Bibliographies thématiques / PLASMONIC NANOGRATINGS / Articles de revues

Articles de revues sur le sujet « PLASMONIC NANOGRATINGS »

Pour voir les autres types de publications sur ce sujet consultez le lien suivant : PLASMONIC NANOGRATINGS.
Auteur : Grafiati
Publié le 11 septembre 2023

Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres

Choisissez une source :

Consultez les 50 meilleurs articles de revues pour votre recherche sur le sujet « PLASMONIC NANOGRATINGS ».

À côté de chaque source dans la liste de références il y a un bouton « Ajouter à la bibliographie ». Cliquez sur ce bouton, et nous générerons automatiquement la référence bibliographique pour la source choisie selon votre style de citation préféré : APA, MLA, Harvard, Vancouver, Chicago, etc.

Vous pouvez aussi télécharger le texte intégral de la publication scolaire au format pdf et consulter son résumé en ligne lorsque ces informations sont inclues dans les métadonnées.

Parcourez les articles de revues sur diverses disciplines et organisez correctement votre bibliographie.

1

Das, Narottam, Ayman Karar, Chee Leong Tan, Mikhail Vasiliev, Kamal Alameh et Yong Tak Lee. « Metal-semiconductor-metal (MSM) photodetectors with plasmonic nanogratings* ». Pure and Applied Chemistry 83, no 11 (7 juillet 2011) : 2107–13. http://dx.doi.org/10.1351/pac-con-11-01-13.

Texte intégral
Résumé :
We discuss the light absorption enhancement factor dependence on the design of nanogratings inscribed into metal-semiconductor-metal photodetector (MSM-PD) structures. These devices are optimized geometrically, leading to light absorption improvement through plasmon-assisted effects. Finite-difference time-domain (FDTD) simulation results show ~50 times light absorption enhancement for 850 nm light due to improved optical signal propagation through the nanogratings. Also, we show that the light absorption enhancement is strongly dependent on the nanograting shapes in MSM-PDs.
Styles APA, Harvard, Vancouver, ISO, etc.
2

Zhao, Bo, Zhenfen Huang, Jianjun Yang, Lei Zhang, Rajagopal S. Joshya et Chunlei Guo. « A High-Efficiency Multispectral Filter Based on Plasmonic Hybridization between Two Cascaded Ultrathin Nanogratings ». Molecules 24, no 11 (28 mai 2019) : 2038. http://dx.doi.org/10.3390/molecules24112038.

Texte intégral
Résumé :
Overcoming the disadvantages of low transmission and broad peak bandwidth of previously reported plasmonic color filters, a high-efficiency multispectral plasmonic color filter is theoretically proposed with two cascaded ultrathin metallic nanogratings separated by two heterogeneous dielectric layers, and its optical properties are theoretically investigated using the finite-difference time-domain method. The transmission spectrum presents three near-unity peak bands accompanied with three near-null dip bands adjacent around them. Both transmission efficiencies of above 90% and ultranarrow peak bandwidth of 20 nm are achieved in the visible regime. The peak band positions can be flexibly tailored by varying the structural parameters. The filter selects the visible color with high signal noise ratio at the peak bands. The outstanding spectral properties of this filter indicate significant improvement for the high-accuracy color filtering and multispectral imaging applications. The simulated near-field electromagnetic distributions suggest that the excitation of the hybrid antisymmetric surface plasmon polariton (SPP) leaky mode and metal-insulator-metal waveguide modes are responsible for the peak transmission bands, while the formation of the hybrid SPP bound modes confined on the bottom nanograting makes the dip transmission bands, all of which are the consequence of the plasmonic hybridization between the two neighboring metallic nanogratings.
Styles APA, Harvard, Vancouver, ISO, etc.
3

Firoozi, Arezoo, et Ahmad Mohammadi. « Design of plasmonic backcontact nanogratings for broadband and polarization-insensitive absorption enhancement in thin-film solar cell ». International Journal of Modern Physics B 29, no 17 (23 juin 2015) : 1550111. http://dx.doi.org/10.1142/s0217979215501118.

