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de Araújo MM, da Silva JP. The Design of a Glycerol Concentration Sensor Based on an LRSPP Hybrid Photonic Biosensor. SENSORS (BASEL, SWITZERLAND) 2023; 23:2010. [PMID: 36850608 PMCID: PMC9967682 DOI: 10.3390/s23042010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/31/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
A refractive index sensor based on an on-chip silicon nitride (Si3N4) ridge waveguide long-range surface plasmon polariton (LRSPP) is theoretically designed. The waveguide sensor consists of a gold film to enable the plasmonic resonance on top of a Cytop polymer layer. A proper finite element method was used to design and optimize the geometric parameters at the optical wavelength of 633 nm. In addition, the spectral performance was evaluated using the transfer matrix method from 580 to 680 nm. The redshifted interference spectrum results from an increasing analyte refractive index. The sensitivities of 6313 dB/cm/RIU and 251.82 nm/RIU can be obtained with a 400 nm wide and 25 nm thick Au layer. The proposed sensor has the potential for point-of-care applications considering its compactness and simplicity of construction.
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Affiliation(s)
- Magno M. de Araújo
- Electrotechnical Department, Federal Institute of Education, Science and Technology of Rio Grande do Norte, Mossoro 59628-330, Brazil
| | - José P. da Silva
- Post-Graduated Program in Electrical and Computer Engineering, Technology Center, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil
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2
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Jagan Mohan Rao S, Kim DS, Namgung S, Lee D. Antenna-based reduced IR absorbers for high-performance microbolometers. OPTICS LETTERS 2022; 47:6305-6308. [PMID: 36538424 DOI: 10.1364/ol.474768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/09/2022] [Indexed: 06/17/2023]
Abstract
Absorbers for long-wavelength infrared (LWIR) are designed to have a reduced geometry fitted to a gold cross antenna and numerically studied. Compared to the square membrane geometry widely used in conventional microbolometers, the reduced geometry results in smaller thermal capacities of the vanadium dioxide (VO2) and silicon nitride (Si3N4) layers. However, near-field focusing by the cross antenna leads to a high LWIR absorption. Calculations show that the temperature change per incident energy increases with a decrease in the arm width, and the reduced absorber surpasses the square geometry for all incident angles and polarizations. The antenna-based reduced absorber studied here could serve as an alternative geometry for high-performance microbolometers.
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Khani S, Hayati M. Optical biosensors using plasmonic and photonic crystal band-gap structures for the detection of basal cell cancer. Sci Rep 2022; 12:5246. [PMID: 35347198 PMCID: PMC8960887 DOI: 10.1038/s41598-022-09213-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 03/09/2022] [Indexed: 11/09/2022] Open
Abstract
One of the most interesting topics in bio-optics is measuring the refractive index of tissues. Accordingly, two novel optical biosensor configurations for cancer cell detections have been proposed in this paper. These structures are composed of one-dimensional photonic crystal (PC) lattices coupled to two metal-insulator-metal (MIM) plasmonic waveguides. Also, the tapering method is used to improve the matching between the MIM plasmonic waveguides and PC structure in the second proposed topology. The PC lattices at the central part of the structures generate photonic bandgaps (PBGs) with sharp edges in the transmission spectra of the biosensors. These sharp edges are suitable candidates for sensing applications. On the other hand, the long distance between two PBG edges causes that when the low PBG edge is used for sensing mechanism, it does not have an overlapping with the high PBG edge by changing the refractive index of the analyte. Therefore, the proposed biosensors can be used for a wide wavelength range. The maximum obtained sensitivities and FOM values of the designed biosensors are equal to 718.6, 714.3 nm/RIU, and 156.217, 60.1 RIU-1, respectively. The metal and insulator materials which are used in the designed structures are silver, air, and GaAs, respectively. The finite-difference time-domain (FDTD) method is used for the numerical investigation of the proposed structures. Furthermore, the initial structure of the proposed biosensors is analyzed using the transmission line method to verify the FDTD simulations. The attractive and simple topologies of the proposed biosensors and their high sensitivities make them suitable candidates for biosensing applications.
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Affiliation(s)
- Shiva Khani
- Electrical Engineering Department, Faculty of Engineering, Razi University, Kermanshah, 67149-67346, Iran
| | - Mohsen Hayati
- Electrical Engineering Department, Faculty of Engineering, Razi University, Kermanshah, 67149-67346, Iran.
