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Journal articles on the topic 'Thin Film Filter (TFF)'

Author: Grafiati

Published: 7 September 2021

Last updated: 29 July 2025

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1

Saǧ, Emirhan, Abdurrahman Günday, and Güneş Yılmaz. "Influence of temperature on detectable minimum rotation rate in i-FOGs using Er-doped SFSs." Journal of Electrical Engineering 73, no. 2 (2022): 146–51. http://dx.doi.org/10.2478/jee-2022-0019.

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Abstract In this study, an interferometric fiber optic gyroscope (I-FOG) model exploiting the double-pass backward (DPB) erbium-doped superfluorescent fiber source (SFS) with both thin-film filter (TFF) and fiber bragg grating (FBG) reflectors has been constructed and the effects of temperature variations on mean wavelength and detectable minimum rotation rate (DMRR) have been theoretically analyzed. the simulations corresponding with the relations between these parameters for temperature variations in the range of −60 °C to + 90 °C, have been performed using Matlab 2021b. DMRR variations have

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Guan, Chongrui, and Xingli He. "Laterally Excited Resonators Based on Single-Crystalline LiTaO3 Thin Film for High-Frequency Applications." Micromachines 15, no. 12 (2024): 1416. http://dx.doi.org/10.3390/mi15121416.

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High-performance acoustic resonators based on single-crystalline piezoelectric thin films have great potential in wireless communication applications. This paper presents the modeling, fabrication, and characterization of laterally excited bulk resonators (XBARs) utilizing the suspended ultra-thin (~420 nm) LiTaO3 (LT, with 42° YX-cut) film. The finite element analysis (FEA) was performed to model the LT-based XBARs precisely and to gain further insight into the physical behaviors of the acoustic waves and the loss mechanisms. In addition, the temperature response of the devices was numericall

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3

Muhammad, Farah Diana, Raba’ah Syahidah Azis, and Fauzan Ahmad. "64 nm continuously tunable graphene-mode-locked erbium-doped fiber laser by tunable bandpass filter." Laser Physics 35, no. 2 (2025): 025102. https://doi.org/10.1088/1555-6611/ada752.

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Abstract This paper demonstrates and characterizes a tunable wavelength ultrafast erbium-doped fiber laser (EDFL), enabled by a tunable bandpass filter (TBF) and mode-locked with a graphene thin film as the saturable absorber. The laser’s wavelength can be continuously tuned from 1507.5 nm to 1571.3 nm, covering a broad range of 63.8 nm. Fourteen distinct wavelengths, spaced at 5 nm intervals, are recorded. The variation in bandwidth and pulse width across these wavelengths reveals values ranging from 0.5 nm to 0.8 nm and from 3.9 ps to 6.6 ps, respectively, all at a fixed repetition rate of 1

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4

Pardeshi, Sagar R., Eknath B. Kole, Harshad S. Kapare, et al. "Progress on Thin Film Freezing Technology for Dry Powder Inhalation Formulations." Pharmaceutics 14, no. 12 (2022): 2632. http://dx.doi.org/10.3390/pharmaceutics14122632.

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The surface drying process is an important technology in the pharmaceutical, biomedical, and food industries. The final stage of formulation development (i.e., the drying process) faces several challenges, and overall mastering depends on the end step. The advent of new emerging technologies paved the way for commercialization. Thin film freezing (TFF) is a new emerging freeze-drying technique available for various treatment modalities in drug delivery. TFF has now been used for the commercialization of pharmaceuticals, food, and biopharmaceutical products. The present review highlights the fu

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Sahakijpijarn, Sawittree, Chaeho Moon, John J. Koleng, Dale J. Christensen, and Robert O. Williams. "Development of Remdesivir as a Dry Powder for Inhalation by Thin Film Freezing." Pharmaceutics 12, no. 11 (2020): 1002. http://dx.doi.org/10.3390/pharmaceutics12111002.

