Plasmonics最新文献

{"title":"Photocatalysis Application for Palladium Nanoparticles Synthesized by Laser Ablation in Liquid","authors":"Aliyaa A. Urabe,&nbsp;Uday M. Nayef,&nbsp;Randa Kamel","doi":"10.1007/s11468-023-02019-0","DOIUrl":"10.1007/s11468-023-02019-0","url":null,"abstract":"<div><p>In this study, a simple method for creating palladium nanoparticles (Pd NPs) using laser ablation in a liquid medium at a wavelength of 1064 nm at different laser energies, 360, 660, and 800 mJ by 200 pulses, was investigated. The aim was to determine the differences in the structural and physical characteristics of the samples and examine the resulting changes. The presence of palladium nanoparticles was demonstrated through X-ray diffraction, and the crystal sizes were found to be 49.9, 41.5, and 16.8 nm for laser energies of 360, 660, and 800 mJ, respectively. Morphology was investigated by analyzing TEM, and the average particle sizes, as indicated by the histogram, were 100, 83.6, and 45.3 nm. Optical characteristics were assessed using UV-Vis and photoluminescence. There was an increase in the energy gap values of 2.53, 2.62, and 2.65 eV with increasing laser energy of 330, 600, and 800 mJ, respectively. The photocatalytic activity of Pd NPs in the color reduction of methylene blue (MB) was evaluated using a UV-Vis spectrophotometer to assess the utilization of samples in photocatalysts and the strength of the impact of the nano-solution on the dye. These results showed that Pd NPs exhibit significant catalytic activity in the reduction of methylene blue, especially at an energy of 800 mJ, the percentage of dye analysis reached 85% within 50 min.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"19 2","pages":"611 - 619"},"PeriodicalIF":3.3,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41886260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metamaterial-Based Sensors Loaded Corona-Shaped Resonator for COVID-19 Detection by Using Microwave Techniques","authors":"Yadgar I. Abdulkarim,&nbsp;Halgurd N. Awl,&nbsp;Fahmi F. Muhammadsharif,&nbsp;Salah Raza Saeed,&nbsp;Karzan R. Sidiq,&nbsp;Siyamand S. Khasraw,&nbsp;Jian Dong,&nbsp;Binay Kumar Pandey,&nbsp;Digvijay Pandey","doi":"10.1007/s11468-023-02007-4","DOIUrl":"10.1007/s11468-023-02007-4","url":null,"abstract":"<div><p>The paper proposes microwave-based metamaterial-based sensors for coronavirus infection detection. A sensor has been developed to calculate the electromagnetic wave’s coefficients of transmission (S21) and reflection (S11) at resonance frequency. The computer simulation technology (CST) tools have been used to create the system and evaluate its consequences. The sensor uses electromagnetic interaction with a blood sample from a person who has COVID-19. This is done by watching for an alteration in the resonant frequency, which serves as a sign of COVID-19. Infectious people’s blood samples indicated a 740-MHz shift in frequency compared to normal people’s blood samples. This is a fascinating method to find COVID-19. A lot of research has been done on parametric analyses. In this work, various applications like CST, HFSS, and ADS are used to support the findings, and these applications align well with each other. Lastly, it is also looked into how the fields were spread out for the indicated arrangement.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"19 2","pages":"595 - 610"},"PeriodicalIF":3.3,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43553231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fano Resonance Based on Coupling Between Nanoring Resonator and MIM Waveguide for Refractive Index Sensor","authors":"Zain Elabdeen A. Mohamed,&nbsp;Sofyan A. Taya,&nbsp;Abdulkarem H. M. Almawgani,&nbsp;Ayman Taher Hindi","doi":"10.1007/s11468-023-02009-2","DOIUrl":"10.1007/s11468-023-02009-2","url":null,"abstract":"<div><p>Fano resonance is a sharp and asymmetric spectral feature that can be used for refractive index sensing. In this paper, we propose a Fano resonance sensor based on the coupling between a nanoring resonator and a metal-insulator-metal (MIM) waveguide. The nanoring resonator is fabricated in the middle of the MIM waveguide, and the two structures are coupled with high-field confinement. The transmission spectrum of the coupled structure shows a Fano resonance, which is sensitive to the refractive index of the surrounding medium. The sensitivity of the sensor is estimated to be 1700 nm/RIU, which is comparable to the sensitivities of other Fano resonance sensors. In addition, the designed sensor achieves the first-ever FOM and <i>Q</i> factor values of 4300.25 RIU⁻¹ and 4310, respectively, for plasmonic MIM sensors. The proposed sensor is simple to fabricate and can be used for a wide range of refractive index sensing applications.