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Reconfigurable and scalable 2,4-and 6-channel plasmonics demultiplexer utilizing symmetrical rectangular resonators containing silver nano-rod defects with FDTD method. Sci Rep 2021; 11:13628. [PMID: 34211041 PMCID: PMC8249391 DOI: 10.1038/s41598-021-93167-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 06/16/2021] [Indexed: 02/06/2023] Open
Abstract
Reconfigurable and scalable plasmonics demultiplexers have attracted increasing attention due to its potential applications in the nanophotonics. Therefore, here, a novel method to design compact plasmonic wavelength demultiplexers (DEMUXes) is proposed. The designed structures (two, four, and six-channel DEMUXes) consist of symmetrical rectangular resonators (RRs) incorporating metal nano-rod defects (NRDs). In the designed structures, the RRs are laterally coupled to metal-insulator-metal (MIM) waveguides. The wavelengths of the output channels depend on the numbers and radii of the metal NRDs in the RRs. The results obtained from various device geometries, with either a single or multiple output ports, are performed utilizing a single structure, showing real reconfigurability. The finite-difference time-domain (FDTD) method is used for the numerical investigation of the proposed structures. The metal and insulator used for the realization of the proposed DEMUXes are silver and air, respectively. The silver's permittivity is characterized by the well-known Drude model. The basic plasmonic filter which is used to design plasmonic DEMUXes is a single-mode filter. A single-mode filter is easier to cope with in circuits with higher complexity such as DEMUXes. Also, different structural parameters of the basic filter are swept and their effects on the filter's frequency response are presented, to provide a better physical insight. Taking into account the compact sizes of the proposed DEMUXes (considering the six-channel DEMUX), they can be used in integrated optical circuits for optical communication purposes.
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Matyushkin Y, Danilov S, Moskotin M, Belosevich V, Kaurova N, Rybin M, Obraztsova ED, Fedorov G, Gorbenko I, Kachorovskii V, Ganichev S. Helicity-Sensitive Plasmonic Terahertz Interferometer. NANO LETTERS 2020; 20:7296-7303. [PMID: 32903004 DOI: 10.1021/acs.nanolett.0c02692] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Plasmonic interferometry is a rapidly growing area of research with a huge potential for applications in the terahertz frequency range. In this Letter, we explore a plasmonic interferometer based on graphene field effect transistor connected to specially designed antennas. As a key result, we observe helicity- and phase-sensitive conversion of circularly polarized radiation into dc photovoltage caused by the plasmon-interference mechanism: two plasma waves, excited at the source and drain part of the transistor, interfere inside the channel. The helicity-sensitive phase shift between these waves is achieved by using an asymmetric antenna configuration. The dc signal changes sign with inversion of the helicity. A suggested plasmonic interferometer is capable of measuring the phase difference between two arbitrary phase-shifted optical signals. The observed effect opens a wide avenue for phase-sensitive probing of plasma wave excitations in two-dimensional materials.
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Affiliation(s)
- Yakov Matyushkin
- Moscow Institute of Physics and Technology, National Research University, 141700 Dolgoprudny, Russia
- Terahertz Center, University of Regensburg, D-93053 Regensburg, Germany
- Physics Department, Moscow State Pedagogical University, 119435 Moscow, Russia
- National Research University Higher School of Economics, 101000 Moscow, Russia
| | - Sergey Danilov
- Terahertz Center, University of Regensburg, D-93053 Regensburg, Germany
| | - Maxim Moskotin
- Moscow Institute of Physics and Technology, National Research University, 141700 Dolgoprudny, Russia
- Physics Department, Moscow State Pedagogical University, 119435 Moscow, Russia
| | - Vsevolod Belosevich
- Moscow Institute of Physics and Technology, National Research University, 141700 Dolgoprudny, Russia
- Physics Department, Moscow State Pedagogical University, 119435 Moscow, Russia
| | - Natalia Kaurova
- Physics Department, Moscow State Pedagogical University, 119435 Moscow, Russia
| | - Maxim Rybin
- Moscow Institute of Physics and Technology, National Research University, 141700 Dolgoprudny, Russia
- Prokhorov General Physics Institute, RAS, 119991 Moscow, Russia
| | - Elena D Obraztsova