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Remdesivir exhibits in vitro activity against SARS-CoV-2 and was granted approval for emergency use. To maximize delivery to the lungs, we formulated remdesivir as a dry powder for inhalation using thin film freezing (TFF). TFF produces brittle matrix nanostructured aggregates that are sheared into respirable low-density microparticles upon aerosolization from a passive dry powder inhaler. In vitro aerodynamic testing demonstrated that drug loading and excipient type affected the aerosol performance of remdesivir. Remdesivir combined with optimal excipients exhibited desirable aerosol performa

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6

Zeeshan, Attaullah, N. Ameer Ahammad, Nehad Ali Shah, and Jae Dong Chung. "A Numerical Framework for Entropy Generation Using Second-Order Nanofluid Thin Film Flow over an Expanding Sheet: Error Estimation and Stability Analysis." Mathematics 11, no. 5 (2023): 1078. http://dx.doi.org/10.3390/math11051078.

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Thin film flow (TFF) problems received a lot of attention in recent times. Some frequent applications of TFF include polymer and metal extraction, elastic sheet drawing, food striating, heat exchanges, and device fluidization. Further improvement and enhancement of TFF need to be examined due to its practical applications. In the current analysis, viscoelastic nanofluid thin film flow through the vertical expanding sheet in the presence of a magnetic field with entropy function has been examined. The governing equations are transformed to first-order ODEs through similarity transformation and

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7

Liu, Ya, Ke Sun, Jinyi Ma, Zhong Yu, and Zhongwen Lan. "Design and Fabrication of Temperature-Compensated Film Bulk Acoustic Resonator Filter Based on the Stress Compensation Effect." Coatings 12, no. 8 (2022): 1126. http://dx.doi.org/10.3390/coatings12081126.

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To ensure that the performance of filters matches the continuous development in communication frequency bands, the influence of temperature on filter performance must be considered during the fabrication of filters. In this study, a cavity-type temperature-compensated film bulk acoustic resonator (TC-FBAR) device was prepared with an SiO2 temperature filter between the bottom electrode and the piezoelectric layer. A one-dimensional Mason model of the TC-FBAR was established. An advanced design system, a high-frequency structure simulator, and COMSOL software were used to optimize the design of

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Bakhtin, Danila, Stepan Bazhenov, Victoria Polevaya, et al. "Aging of Thin-Film Composite Membranes Based on Crosslinked PTMSP/PEI Loaded with Highly Porous Carbon Nanoparticles of Infrared Pyrolyzed Polyacrylonitrile." Membranes 10, no. 12 (2020): 419. http://dx.doi.org/10.3390/membranes10120419.

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The mitigation of the physical aging of thin-film composite (TFC) poly[1-trimethylsilyl-1-propyne] (PTMSP) membranes was studied via the simultaneous application of a polymer-selective layer crosslinking and mixed-matrix membrane approach. For the first time, a recently developed highly porous activated carbon material (infrared (IR) pyrolyzed poly[acrylonitrile] (PAN) or IR-PAN-a) was investigated as an additive to a PTMSP-selective layer for the reduction of aging in TFC membranes. The total electric energy spent on the IR irradiation treatment of IR-PAN-a particles was twice lower than conv

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9

Wu, Guodong, Haishun Du, Doohee Lee, et al. "Wearable Conductive Polymer Matrix Composites for Breath Monitoring with Ammonia Detection." ECS Meeting Abstracts MA2022-02, no. 62 (2022): 2284. http://dx.doi.org/10.1149/ma2022-02622284mtgabs.

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Conductive polymers, such as polyaniline (PANI), Polythiophene (PTh), polypyrrole (PPy), etc., are widely used for gas sensors due to their excellent electrical conductivity and low cost to manufacture [1]. In particular, PANI has attracted more attention due to its ease of synthesis, high environmental stability, and high reactivity with ammonia gas. In addition, the selection of acid-base dopant during the preparation process of polyaniline can adjust carrier concentrations for the change in electrical conduction or resistance to improve sensing properties. There have been many reports on th

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10

Ylilammi, M., J. Ella, M. Partanen, and J. Kaitila. "Thin film bulk acoustic wave filter." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 49, no. 4 (2002): 535–39. http://dx.doi.org/10.1109/58.996574.