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"19 2","pages":"567 - 575"},"PeriodicalIF":3.3,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44313501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-Efficiency Photodetectors Based on Zinc Oxide Nanostructures on Porous Silicon Grown by Pulsed Laser Deposition","authors":"Ali J. Hadi,&nbsp;Uday M. Nayef,&nbsp;Falah A.-H. Mutlak,&nbsp;Majid S. Jabir","doi":"10.1007/s11468-023-02016-3","DOIUrl":"10.1007/s11468-023-02016-3","url":null,"abstract":"<div><p>In this study deposited zinc oxide (ZnO) nanostructures were prepared by pulsed laser deposition (PLD) technique on porous silicon (PS) substrates that were prepared via photoelectrochemical etching of silicon n-type (100). The study investigated the influence of laser energy on various characteristics of the fabricated devices, including their optical, morphological, structural, electrical, and photodetector features. The X-ray diffraction results indicate a dominant broad diffraction peak at 69.14°, and the ZnO phase aligns with the hexagonal wurtzite structure. The field emission scanning electron microscopy micrograph illustrates that porous silicon has a sponge-like fashion, while ZnO nanostructures have spherical grains distributed randomly and grow larger with laser energy. The optical characteristics of the manufactured samples were examined using techniques that include UV–vis absorption spectroscopy, UV–vis diffuse reflectance spectrometry, and photoluminescence spectroscopy. The findings indicated that decreased laser energy led to a blue shift in the energy gap. The reflectivity of the produced samples decreased after the deposition of a zinc oxide layer over porous silicon. The photoluminescence examination showed the presence of four distinct emission peaks, namely, UV, violet-blue, blue, and green, consequent to coating a ZnO layer onto the porous silicon substrate. Fourier transform infrared spectroscopy confirmed that ZnO thin films deposited on porous silicon cause surface oxidation and produced a new peak at 455.2 cm⁻¹ related to the Zn–O stretching band. The current density–voltage properties of the fabricated devices in the absence and presence of white light were investigated as a function of laser energy. The ZnO NPs/PS/n-Si photoreactors displayed rectifier features and had outstanding spectral responsivity from ultraviolet to near-infrared. Moreover, the fabricated photoreactor showed the most prominent external quantum efficiency (EQE) in the UV region. The results of this study are of great importance to the advancement of photodetectors and optoelectronic devices based on ZnO and porous silicon.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"19 2","pages":"577 - 593"},"PeriodicalIF":3.3,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46221478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Optical Properties of Nanoparticle Configurations in Cr/Cr2O3 Composites Synthesized by Pulsed Laser Deposition Method","authors":"Mohammed Albitar,&nbsp;Kamal Kayed,&nbsp;Hayat Alzayed","doi":"10.1007/s11468-023-02023-4","DOIUrl":"10.1007/s11468-023-02023-4","url":null,"abstract":"<div><p>In this article, we succeeded in identifying the absorption peaks that appear in the optical absorption spectra of chromium oxide thin films prepared by the pulsed laser deposition method. It was found that these peaks belong to the nanostructures in the film (chromium particles and chromium oxide nanoparticles). The study included investigating the effect of each of the substrate temperature and laser fluence on the prepared films. We found that heating the substrate to 327 °C leads to a decrease in the concentration chromium nanoparticles. In addition, we found that increasing the laser fluence to 36.7 J cm⁻² leads to a significant increase of both the oxygen content and the chromium nanoparticle concentration in the film.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"19 2","pages":"561 - 565"},"PeriodicalIF":3.3,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46101263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristic Reflection Peak and Its Origin of Nanostructured Material Containing Small Metal Nanoparticles: Two Case Studies","authors":"Jun Wang,&nbsp;Changlong Liu,&nbsp;Jiaojian Yin,&nbsp;Jiana Luo","doi":"10.1007/s11468-023-02018-1","DOIUrl":"10.1007/s11468-023-02018-1","url":null,"abstract":"<div><p>To better understand and utilize the optical reflection behaviors of the nanostructured materials containing small metal nanoparticles (NPs), we once proposed a hypothesis that the recorded characteristic reflection peak should originate from the competition between the localized surface