- Moscow Institute of Physics and Technology, National Research University, 141700 Dolgoprudny, Russia
- Prokhorov General Physics Institute, RAS, 119991 Moscow, Russia
| | - Georgy Fedorov
- Moscow Institute of Physics and Technology, National Research University, 141700 Dolgoprudny, Russia
- Physics Department, Moscow State Pedagogical University, 119435 Moscow, Russia
| | - Ilya Gorbenko
- Ioffe Institute, 194021 St. Petersburg, Russia
- ITMO University, 197101 St. Petersburg, Russia
| | - Valentin Kachorovskii
- Ioffe Institute, 194021 St. Petersburg, Russia
- CENTERA Laboratories, Institute of High Pressure Physics, PAS, 01-142 Warsaw, Poland
| | - Sergey Ganichev
- Terahertz Center, University of Regensburg, D-93053 Regensburg, Germany
- CENTERA Laboratories, Institute of High Pressure Physics, PAS, 01-142 Warsaw, Poland
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Ma Y, Li J, Han Z, Maeda H, Ma Y. Bragg-Mirror-Assisted High-Contrast Plasmonic Interferometers: Concept and Potential in Terahertz Sensing. NANOMATERIALS 2020; 10:nano10071385. [PMID: 32708603 PMCID: PMC7407300 DOI: 10.3390/nano10071385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/09/2020] [Accepted: 07/11/2020] [Indexed: 11/16/2022]
Abstract
A Bragg-mirror-assisted terahertz (THz) high-contrast and broadband plasmonic interferometer is proposed and theoretically investigated for potential sensing applications. The central microslit couples the incident THz wave into unidirectional surface plasmon polaritons (SPPs) waves travelling to the bilateral Bragg gratings, where they are totally reflected over a wide wavelength range back towards the microslit. The properties of interference between the SPPs waves and transmitted THz wave are highly dependent on the surrounding material, offering a flexible approach for the realization of refractive index (RI) detection. The systematic study reveals that the proposed interferometric sensor possesses wavelength sensitivity as high as 167 μm RIU-1 (RIU: RI unit). More importantly, based on the intensity interrogation method, an ultrahigh Figure-of-Merit (FoM) of 18,750% RIU-1, surpassing that of previous plasmonic sensors, is obtained due to the high-contrast of interference pattern. The results also demonstrated that the proposed sensors are also quite robust against the oblique illumination. It is foreseen the proposed configuration may open up new horizons in developing THz plasmonic sensing platforms and next-generation integrated THz circuits.
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Affiliation(s)
- Youqiao Ma
- School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China;
- Correspondence:
| | - Jinhua Li
- School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China;
| | - Zhanghua Han
- Shandong Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China;
| | - Hiroshi Maeda
- Department of Information and Communication Engineering, Fukuoka Institute of Technology, Fukuoka 811-0295, Japan;
| | - Yuan Ma
- Department of Electrical and Computer Engineering, Dalhousie University, Halifax, NS B3J 2X4, Canada;
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Arumona AE, Amiri IS, Punthawanunt S, Ray K, Singh G, Bharti GK, Yupapin P. 3D‐quantum interferometer using silicon microring‐embedded gold grating circuit. Microsc Res Tech 2020; 83:1217-1224. [DOI: 10.1002/jemt.23513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 05/01/2020] [Accepted: 05/02/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Arumona Edward Arumona
- Computational Optics Research GroupAdvanced Institute of Materials Science, Ton Duc Thang University District 7, Ho Chi Minh City Vietnam
- Faculty of Applied SciencesTon Duc Thang University District 7, Ho Chi Minh City Vietnam
- Division of Computational PhysicsInstitute for Computational Science, Ton Duc Thang University Ho Chi Minh City Vietnam
| | - Iraj Sandegh Amiri
- Computational Optics Research GroupAdvanced Institute of Materials Science, Ton Duc Thang University District 7, Ho Chi Minh City Vietnam
| | | | - Kanad Ray
- Amity School of Applied SciencesAmity University Rajasthan Jaipur Rajasthan India
| | - Ghanshyam Singh
- Department of ECEMalaviya National Institute of Technology Jaipur (MNIT) Jaipur Rajasthan India
| | - Gaurav Kumar Bharti
- Department of Electronics and Communication EngineeringTechno Engineering College Banipur West Bengal India
| | - Preecha Yupapin
- Computational Optics Research GroupAdvanced Institute of Materials Science, Ton Duc Thang University District 7, Ho Chi Minh City Vietnam
- Faculty of Applied SciencesTon Duc Thang University District 7, Ho Chi Minh City Vietnam
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