المؤلفون: Irawan, Dedi, Ramadhan, Khaikal, Azhar, Azhar

المصدر: Jurnal Penelitian Pendidikan IPA; Vol. 8 No. 5 (2022): November; 2293-2298 ; 2407-795X ; 2460-2582 ; 10.29303/jppipa.v8i5

مصطلحات موضوعية: PCF-SPR biosensor, Skin cancer detection, Numerical Investigation, High-Performance

الوصف: In this work, we carried out a numerical investigation of the PCF-SPR biosensor for the early detection of infected skin cancer cells and healthy cells. The study was conducted using the COMSOL Multiphysics-based FEM method. The dielectric material used in this PCF design is fused silica, while the plasmonic material is gold. The study was conducted to test the effect of the thickness of the plasmonic layer and the size of the air hole diameter on the PCF-SPR. It was found that the larger the diameter of the air hole in the proposed sensor gives a smaller confinement loss value, while the thicker the plasmonic material used also gives a small confinement loss value. The proposed PCF-SPR has a wavelength sensitivity in detecting skin cancer-infected cells of 7000 nm/RIU. These results indicate that the proposed sensor has a good performance in detecting cells infected with skin cancer. ; Pada pekerjaan ini kami melakukan investigasi numerik biosensor PCF-SPR dalam mendeteksi sel terinfeksi sel kanker kulit dan sel sehat. Penelitian dilakukan dengan menggunakan metode FEM berbasis COMSOL Multiphysics. Bahan dielektrik yang digunakan dalam rancangan PCF ini adalah fused silika, sedangkan bahan plasmonicnya adalahnya emas. Penelitian dilakukan uji pengaruh ketebalan lapisan plasmonic dan ukuran diameter hole udara pada PCF-SPR. Ditemukan bahwa semakin besar diameter hole udara pada sensor yang diusulkan memberikan nilai confinement loss yang semakin kecil, sedangkan semakin tebal bahan plasmonic yang digunakan memberikan juga nilai confinement loss yang kecil. PCF-SPR yang diusulkan memiliki sensitifitas panjang gelombang dalam mendeteksi sel terinfeksi kanker kulit sebesar 7000 nm/RIU. Dari hasil ini menunjukkan bahwa sensor yang diusulkan memiliki kinerja yang baik dalam mendeteksi sel terinfeksi kanker kulit.

وصف الملف: application/pdf

العلاقة: http://jppipa.unram.ac.id/index.php/jppipa/article/view/2120/1696Test; http://jppipa.unram.ac.id/index.php/jppipa/article/view/2120Test

الإتاحة: https://doi.org/10.29303/jppipa.v8i5Test
http://jppipa.unram.ac.id/index.php/jppipa/article/view/2120Test

المؤلفون: Azhar, Azhar, Ramadhan, Khaikal, Irawan, Dedi

المصدر: Jurnal Penelitian Pendidikan IPA; Vol. 8 No. 5 (2022): November; 2260-2265 ; 2407-795X ; 2460-2582 ; 10.29303/jppipa.v8i5

مصطلحات موضوعية: PCF-SPR sensor, COMSOL Multiphysics, Alcohol concentration, low-temperature

الوصف: We have observed a numerical simulation of the PCF-SPR sensor detecting alcohol concentration at low temperatures. The investigation was carried out using the finite element method on the PCF-SPR geometric structure. We use a simple geometry structure of the sensor by using fused silica and gold as the sensor’s core and plasmonic material. Observations were made in the alcohol concentration range of 15%, 40%, 60%, and 70%. In the literature, we find the refractive index of each alcohol concentration and input its value into the proposed sensor. The proposed sensor shows that the sensor has a sensitivity in detecting alcohol concentrations at low temperatures of 91 nm/%. In the end, we obtained the optimal sensor components and the sensor can detect the alcohol concentration at low temperatures

وصف الملف: application/pdf

العلاقة: http://jppipa.unram.ac.id/index.php/jppipa/article/view/2143/1681Test; http://jppipa.unram.ac.id/index.php/jppipa/article/view/2143Test

الإتاحة: https://doi.org/10.29303/jppipa.v8i5Test
http://jppipa.unram.ac.id/index.php/jppipa/article/view/2143Test

المؤلفون: Irawan, Dedi, Ramadhan, Khaikal, Saktioto, Saktioto, Fitmawati, Fitmawati, Hanto, Dwi, Widiyatmoko, Bambang