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11

Carvalho Girotto, Aline, Antonia Patricia Oliveira Barros, Joatan Lucas De Sousa Gomes Costa, Lucas David Galvani, Andréa Abi Rached Dantas, and Milton Carlos Kuga. "Internal adaptation of different bulk-fill composite resin restorations applied on a thin layer of resin-modified glass-ionomer cement in endodontically treated teeth." Journal of Research in Dentistry 12, no. 2 (2025): 31–38. https://doi.org/10.59306/jrd.v12e2202431-38.

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Aims: The aim of this study was to assess and compare the internal adaptation of several bulk-fill resins applied on a thin layer of glass cement in endodontically treated teeth. Materials and Methods: Thirty-two intact premolars were endodontically treated. On the gutta-percha a thin layer of resin-modified glass-ionomer cement (RMGIC) Ionoseal. The teeth were randomly divided into 4 groups (n=8): Control group (CG) - Adper Scotchbond Multi-Purpose/Filtek Z350XT ; (FBF) - Single Bond Universal/Filtek Bulk Fill; (SF) - OptiBond All-In-One/SonicFill, (TBF) - Tetric N-Bond Universal/Tetric N-Cer

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12

CHEN, HAIYAN. "EFFECT OF TRANSMISSION FUNCTION OF CASCADED MULTILAYER MEDIUM THIN FILM FILTER ON Er–Yb CO-DOPED WAVEGUIDE AMPLIFIERS." International Journal of Modern Physics B 25, no. 17 (2011): 2371–77. http://dx.doi.org/10.1142/s0217979211101144.

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Modeling and amplification of erbium–ytterbium co-doped phosphate glass waveguide amplifier with a cascaded multilayer medium thin film filter is investigated theoretically. This proposed filter consists of some different filtering unit cells with different central wavelength and bandwidth, and each cell can suppress certain peak gain at a specific wavelength. The intrinsical gain spectrum of amplifier is obtained by solving a set of rate and power propagation equations, the effect of transmittance spectrum of thin film filter on flattening gain is discussed, and the transmission function of c

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13

Furusawa, Gaku, and Tetsuo Kan. "Au Nanospirals Transferred onto PDMS Film Exhibiting Circular Dichroism at Visible Wavelengths." Micromachines 11, no. 7 (2020): 641. http://dx.doi.org/10.3390/mi11070641.

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We propose a thin, single-layered circular dichroic filter with Au nanospiral structures on a polydimethylsiloxane (PDMS) thin film that has strong circular dichroism at visible wavelengths. Au nanospiral structures with a diameter of 70 nm were fabricated by cryogenic glancing angle deposition on a substrate with a nanodot array template patterned with the block copolymer PS-PDMS. The Au nanospiral structures were transferred onto a transparent and flexible PDMS thin film to fabricate a thin, single-layered circular dichroic filter. The filter had a very large circular dichroism peak of −830

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14

Xing, Ying, Yao Shuai, Xiaoxue Wang, et al. "Fabrication of single crystalline LiNbO3 thin films for wideband bulk acoustic wave filters." Materials Express 10, no. 9 (2020): 1504–10. http://dx.doi.org/10.1166/mex.2020.1783.

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Single crystalline lithium niobate (LN) thin films with a Y43-cut are fabricated by crystal-ion-slicing technique, and the B-staged benzocyclobutene (BCB) polymer is used as the bonding medium for the transferring of the LN thin film on to a homogeneous LN substrate. The thickness of the LN film is about 910 nm, and low energy ion irradiation is used to treat the surface of the film, which reduces the roughness from 12.4 nm down to 3.6 nm. Bulk acoustic wave (BAW) resonator is fabricated based on the thin LN layer, and the electromechanical coefficient (k2t) of the LN film reaches 16.3%. A 3-s

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15

Abdolvand, Reza, and Farrokh Ayazi. "High-frequency monolithic thin-film piezoelectric-on-substrate filters." International Journal of Microwave and Wireless Technologies 1, no. 1 (2009): 29–35. http://dx.doi.org/10.1017/s175907870900004x.