Texte intégral
Résumé :
We discuss the rules for designing nanostructured plasmonic backcontact of thin-film crystalline silicon solar cells using two-dimensional finite-difference time-domain (2D-FDTD) method. A novel efficient quasi-periodic plasmonic nanograting is designed. Numerical calculations demonstrate that broadband and polarization-insensitive absorption enhancement is achieved by the proposed structure which is based on a supercell geometry containing N subcells in each of which there is one Ag nanowire deposited on the backcontact of the solar cell. The proposed structure offers the possibility of controlling the number and location of photonic and plasmonic modes and outperforms the periodic plasmonic nanogratings which only utilize plasmonic resonances. We start by tuning the plasmonic mode of one subcell and then construct the supercell based on the final design of the subcell. Our findings show that with a proper choice of key parameters of the nanograting, several photonic and plasmonic modes can be excited across the entire spectral region where crystalline silicon (c-Si) is absorbing. The absorption enhancement is significant, particularly in the long wavelength region where c-Si is weakly absorbing.
Styles APA, Harvard, Vancouver, ISO, etc.
4

Subramanian, Senthil, Kamal Kumar et Anuj Dhawan. « Palladium-coated narrow groove plasmonic nanogratings for highly sensitive hydrogen sensing ». RSC Advances 10, no 7 (2020) : 4137–47. http://dx.doi.org/10.1039/c9ra08101a.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
5

Bhardwaj, Priyanka, Manidipa Roy et Sanjay Kumar Singh. « Gold Coated VO2 Nanogratings Based Plasmonic Switches ». Trends in Sciences 19, no 1 (1 janvier 2022) : 1721. http://dx.doi.org/10.48048/tis.2022.1721.

Texte intégral
Résumé :
This paper presents 2 dimensional (2D) and 1 dimensional (1D) gold (Au) coated VO2 (Vanadium Dioxide) nanogratings based tunable plasmonic switch. VO2 is a phase changing material and hence exhibits phase transition from semiconductor to metallic phase approximately at 67 ºC or 340 K (critical temperature) which can be achieved by exposure to IR radiation, application of voltage, heating, etc. and there is a huge contrast between optical properties of its metallic and insulating phases and hence that can be utilized to implement VO2 based optical switches. These VO2 based gratings couple the incident optical radiation to plasmonic waveguide modes which in turn leads to high electromagnetic field enhancement in the gaps between the nanogratings. The proposed Au coated VO2 nanogratings can be fabricated by using current state of art fabrication techniques and provides switchability of the order of femtoseconds. Hence the optical switching explained in our paper can be used fast switching applications. For an optimum switch our aim is to maximize its differential reflectance spectra between the 2 states of VO2, i.e., metallic and semiconductor phases. Rigorous Coupled Wave Analysis (RCWA) reveals that wavelengths for maximum differential reflectance can be optimized over a large spectral regime by varying various parameters of nanogratings for example groove height (h), width (w), gap (g) between the gratings, and thickness (t) of Au coating over VO2 by simulation using RCWA for maximum differential reflectance between VO2 metal and semiconductor phase, i.e., the switching wavelengths can be tuned by varying grating parameters and thus we can have optimum optical switch.
Styles APA, Harvard, Vancouver, ISO, etc.
6

Li, Shulei, Mingcheng Panmai, Shaolong Tie, Yi Xu, Jin Xiang et Sheng Lan. « Regulating disordered plasmonic nanoparticles into polarization sensitive metasurfaces ». Nanophotonics 10, no 5 (15 février 2021) : 1553–63. http://dx.doi.org/10.1515/nanoph-2020-0651.

Texte intégral
Résumé :
Abstract Metasurfaces composed of regularly arranged and deliberately oriented metallic nanoparticles can be employed to manipulate the amplitude, phase and polarization of an incident electromagnetic wave. The metasurfaces operating in the visible to near infrared spectral range rely on the modern fabrication technologies which offer a spatial resolution beyond the optical diffraction limit. Although direct laser writing is an alternative to the fabrication of nanostructures, the achievement of regular nanostructures with deep-subwavelength periods by using this method remains a big challenge. Here, we proposed and demonstrated a novel strategy for regulating disordered plasmonic nanoparticles into nanogratings with deep-subwavelength periods and reshaped nanoparticles by using femtosecond laser pulses. The orientations of the nanogratings depend strongly on the polarization of the femtosecond laser light. Such nanogratings exhibit reflection and polarization control over the reflected light, enabling the realization of polarization sensitive optical memory and color display with high spatial resolution and good chromacity.
Styles APA, Harvard, Vancouver, ISO, etc.
7

Ferrando, Giulio, Matteo Gardella, Matteo Barelli, Debasree Chowdhury, Pham Duy Long, Nguyen Si Hieu, Maria Caterina Giordano et Francesco Buatier de Mongeot. « Plasmonic and 2D-TMD nanoarrays for large-scale photon harvesting and enhanced molecular photo-bleaching ». EPJ Web of Conferences 266 (2022) : 09003. http://dx.doi.org/10.1051/epjconf/202226609003.

