output ports and the triangular resonators. A parameterized genetic algorithm is utilized to optimize the structure size, maximize efficiency, and achieve narrow-band resonances. Given the obtained notable specifications, this structure can contribute to the development of miniaturized and efficient optical components for photonic integrated circuits.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Biochemistry & Molecular Biology
Li Xiong, Jin Hu, Zhao Yang, Xianglin Li, Hang Zhang, Guanhua Zhang
Summary: This study presents the construction and dielectric properties investigation of metal-insulator-metal capacitors based on atomic-layer-deposition Al2O3/TiO2/HfO2 dielectric films. The influence of dielectric layer material and thickness on the performance of the capacitors was systematically investigated. Among them, the 25 nm Al2O3-based dielectric capacitor exhibited superior electrical performance and stability.
Article
Nanoscience & Nanotechnology
Kirill Kamnev, Marcela Sepulveda, Maria Bendova, Zdenek Pytlicek, Jan Prasek, Eva Kolibalova, Jan Michalicka, Alexander Mozalev
Summary: An aluminum-on-zirconium bilayer is anodized in oxalic acid solution to create porous anodic alumina (PAA) and ZrO2 nanocolumns. By adjusting the re-anodizing voltage, the thickness of the nanostructured oxide and bottom oxide can be linearly increased, with a unique design of the bottom oxide for ideal dielectric performance.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Hsin-Jyun Lin, Chihiro Tamura, Koji Akiyama, Genji Nakamura, Hiroyuki Nagai, Hiroshi Watanabe
Summary: A method is proposed for analyzing the dielectric prebreakdown (DB) in a metal-insulator-metal (MIM) stacked polycrystalline high-k capacitor of TiN-TiO2-ZrO2-TiO2-TiN based on charge transport, stochastic trap-cluster generation, and percolation. The measured dielectric leakage current until breakdown is assumed to be comprised of transient transports under static fields such as direct tunneling, trap-assisted tunneling (TAT), and inelastic tunneling. The generated trap-cluster amplifies the stress-induced leakage current (SILC) and can form a critical path by electrically linking the cathode and anode throughout the dielectric. Prebreakdown is found to be most related to SILC and inelastic tunneling at a low electric field (<4 MV/cm) through careful analysis of the measured time-dependent dielectric leakage currents.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Chemistry, Multidisciplinary
Alla Vorobjova, Daria Tishkevich, Elena A. Outkina, Dmitry L. Shimanovich, Ihar U. Razanau, Tatiana Zubar, Anastasia A. Bondaruk, Ekaterina K. Zheleznova, Mengge Dong, Dalal A. Aloraini, M. Sayyed, Aljawhara H. Almuqrin, Maxim Silibin, Sergey Trukhanov, Alex Trukhanov
Summary: This paper discusses the formation of Ta2O5 pillars with Ni tips during thin porous anodic alumina through-mask anodization on Si/SiO2 substrates. It reveals the main mechanism of the formation of Ta2O5 pillars and observes the superparamagnetic behavior of the Ta2O5 nanopillars with Ni tips. These findings provide a theoretical and experimental basis for the development of novel functional nanomaterials.
Article
Nanoscience & Nanotechnology
Takashi Yanagishita, Hideaki Takai, Toshiaki Kondo, Hideki Masuda
Summary: SnO2 nanofibers with uniform diameters were successfully obtained using ordered anodic porous alumina as a spinneret and wet spinning followed by heat treatment. The monodisperse nanofiber structures were maintained even after heat treatment at 600 degrees C, showcasing the potential for precise fiber diameter control by changing the hole size of the spinneret. The obtained SnO2 nanofibers are expected to be useful in various functional devices.
Article
Optics
Hengli Feng, Jingyu Zhang, Zuoxin Zhang, Dongchao Fang, Jincheng Wang, Chang Liu, Tong Wu, Guan Wang, Lehui Wang, Lingling Ran, Yang Gao
Summary: This study proposes a novel band-stop metal-insulator-metal plasmonic waveguide filter that demonstrates high filtering efficiency and sensitivity. The relationship between the wavelength of the incident wave, the refractive index of the measured material, and the transmittance of the incident wave is simulated. The results show that the filter has significantly low transmittance at the dips and high sensitivity for detecting different materials.
OPTICS COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Samyuktha K. Reddy, Mandeep Singh
Summary: This study demonstrates the use of a MISIM waveguide structure for ethanol sensing, showing that in the presence of harmful ethanol, the electric field in a low refractive index slot undergoes a red-shift in wavelength. By adjusting the silicon porosity and physical dimensions, the red-shift can be controlled. The optimized sensor metrics obtained through simulations and the fabrication stages are described. The sensor is found to be feasible for ethanol detection in hazardous environments.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Daria Tishkevich, Alla Vorobjova, Anastasia A. Bondaruk, Elena S. Dashkevich, Dmitry L. Shimanovich, Ihar U. Razanau, Tatiana Zubar, Dmitry Yakimchuk, Mengge G. Dong, M. Sayyed, Hamoud H. Somaily, Denis A. Vinnik, Maxim Silibin, Sergei Trukhanov, Valery M. Fedosyuk, Alex Trukhanov
Summary: This article presents the results of studies on the wettability properties and preparation of porous anodic alumina (PAA) membranes with different pore sizes. The research found that the surface properties of alumina can be changed from hydrophilic to hydrophobic by adjusting the synthesis conditions. This study is of great significance in designing functional surfaces with tunable wettability.