المساهمون: LPPM Universitas Riau and Puspitek Fisika BRIN

المصدر: Indonesian Journal of Electrical Engineering and Computer Science; Vol 28, No 1: October 2022; 146-154 ; 2502-4760 ; 2502-4752 ; 10.11591/ijeecs.v28.i1

مصطلحات موضوعية: Finite element method, HT-PCF-SPR, Photonics crystal fiber, Refractive index, Sensors

الوصف: In this paper, we investigate a hexagonal two-layer photonic crystal fiber based on surface plasmon resonance (HT-PCF-SPR) which is easy to fabricate as a sensor for detecting the refractive index of analytes. After performing numerical simulations using COMSOL multiphysics based on the finite element method (FEM), it was found that the HT-PCF-SPR could detect the analyte's refractive index in the range 1.34-1.37 RIU and in the wavelength range from 730 nm to 810 nm. The plasmonic material used in the design is gold with a thickness of 40 nm which is located outside the layer and in two opposite air holes in the core. The HT-PCF-SPR design has good performance in detecting analytes, it is found that the sensitivity in detecting analytes is 2,000 nm/RIU, meaning that every 1 RIU shift of analyte shifts the wavelength by 2000 nm. Meanwhile, the sensor resolution obtained from the design is 6.67×10-5 RIU, and it is found that the larger the air hole, the greater the confinement loss value.

وصف الملف: application/pdf

العلاقة: https://ijeecs.iaescore.com/index.php/IJEECS/article/view/28999/16695Test; https://ijeecs.iaescore.com/index.php/IJEECS/article/view/28999Test

الإتاحة: https://doi.org/10.11591/ijeecs.v28.i1.pp146-154Test
https://doi.org/10.11591/ijeecs.v28.i1Test
https://ijeecs.iaescore.com/index.php/IJEECS/article/view/28999Test

المؤلفون: Wei Liu, Famei Wang, Chao Liu, Lin Yang, Qiang Liu, Weiquan Su, Jingwei Lv, Sinuo An, Xianli Li, Tao Sun, Paul K. Chu

المصدر: Results in Optics, Vol 1, Iss , Pp 100004- (2020)

مصطلحات موضوعية: PCF-SPR, Bilaterally coated sensor, Near-infrared, Finite element method, Optics. Light, QC350-467

الوصف: A hollow dual-core photonic crystal fiber (PCF) with high sensitivity based on surface plasmon resonance (SPR) sensing is designed and analyzed numerically by the finite element method (FEM). This double-sided gold structure has not been reported before and provides a novel mechanism of SPR excitation. In order to increase coupling effects between the plasmonic mode and the fundamental mode, double-sided gold films deposited on both inner and outer surface are selected. The sensing properties are enhanced remarkably by depositing gold films on the inner and outer surfaces of the thin cladding as manifested by more than 50 times improvement in the average sensitivity compared to the single-sided gold structure. The working wavelength of the sensor is controllable in the near-infrared region (1550–2700 nm) for analyte refractive indices (RIs) ranging from 1.36 to 1.41. Numercal simulation reveals that the average and maximum spectral sensitivities rise to 23,000 nm/RIU and 30,000 nm/RIU and the corresponding resolution is improved to 3.33 × 10−6 RIU. Compared with the unilaterally coated sensor with the same structural parameters, this bilaterally coated sensor offers distinctive advantages that are beneficial to the development of photonic sensors with ultrahigh sensitivity.

وصف الملف: electronic resource

العلاقة: http://www.sciencedirect.com/science/article/pii/S2666950120300043Test; https://doaj.org/toc/2666-9501Test

الوصول الحر: https://doaj.org/article/7173bf16ce584ee69abcec8a7ee4354cTest

المؤلفون: Jianwei Wang, Chao Liu, Famei Wang, Weiquan Su, Lin Yang, Jingwei Lv, Guanglai Fu, Xianli Li, Qiang Liu, Tao Sun, Paul K. Chu

المصدر: Results in Physics, Vol 18, Iss , Pp 103240- (2020)

مصطلحات موضوعية: PCF-SPR, Series-wound structure, Near-infrared, Low refractive index, Physics, QC1-999