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A class of micromachined acoustic filters is presented in which the number of individual resonant structures is reduced to 1 (monolithic filter). This resonant structure is comprised of a stack of thin-film piezoelectric-on-silicon. Symmetric and anti-symmetric resonance modes (dual modes) of the silicon structure are piezoelectrically excited and coupled to realize a 2-pole narrowband filter. High-order lateral bulk acoustic resonance modes of a rectangular plate are utilized to design dispersed-frequency UHF filters fabricated on a single substrate. Thickness mode filters are also realized a

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16

Masibi, Elizabeth Gaobodiwe, Thollwana Andretta Makhetha, and Richard Motlhaletsi Moutloali. "Effect of the Incorporation of ZIF-8@GO into the Thin-Film Membrane on Salt Rejection and BSA Fouling." Membranes 12, no. 4 (2022): 436. http://dx.doi.org/10.3390/membranes12040436.

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A series of Zeolitic imidazole framework-8 (ZIF-8) clusters supported on graphene oxide (ZIF-8@GO) nanocomposites were prepared by varying the ratios of ZIF-8 to GO. The resultant nanocomposites were characterized using various techniques, such as Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), thermogravimetric analysis (TGA), Fourier Transform Infrared (FTIR) and Raman spectroscopy. These nanocomposites were incorporated into the thin film layer during interfacial polymerisation process of m-phenylenediamine (

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17

Yoon Lee, Dong. "The variation of propagation velocity according to substrate material of band pass filter." International Journal of Engineering & Technology 7, no. 3.3 (2018): 393. http://dx.doi.org/10.14419/ijet.v7i2.33.14193.

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Background/Objectives: The SAW filter has a frequency characteristic determined by the geometry of the IDT electrode, and is widely used as a band-pass filter for passing only a signal having a specific frequency.Methods/Statistical analysis: The features of this filter are high stability and reliability and enable mass production using semiconductor processes.Findings: The MCB process lift off method was used to fabricate the filter to solve the difficulties of the SAW filter process. In particular, we fabricated ZnO thin films with excellent c-axis preferential orientation, high resistivity

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18

Sun, Xue-zheng, Pei-fu Gu, Hai-xing Chen, Bo Jin, Hai-feng Li, and Xu Liu. "Superprism Effect in Thin Film Fabry-Perot Filter." PIERS Online 1, no. 5 (2005): 561–65. http://dx.doi.org/10.2529/piers041209002809.

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19

Ying Zhang, Ying Zhang, Hongji Qi Hongji Qi, Kui Yi Kui Yi, Yanzhi Wang Yanzhi Wang, Hongbo He Hongbo He, and Jianda Shao Jianda Shao. "Design and fabrication of thin-film spatial filter." Chinese Optics Letters 12, s2 (2014): S20501–320504. http://dx.doi.org/10.3788/col201412.s20501.

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20

Zhang, Ying, Hong-Ji Qi, Kui Yi, Yan-Zhi Wang, Zhan Sui, and Jian-Da Shao. "An improved transmitting multi-layer thin-film filter." Chinese Physics B 24, no. 5 (2015): 054212. http://dx.doi.org/10.1088/1674-1056/24/5/054212.

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21

Yu, Kan, Jia-qi Bao, and Juan-juan Yin. "Tunable thin-film filter with low angle sensitivity." Optoelectronics Letters 11, no. 5 (2015): 338–41. http://dx.doi.org/10.1007/s11801-015-5126-7.