plasmon resonance (LSPR) scattering and absorption of metal NPs. To prove our hypothesis, the Ag- and Au-ion-implanted samples are prepared again by separately introducing 30 keV Ag and Au ions into 0.5-mm-thick SiO₂ wafers to a fluence of 6 × 10¹⁶ ions/cm². Especially, the Au-ion-implanted sample is further annealed in flowing nitrogen at different temperatures. Then, using a transmission electron microscope and a fiber spectrometer, all samples’ cross-sectional observations and spectral measurements are conducted, respectively. Based on the consistency in peak position and the difference in wavelength range of the absorption and reflection light fields measured from the Ag-ion-implanted sample, the LSPR scattering and absorption of Ag NPs are demonstrated to be coexistent, and their competition are testified to be inevitable and achievable via a filtration process. Besides these indirect evidences for our hypothesis, a direct evidence is also found, which is the blueshift shown by the characteristic reflection peak observed from the rear surface of the Au-ion-implanted sample after annealing.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"19 2","pages":"551 - 559"},"PeriodicalIF":3.3,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44512574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigations On Device Structure and Sensing Mechanism Using Gold Nanoparticles Decorated Photonic Crystal Fiber-based Biosensors","authors":"Makram A. Fakhri,&nbsp;Evan T. Salim,&nbsp;Raed Khalid Ibrahim,&nbsp;Hiyam S. Ali,&nbsp;Ahmad S. Azzahrani,&nbsp;Raid A. Ismail,&nbsp;Subash C. B. Gopinath,&nbsp;Ahmed C. Kadhim,&nbsp;Zaid T. Salim","doi":"10.1007/s11468-023-02015-4","DOIUrl":"10.1007/s11468-023-02015-4","url":null,"abstract":"<div><p>A modified photonic crystal fiber (PCF) was utilized as a biosensor, incorporating gold nanoparticles as an active plasmonic material. The finite element method (FEM) was employed to compute numerical interpretations of sensing performance using various liquids: liver blood, colon blood, human plasma, water, and pentanol. In the proposed biosensor configuration, the test sample (analyte) was placed within the core, surrounded by cladding air holes, and external to the hollow core fiber structure. Sensitivity calculations were conducted both before and after the addition of the gold overlayer. The maximum amplitude sensitivity was determined to be 769.57 RIU^-1 for human plasma, accompanied by the optimal electric field of 400V/m. Similarly, in the same liquid, when the deposited photonic crystal fiber (PCF) was coated with a gold layer, the maximum amplitude sensitivity reached 975.53 RIU^-1 at an optimal electric field of 477 V/m. Considering the proposed sensor as a refractive index sensor, it exclusively utilized an analyte sample within the core and air holes of the PCF. Here, the maximum amplitude sensitivity attained was 869.84 RIU^-1, aligning with the best electric field value of 434 V/m.\"</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"19 2","pages":"533 - 550"},"PeriodicalIF":3.3,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49422356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of Split Ring Resonator Graphene Metasurface Sensor for Efficient Detection of Brain Tumor","authors":"Osamah Alsalman,&nbsp;Jacob Wekalao,&nbsp;U. Arun Kumar,&nbsp;Dhruvik Agravat,&nbsp;Juveriya Parmar,&nbsp;Shobhit K. Patel","doi":"10.1007/s11468-023-02002-9","DOIUrl":"10.1007/s11468-023-02002-9","url":null,"abstract":"<div><p>Tumors, irregularities, and malignancies of the brain are deemed lethal. If brain cancer detection techniques are executed appropriately, precious lives might be saved. They should have exceptional mobility, precision, response speed, and high sensitivity. By enabling earlier detection and treatment, a brain tumor sensor has the potential to greatly improve the prognosis for patients with brain tumors. Early detection of brain cancers by the sensor enables early treatment and better patient outcomes. This study demonstrates what is regarded to be a step towards reaching these goals. The proposed is a unique biomedical graphene metasurface sensor (GMS) that can reliably detect and differentiate between various brain tissues. For the proposed study, we have included the abnormal brain tissues of several injuries, tumors, and malignant cells. The proposed GMS reports the highest sensitivity of 153.85 GHz/RIU with a figure of merit of 3.98 and a quality factor of 8.54, where the operating frequency is 0.25 to 0.45 THz. The proposed GMS also indicates the linear functionality for resonance frequency and respective specific brain tissue refractive indices. Overall, these performance indicator parameters indicate good performance, and we can therefore state that the developed GMS structure is highly effective and can be applied for the low-cost, timely, and efficient detection of brain tumors.