الوصف: To achieve sensing of low refractive indexes (RIs) in the near-infrared region, a novel series-wound structure with dual gold nanowires is designed and the photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) is investigated. Numerical simulation by the finite element method (FEM) reveals that the odd mode for y-polarization has better sensing properties due to the more prominent shift of the confinement loss peak. The PCF-SPR sensor can realize a broad range of detection for low RIs changing from 1.13 to 1.35. The maximum spectral sensitivity of 17500 nm/RIU and optimal resolution of 5.71 × 10−6 RIU are observed for RIs between 1.34 and 1.35. Thus, the proposed sensor can be applied in environmental engineering, biochemical analysis and healthcare fields due to its ultrahigh sensitivity for analytes with low RIs in the near-infrared region and fabrication simplicity.

وصف الملف: electronic resource

العلاقة: http://www.sciencedirect.com/science/article/pii/S2211379720317071Test; https://doaj.org/toc/2211-3797Test

الوصول الحر: https://doaj.org/article/286530671c3d45ee8cb1a1ed3c827225Test

المؤلفون: Famei Wang, Chao Liu, Zhijie Sun, Tao Sun, Banghua Liu, Paul K. Chu

المصدر: IEEE Photonics Journal, Vol 10, Iss 4, Pp 1-10 (2018)

مصطلحات موضوعية: PCF-SPR, parallel fiber, near-infrared, lower RI detection., Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467

الوصف: Based on two parallel photonic crystal fibers (PCFs) with D-shape structure, a novel surface plasmon resonance (SPR) sensor with low refractive index (RI) detection at near-infrared wavelengths is described. According to the coupled-mode theory, directional power transfer between the two fiber cores is enhanced by resonant coupling between the surface plasmon modes and fiber core-guided modes. In comparison with corresponding single D-shape PCF, a maximum spectral sensitivity up to 13 500 nm/RIU and resolution of 7.41 × 10-6 RIU for RI detection range between 1.27 and 1.32 are achieved. The proposed two parallel D-shape PCFs-SPR sensor with lower RI detection range offer large potential in the fields of pharmaceutical inspection and pharmaceutical leakage monitoring.

وصف الملف: electronic resource

العلاقة: https://ieeexplore.ieee.org/document/8410982Test/; https://doaj.org/toc/1943-0655Test

الوصول الحر: https://doaj.org/article/6a4a4e20ccdf4ffda8ea4a09cf867495Test

المؤلفون: Dedi Irawan, Khaikal Ramadhan, Saktioto Saktioto, Fitmawati Fitmawati, Dwi Hanto, Bambang Widiyatmoko

مصطلحات موضوعية: Finite element method, Control and Optimization, Computer Networks and Communications, Hardware and Architecture, Sensors, Signal Processing, HT-PCF-SPR, Refractive index, Electrical and Electronic Engineering, Photonics crystal fiber, Information Systems

الوصف: In this paper, we investigate a hexagonal two-layer photonic crystal fiber based on surface plasmon resonance (HT-PCF-SPR) which is easy to fabricate as a sensor for detecting the refractive index of analytes. After performing numerical simulations using COMSOL multiphysics based on the finite element method (FEM), it was found that the HT-PCF-SPR could detect the analyte's refractive index in the range 1.34-1.37 RIU and in the wavelength range from 730 nm to 810 nm. The plasmonic material used in the design is gold with a thickness of 40 nm which is located outside the layer and in two opposite air holes in the core. The HT-PCF-SPR design has good performance in detecting analytes, it is found that the sensitivity in detecting analytes is 2,000 nm/RIU, meaning that every 1 RIU shift of analyte shifts the wavelength by 2000 nm. Meanwhile, the sensor resolution obtained from the design is 6.67×10-5 RIU, and it is found that the larger the air hole, the greater the confinement loss value.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da137b22a4ca8989d5d4119caf08abb8Test
https://zenodo.org/record/7309475Test

المؤلفون: Chao Liu, Zhijie Sun, Tao Sun, Famei Wang, Banghua Liu, Paul K. Chu

المصدر: IEEE Photonics Journal, Vol 10, Iss 4, Pp 1-10 (2018)