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22

Song, Chi, Xin Zhang, Mingyang Li, Zhenhao Liu, Henan Hu, and Zizheng Li. "A Method of Improving the Structural Color Quality of HfO2 Grating Based on Thin Film Filter." Coatings 12, no. 11 (2022): 1657. http://dx.doi.org/10.3390/coatings12111657.

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In order to eliminate the influence of the high-order magnetic dipole modes in the short-wave range of the high-refractive-index dielectric grating, we propose a thin film filter to cut off the “useless” short-wave. In this way, the high-order magnetic dipole can be suppressed, and the quality of the structure color is highly improved after the thin film filter cut off the incident light in the non-resonant band. The combined application of the thin film filter and the grating filter not only avoids the problem of too big film layer thickness, but also reduces the manufacturing process cost. F

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23

Bo, Du, Lin Jian, Ou Li, Shi Yu, and MA Jin-yi. "Full Wave Simulation and Design of Film Bulk Acoustic Wave Filters." MATEC Web of Conferences 160 (2018): 01005. http://dx.doi.org/10.1051/matecconf/201816001005.

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In order to simulate the frequency response of thin film bulk acoustic wave filter accurately, the MBVD model of film bulk acoustic wave filter chip and three dimension electro-magnetic model of package were respectively established. And then, the collaborative simulation of acoustic and electro-magnetic components was realized in ADS software. Finally, thin film bulk acoustic wave filter with working frequency of 2.825GHz and 5.6 GHz were designed and fabricated by this method. Insertion loss of 2.825GHz FBAR filter is less than 1.5dB, and rejection is more than 40dB. Insertion loss of 5.6GHz

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24

Fu, Xiuhua, Suotao Dong, Shifu Xiong, Cheng Li, and Xiaodong Chen. "Development of Wide-Angle Short-Wave Pass Thin Film Based on the Ultra-Thin Silicate Glass." Materials 15, no. 13 (2022): 4706. http://dx.doi.org/10.3390/ma15134706.

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With the rapid development of laser medicine, there are higher requirements placed on the performance of optical components in various medical systems. This paper is aimed at exploring the critical optical devices of medical equipment for treating periodontitis and gingivitis. The cathode sputtering method was used to produce the wide-angle short-wave pass filter, and a hundreds grid fastness test was conducted to detect the occurrence of film peeling. Considering the results of SEM, transmission spectrum, and stress test of the sample, an analysis was conducted as to the cause of poor bonding

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25

Athamneh, Abedalgany, and Shadi A. Alboon. "Analysis of Liquid Crystal Tunable Thin-Film Optical Filters Using Signal Flow Graph Technique." International Journal of Optics 2021 (July 13, 2021): 1–4. http://dx.doi.org/10.1155/2021/5513995.

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In this paper, a liquid crystal tunable thin-film optical bandpass filter is studied and analyzed using the signal flow graph technique. This paper investigates an exact form for calculating the transmission coefficients, reflection coefficients, and the transmission intensity of the filter. The simulation results show the filter performance and the channel shape profile. In addition, the results show the tuning capability of the filter. The signal flow graph technique provides an attractive method for analyzing the thin-film optical filters since it overcomes the difficulty of the refractive

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26

Pa, Pai Shan. "Product Design of a Precision Recycle-Process Tool for Displays' Color Filters of TFT-LCDs." Advanced Materials Research 44-46 (June 2008): 449–54. http://dx.doi.org/10.4028/www.scientific.net/amr.44-46.449.

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An effective process was developed using electroremoval as a precision removal-process for indium tin oxide (ITO) thin-film nanostructures from the displays’ color filter surface of thin film transistor liquid crystal displays (TFT-LCDs). The low yield of ITO thin-film deposition is an important factor in semiconductor production. By establishing a recycling process using the ultra-precise removal of thin-film nanostructures, the semiconductor optoelectronic industry can effectively recycle defective products, minimizing both production costs and pollution. For the removal-process, high rotati

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27

Lam, Zihim, Harald Anlauf, and Hermann Nirschl. "Roller discharge of thin film filter cakes from membranes: A key to the thin film filtration." Separation and Purification Technology 221 (August 2019): 38–43. http://dx.doi.org/10.1016/j.seppur.2019.03.062.