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"19 1","pages":"523 - 532"},"PeriodicalIF":3.3,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47909668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonlinear Absorption of Cosh-Gaussian Laser Beam in Arrays of Vertically Aligned Carbon Nanotube","authors":"Ashish Varma,&nbsp;S P Mishra,&nbsp;Arvind Kumar,&nbsp;Asheel Kumar","doi":"10.1007/s11468-023-02001-w","DOIUrl":"10.1007/s11468-023-02001-w","url":null,"abstract":"<div><p>The nonlinear absorption of high power cosh-Gaussian laser beam in arrays of vertically aligned carbon nanotube is theoretically investigated. Herein, the cosh-Gaussian (ChG) laser beam propagates perpendicular to the length of carbon nanotube arrays and is mounted on a planer surface. As the high-power laser beam interacts with the carbon nanotube, the electrons associated with it might be excited, undergo the ionized state, and formed the preformed plasma. By the result, the electron cylinder is displaced with respect to ion cylinder. The laser electric field produces the electrostatic restoration force due to the excursion of electrons with respect to ions. This restoration force causes to arise of nonlinearity. An analytical expression of effective nonlinear absorption coefficient of the cosh-Gaussian laser beam is derived. The absorption coefficient is resonantly enhanced as the laser beam frequency approaches near the surface plasmons frequency <span>(omega sim {omega }_{mathrm{pe}}/sqrt{2})</span>. The presence of collisional frequency between electrons and ions leads to strengthen the absorption process. The laser beam decentered parameter associated with hyperbolic cosine term is a sensitive and effective parameter. This parameter much affects the effective absorption coefficient. The graphical results reveal that the absorption coefficient is strongly dependent on laser beam parameters and carbon nanotube array parameters. This enhanced and tunable absorption process of the cosh-Gaussian laser beam might be applicable in electron heating, self-focusing, and high harmonic generation process.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"19 1","pages":"505 - 521"},"PeriodicalIF":3.3,"publicationDate":"2023-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46371045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High Sensitivity of Metasurface-Based Five-Band Terahertz Absorber","authors":"Nursafwanah Ramizah Sabaruddin,&nbsp;Yu Ming Tan,&nbsp;Chung-Ting Chou Chao,&nbsp;Muhammad Raziq Rahimi Kooh,&nbsp;Yuan-Fong Chou Chau","doi":"10.1007/s11468-023-01989-5","DOIUrl":"10.1007/s11468-023-01989-5","url":null,"abstract":"<div><p>In this paper, we present a simple design of a sensing scheme based on a plasmonic metamaterial absorber operating at THz frequencies. The unit cell of the designed structure consists of a gold (Au) cross-bar-patch structure, and a polyimide dielectric spacing layer located on an Au grounded plane. Simulations are carried out using the finite element method and subsequently validated through the calculation using the interference model. We discuss optimized designs that enable the achievement of five resonance modes and high sensitivity. The mechanism of absorptance spectrum is studied, revealing that the coupling effect between the Au cross bars of the metasurface and the sandwiched Au ground surface, separated by a polyimide dielectric spacer, gives rise to the five absorptance modes. The analysis of localized surface plasmon resonance modes are conducted through examination of electric field distributions and surface current density streamlines. Furthermore, the impact of various geometry parameters of the top Au crossbar layer on the resonance frequencies is explored. This work makes a significant contribution to the design of a straightforward plasmonic metamaterial absorber based on a metasurface, which exhibits five distinct absorption bands ranging from 0.4 to 3.2 THz. The calculated refractive index sensitivity and the figure of merit (S (THz/RIU), FOM (RIU⁻¹)) for five resonance frequency modes are (2.00, 1.67), (14.00, 140.00), (14.00, 28.00) (14.00, 11.67), and (12.00, 10.00), respectively. The designed plasmonic device offers valuable insights for future developments in metamaterial absorber-based devices, particularly in the fields of THz nanophotonic applications.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"19 1","pages":"481 - 493"},"PeriodicalIF":3.3,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45239157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}