مصطلحات موضوعية: lcsh:Applied optics. Photonics, Materials science, 02 engineering and technology, near-infrared, 01 natural sciences, 010309 optics, 0103 physical sciences, lcsh:QC350-467, Maximum power transfer theorem, PCF-SPR, Electrical and Electronic Engineering, Surface plasmon resonance, Leakage (electronics), parallel fiber, business.industry, Surface plasmon, lcsh:TA1501-1820, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, lower RI detection, Wavelength, Spectral sensitivity, Optoelectronics, 0210 nano-technology, business, Refractive index, lcsh:Optics. Light, Photonic-crystal fiber

الوصف: Based on two parallel photonic crystal fibers (PCFs) with D-shape structure, a novel surface plasmon resonance (SPR) sensor with low refractive index (RI) detection at near-infrared wavelengths is described. According to the coupled-mode theory, directional power transfer between the two fiber cores is enhanced by resonant coupling between the surface plasmon modes and fiber core-guided modes. In comparison with corresponding single D-shape PCF, a maximum spectral sensitivity up to 13 500 nm/RIU and resolution of 7.41 × 10-6 RIU for RI detection range between 1.27 and 1.32 are achieved. The proposed two parallel D-shape PCFs-SPR sensor with lower RI detection range offer large potential in the fields of pharmaceutical inspection and pharmaceutical leakage monitoring.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbed44a33dc5424980a016398523654bTest
https://doi.org/10.1109/jphot.2018.2856273Test

المؤلفون: Qiang Liu, Xianli Li, Guanglai Fu, Paul K. Chu, Jianwei Wang, Chao Liu, Tao Sun, Famei Wang, Lin Yang, Jingwei Lv, Weiquan Su

المصدر: Results in Physics, Vol 18, Iss, Pp 103240-(2020)

مصطلحات موضوعية: 010302 applied physics, Coupling, Fabrication, Materials science, business.industry, Near-infrared spectroscopy, Series-wound structure, Nanowire, General Physics and Astronomy, 02 engineering and technology, 021001 nanoscience & nanotechnology, Low refractive index, 01 natural sciences, lcsh:QC1-999, Spectral sensitivity, Near-infrared, 0103 physical sciences, Optoelectronics, Sensitivity (control systems), Surface plasmon resonance, PCF-SPR, 0210 nano-technology, business, lcsh:Physics, Photonic-crystal fiber

الوصف: To achieve sensing of low refractive indexes (RIs) in the near-infrared region, a novel series-wound structure with dual gold nanowires is designed and the photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) is investigated. Numerical simulation by the finite element method (FEM) reveals that the odd mode for y-polarization has better sensing properties due to the more prominent shift of the confinement loss peak. The PCF-SPR sensor can realize a broad range of detection for low RIs changing from 1.13 to 1.35. The maximum spectral sensitivity of 17500 nm/RIU and optimal resolution of 5.71 × 10−6 RIU are observed for RIs between 1.34 and 1.35. Thus, the proposed sensor can be applied in environmental engineering, biochemical analysis and healthcare fields due to its ultrahigh sensitivity for analytes with low RIs in the near-infrared region and fabrication simplicity.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f932a8f76b6cf8f89e9fe773ace8066dTest
http://www.sciencedirect.com/science/article/pii/S2211379720317071Test

المؤلفون: Wang, F., Sun, Z., Liu, C., Sun, T., Chu, P. K.

المصدر: Opto - Electronics Review.

مصطلحات موضوعية: PCF-SPR biosensor, DANCE, sensitivity, resolution

الوصف: A highly sensitive photonic crystal fiber based on the surface plasmon resonance (PCF-SPR) biosensor for the detection of the density alteration in non-physiological cells (DANCE) is described. Human acute leukemia cells are determined by the discontinuous sucrose gradient centrifugation (DSGC) in which the cells are separated into several bands. The separated cells with different intracellular densities and refractive indexes (RI) ranging from 1.3342 to 1.3344 are distinguished in situ by means of the differential transmission spectrum. The biosensor shows a maximum amplitude sensitivity of 2000 nm/RIU and resolution as high as 5 × 10⁻⁵ RIU. According to the wavelength interrogation method, a maximum spectral sensitivity of 9000 nm/RIU in the sensing range between 1.33 and 1.53 is achieved, corresponding to a resolution as high as 1.11 × 10⁻⁵ 5RIU for the biosensor. The proposed PCF-SPR biosensor has promising application in biological and biochemical detection.

الوصول الحر: http://yadda.icm.edu.pl/baztech/element/bwmeta1.element.baztech-8fafa961-908e-4412-9006-ffaab96ce44fTest