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28

Ozoliņš, O., V. Bobrovs, and G. Ivanovs. "DWDM Transmission Based on the Thin-Film Filter Technology." Latvian Journal of Physics and Technical Sciences 48, no. 3 (2011): 55–65. http://dx.doi.org/10.2478/v10047-011-0021-x.

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DWDM Transmission Based on the Thin-Film Filter Technology A dense wavelength division multiplexing (DWDM) transmission scheme with two thin-film filters (FWHM bandwidth 100 GHz and 200 GHz) has been realized to evaluate the minimum channel interval needed for a satisfactory bit error ratio. For this purpose, detailed research was conducted into the impact of the filters on the optical signal's de-multiplexing in a DWDM system, in which the measurements of eye diagrams and the optical power spectral densities of a received signal were made. From the results of measurements the minimum channel

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29

Zhang Ying, 章瑛, 易葵 Yi Kui, 齐红基 Qi Hongji, and 邵建达 Shao Jianda. "Design of Phase-Shifted Rugate Thin Film Spatial Filter." Chinese Journal of Lasers 41, no. 10 (2014): 1007001. http://dx.doi.org/10.3788/cjl201441.1007001.

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30

TAKEHARA, Hironari, Kiyotaka SASAGAWA, and Jun OHTA. "Thin-Film RGB Filter for Radiation-Resistant Color Camera." Journal of The Surface Finishing Society of Japan 75, no. 3 (2024): 136–39. http://dx.doi.org/10.4139/sfj.75.136.

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31

Sharma, Deepanshu, Neeraj Khare, and Mahesh P. Abegaonkar. "Magnetically tunable bandpass filter using cobalt ferrite thin film." Solid State Communications 230 (March 2016): 40–42. http://dx.doi.org/10.1016/j.ssc.2016.01.014.

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32

YOO, C. S., J. M. MAENG, S. S. SONG, K. S. SEO, and W. S. LEE. "A Compact Ultrawide Bandpass Filter on Thin-Film Substrate." IEICE Transactions on Electronics E90-C, no. 12 (2007): 2232–36. http://dx.doi.org/10.1093/ietele/e90-c.12.2232.

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33

Yu, Kan, Yuanyuan Liu, Jiaqi Bao, and Dexiu Huang. "Design of angle-tuned wedge narrowband thin film filter." Optics & Laser Technology 56 (March 2014): 71–75. http://dx.doi.org/10.1016/j.optlastec.2013.07.006.

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34

Hodgkinson, Ian J., Qi hong Wu, Akhlesh Lakhtakia, and Martin W. McCall. "Spectral-hole filter fabricated using sculptured thin-film technology." Optics Communications 177, no. 1-6 (2000): 79–84. http://dx.doi.org/10.1016/s0030-4018(00)00603-9.

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Iordanov, V. P., G. W. Lubking, R. Ishihara, R. F. Wolffenbuttel, P. M. Sarro, and M. J. Vellekoop. "Silicon thin-film UV filter for NADH fluorescence analysis." Sensors and Actuators A: Physical 97-98 (April 2002): 161–66. http://dx.doi.org/10.1016/s0924-4247(01)00848-2.

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Chen, Haiyan, Jizhi Dai, and Yongzhi Liu. "Thin Film Filter for Broadband IR Integrated Waveguide Amplifiers." International Journal of Infrared and Millimeter Waves 26, no. 2 (2005): 297–305. http://dx.doi.org/10.1007/s10762-005-3007-z.

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37

Zhang, Jinlong, Yujiang Xie, Xinbin Cheng, Hongfei Jiao, and Zhanshan Wang. "Thin-film thickness-modulated designs for optical minus filter." Applied Optics 52, no. 23 (2013): 5788. http://dx.doi.org/10.1364/ao.52.005788.