Texte intégral
Résumé :
The urgent environmental and energy challenges require novel solutions for efficient light harvesting and conversion in new-generation ultra-thin devices. Plasmonic nanoantennas and flat optics nanogratings can promote light matter interaction at the nanoscale being very attractive for ultra-thin photonics and sensing applications. In this work we developed two light trapping solutions based on large-scale nanomaterials. The first system is a large-scale (cm2) plasmonic metasurface based on self-organized gold nanostripes. The second is based on the periodic re-shaping of ultra-thin semiconducting MoS2 layers forming large-area flat-optics nanogratings. Under this condition Rayleigh Anomalies can be resonantly excited thus promoting in-plane light confinement and photon absorption into the few-layers material. To demonstrate the impact of these nanopatterned systems in photon harvesting we probed their efficiency into a prototypal photochemical reaction: the photo-bleaching of Methylene Blue (MB). We demonstrate the resonant enhancement of the photo-bleaching of these polluting dye molecules promoted either by the localized plasmon resonance in Au nanostripes or by the Rayleigh Anomaly in flat-optics MoS2 nanogratings. We investigate this effect through a quantitative analysis of the solution photodissociation induced by a monochromatic light. These results show the strong potential of flat-optics templates for light-harvesting and energy conversion in ultra-thin photonic devices.
Styles APA, Harvard, Vancouver, ISO, etc.
8

Das, Narottam, Farzaneh Fadakar Masouleh et Hamid Reza Mashayekhi. « A Comprehensive Analysis of Plasmonics-Based GaAs MSM-Photodetector for High Bandwidth-Product Responsivity ». Advances in OptoElectronics 2013 (24 septembre 2013) : 1–10. http://dx.doi.org/10.1155/2013/793253.

Texte intégral
Résumé :
A detailed numerical study of subwavelength nanogratings behavior to enhance the light absorption characteristics in plasmonic-based metal-semiconductor-metal photodetectors (MSM-PDs) is performed by implementation of 2D finite-difference time-domain (FDTD) algorithm. Due to the structure design and changes in the device physical parameters, various devices with different geometries are simulated and compared. Parameters like nano-grating height and duty cycle (DC) are optimized for rectangular and taper subwavelength metal nanogratings on GaAs substrate and their impact on light absorption below the diffraction limits are confirmed. The calculated light enhancement is ~32.7-times for an optimized device in comparison with a conventional MSM-PD. This enhancement is attributed to the plasmonic effects in the near-field region.
Styles APA, Harvard, Vancouver, ISO, etc.
9

Palinski, Timothy J., Brian E. Vyhnalek, Gary W. Hunter, Amogha Tadimety et John X. J. Zhang. « Mode Switching With Waveguide-Coupled Plasmonic Nanogratings ». IEEE Journal of Selected Topics in Quantum Electronics 27, no 1 (janvier 2021) : 1–10. http://dx.doi.org/10.1109/jstqe.2020.3019023.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
10

Kudryashov, Sergey, Alexey Rupasov, Mikhail Kosobokov, Andrey Akhmatkhanov, George Krasin, Pavel Danilov, Boris Lisjikh et al. « Hierarchical Multi-Scale Coupled Periodical Photonic and Plasmonic Nanopatterns Inscribed by Femtosecond Laser Pulses in Lithium Niobate ». Nanomaterials 12, no 23 (4 décembre 2022) : 4303. http://dx.doi.org/10.3390/nano12234303.