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Sargent, Robert B., and Nada A. O'Brien. "Dielectric Materials for Thin-Film-Based Optical Communications Filters." MRS Bulletin 28, no. 5 (2003): 372–76. http://dx.doi.org/10.1557/mrs2003.103.

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AbstractExplosive growth in the fiber-optic telecommunications infrastructure during the past decade has driven noteworthy advances in thin-film-based optical interference filter technology. In particular, the widespread deployment of wavelength-division multiplexing (WDM), a means of increasing the communication capacity of an optical fiber by utilizing more than one wavelength of light, has motivated significant improvements in bandpass filter performance. A common requirement is for filters that combine or separate wavelengths spaced 100 GHz (0.8 nm) apart. The foundation for these recent b

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39

Hou, Hai-Gang, Shahid Hussain, Hai-Cheng Shao, et al. "Experimental Insights on Factors Influencing Sensitivity of Thin Film Narrow Band-Pass Filters." Journal of Nanoelectronics and Optoelectronics 14, no. 11 (2019): 1548–54. http://dx.doi.org/10.1166/jno.2019.2663.

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First time study for development of relationship between design and fabrication of thin film narrow-pass filters simulated using the Essential Macleod optical coating design program and verified through experimental data. In thin film narrow band-pass filter's design, can design better filter by changing some parameters, but the theoretical designs are often difficult to achieve. The sensitivity of thin film narrow band-pass filters are mainly influenced by the refractive index of cavity layers, number of mirror layers, interference order and number of cavities. Based on analysis of all these

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40

Wei, Ching Liang, Ying Chung Chen, Chien Chuan Cheng, Kuo Sheng Kao, Chung Jen Chung, and Wei Tsai Chang. "The Optimization of SMR-Based Filter by Thermal Annealing Treatment." Materials Science Forum 654-656 (June 2010): 1792–95. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.1792.

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In this study, an SMR-based filter was fabricated by dc/rf magnetron sputtering and photolithography, and a thermal annealing treatment was adopted to improve the frequency response. The SMR-based filter is composed of a ZnO piezoelectric thin film onto SiO2/W Bragg reflector. ZnO thin films were prepared by two-step sputtering with various deposition temperatures to obtain good piezoelectric properties. ZnO layers deposited at the temperature of 200 °C exhibit a highly c-axis preferred orientation, good crystalline characteristics and low surface roughness. The filter is thermal treated by a

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41

Gedamu, Dawit, Ingo Paulowicz, Seid Jebril, Yogendra Kumar Mishra, and Rainer Adelung. "Procedures and Properties for a Direct Nano-Micro Integration of Metal and Semiconductor Nanowires on Si Chips." Journal of Nanotechnology 2012 (2012): 1–13. http://dx.doi.org/10.1155/2012/325732.

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1-dimensional metal and semiconductor nanostructures exhibit interesting physical properties, but their integration into modern electronic devices is often a very challenging task. Finding the appropriate supports for nanostructures and nanoscale contacts are highly desired aspects in this regard. In present work we demonstrate the fabrication of 1D nano- and mesostructures between microstructured contacts formed directly on a silicon chip either by a thin film fracture (TFF) approach or by a modified vapor-liquid-solid (MVLS) approach. In principle, both approaches offer the possibilities to

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Liu, Jieyu, Wenjuan Liu, Zhiwei Wen, Min Zeng, Yao Cai, and Chengliang Sun. "Laterally Excited Bulk Acoustic Wave Resonators with Rotated Electrodes Using X-Cut LiNbO3 Thin-Film Substrates." Sensors 25, no. 6 (2025): 1740. https://doi.org/10.3390/s25061740.

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With the development of piezoelectric-on-insulator (POI) substrates, X-cut LiNbO3 thin-film resonators with interdigital transducers are widely investigated due to their adjustable resonant frequency (fs) and effective electromechanical coupling coefficient (Keff2). This paper presents an in-depth study of simulations and measurements of laterally excited bulk acoustic wave resonators based on an X-cut LiNbO3/SiO2/Si substrate and a LiNbO3 thin film to analyze the effects of electrode angle rotation (θ) on the modes, fs, and Keff2. The rotated θ leads to different electric field directions, ca

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Wang, Luyao, Tianyu Yang, Haolei Feng, Shengya Zhang, Jianguo Liu, and Zeping Zhao. "Tunable Optical Filter Based on Thin Film Lithium Niobate Photonic Crystals." Photonics 11, no. 12 (2024): 1134. https://doi.org/10.3390/photonics11121134.

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In this paper, we propose a tunable optical filter with a high Q factor based on photonic crystal technology, achieving a Q factor of 442.85 using thin film lithium niobate technology. By proportionally adjusting the dimensions of the unit structure, this filter enables coarse tuning across the 1520–1570 nm range (C band). Furthermore, by utilizing the thermo-optic effect of lithium niobate, we can achieve fine-tuning of the optical filter within a temperature range of 300 K to 600 K, allowing for a center wavelength tuning capability of up to 3.7 nm. This design not only enhances the filter’s

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Wang, Chong. "Thin-Film Non-Polarizing Filters' Simulation Analysis Used in Tilted Incidence." Applied Mechanics and Materials 368-370 (August 2013): 822–25. http://dx.doi.org/10.4028/www.scientific.net/amm.368-370.822.

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Central wavelength and pass band width characters of S-polarization and P-polarization will separate when the filter is tilted. This paper gives us multi-layer films structure from one design method which adopts three refractive index materials. Simulation calculations of three concrete filter designs for single cavity and three cavities prove that the method is feasible.

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Rane, Sunit, and Vijaya Puri. "Thick film dielectric overlay effects on thin and thick film microstrip bandpass filter." Microelectronics Journal 32, no. 8 (2001): 649–54. http://dx.doi.org/10.1016/s0026-2692(01)00042-8.

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Tien, Chuen-Lin, Shu-Hui Su, Ching-Ying Cheng, Yuan-Ming Chang, and Dong-Han Mo. "Optical Interference Filters Combined with Thin Film Residual Stress Compensation for Image Contrast Enhancement." Coatings 13, no. 5 (2023): 857. http://dx.doi.org/10.3390/coatings13050857.

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We propose two single-wavelength notch filters and one dual-wavelength (480 and 620 nm) notch filter to enhance image contrast. The stack structure of the notch filters was designed as (Ta2O5/SiO2)4Ta2O5 in Essential Macleod thin film simulation software. Dual-electron-beam evaporation with ion beam-assisted deposition was used to prepare optical interference filters with different center wavelengths. A multilayer notch filter with a center wavelength of 620 nm was deposited on the front surface of the glass, and then a notch filter with a center wavelength of 480 nm was coated on the rear sur

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Herrmann, William C., and Dale E. Morton. "Thin-film optical coating filter stability under different environmental conditions." Applied Optics 32, no. 28 (1993): 5673. http://dx.doi.org/10.1364/ao.32.005673.

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NAGASE, Ryo. "Fiber-Optic Sensing Technique Using a Thin-Film Bandpass Filter." Review of Laser Engineering 45, no. 1 (2017): 22. http://dx.doi.org/10.2184/lsj.45.1_22.

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Zou, Yang, Laixia Nian, Yao Cai, et al. "Dual-mode thin film bulk acoustic wave resonator and filter." Journal of Applied Physics 128, no. 19 (2020): 194503. http://dx.doi.org/10.1063/5.0028702.

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Tan, C. Y., and C. K. Ong. "Planar tunable HTS microwave filter with patterned ferroelectric thin film." Superconductor Science and Technology 19, no. 2 (2006): 212–16. http://dx.doi.org/10.1088/0953-2048/19/2/010.

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