Texte intégral
Résumé :
The ultrafast interaction of tightly focused femtosecond laser pulses with bulk dielectric media in direct laser writing (inscription) regimes is known to proceed via complex multi-scale light, plasma and material modification nanopatterns, which are challenging for exploration owing to their mesoscopic, transient and buried character. In this study, we report on the first experimental demonstration, analysis and modeling of hierarchical multi-period coupled longitudinal and transverse nanogratings in bulk lithium niobate inscribed in the focal region by 1030 nm, 300 fs laser pulses in the recently proposed sub-filamentary laser inscription regime. The longitudinal Bragg-like topography nanogratings, possessing the laser-intensity-dependent periods ≈ 400 nm, consist of transverse birefringent nanogratings, which are perpendicular to the laser polarization and exhibit much smaller periods ≈ 160 nm. Our analysis and modeling support the photonic origin of the longitudinal nanogratings, appearing as prompt electromagnetic and corresponding ionization standing waves in the pre-focal region due to interference of the incident and plasma-reflected laser pulse parts. The transverse nanogratings could be assigned to the nanoscale material modification by interfacial plasmons, excited and interfered in the resulting longitudinal array of the plasma sheets in the bulk dielectric material. Our experimental findings provide strong support for our previously proposed mechanism of such hierarchical laser nanopatterning in bulk dielectrics, giving important insights into its crucial parameters and opening the way for directional harnessing of this technology.
Styles APA, Harvard, Vancouver, ISO, etc.
11

Hong, Koh Yiin, Jacson W. Menezes et Alexandre G. Brolo. « Template-Stripping Fabricated Plasmonic Nanogratings for Chemical Sensing ». Plasmonics 13, no 1 (13 janvier 2017) : 231–37. http://dx.doi.org/10.1007/s11468-017-0503-7.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
12

Liu, Zhihua, Ying Li, Qian Xu, Hongqing Wang et Wei-Tao Liu. « Coherent Vibrational Spectroscopy of Electrochemical Interfaces with Plasmonic Nanogratings ». Journal of Physical Chemistry Letters 11, no 1 (14 novembre 2019) : 243–48. http://dx.doi.org/10.1021/acs.jpclett.9b02985.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
13

Chang, Yu-Chung, Bo-Han Huang et Tsung-Hsien Lin. « Surface-Enhanced Raman Scattering and Fluorescence on Gold Nanogratings ». Nanomaterials 10, no 4 (17 avril 2020) : 776. http://dx.doi.org/10.3390/nano10040776.

Texte intégral
Résumé :
Surface-enhanced Raman scattering (SERS) spectroscopy is a sensitive sensing technique. It is desirable to have an easy method to produce SERS-active substrate with reproducible and robust signals. We propose a simple method to fabricate SERS-active substrates with high structural homogeneity and signal reproducibility using electron beam (E-beam) lithography without the problematic photoresist (PR) lift-off process. The substrate was fabricated by using E-beam to define nanograting patterns on the photoresist and subsequently coat a layer of gold thin film on top of it. Efficient and stable SERS signals were observed on the substrates. In order to investigate the enhancement mechanism, we compared the signals from this substrate with those with photoresist lifted-off, which are essentially discontinuous gold stripes. While both structures showed significant grating-period-dependent fluorescence enhancement, no SERS signal was observed on the photoresist lifted-off gratings. Only transverse magnetic (TM)-polarized excitation exhibited strong enhancement, which revealed its plasmonic attribution. The fluorescence enhancement showed distinct periodic dependence for the two structures, which is due to the different enhancement mechanism. We demonstrate using this substrate for specific protein binding detection. Similar periodicity dependence was observed. Detailed theoretical and experimental studies were performed to investigate the observed phenomena. We conclude that the excitation of surface plasmon polaritons on the continuous gold thin film is essential for the stable and efficient SERS effects.
Styles APA, Harvard, Vancouver, ISO, etc.
14

Zhou Zhen, 周朕, et 史林兴 Shi Linxing. « Optimized Design of Plasmonic Thin Film Solar Cells with Metal Nanogratings ». Laser & ; Optoelectronics Progress 49, no 11 (2012) : 112303. http://dx.doi.org/10.3788/lop49.112303.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
15

Wu, Shangliang, Yan Ye, Huigao Duan, Yu Gu et Linsen Chen. « Large‐Area, Optical Variable‐Color Metasurfaces Based on Pixelated Plasmonic Nanogratings ». Advanced Optical Materials 7, no 7 (24 janvier 2019) : 1801302. http://dx.doi.org/10.1002/adom.201801302.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
16

Chen, Ji, Xi Chen, Tao Li et Shining Zhu. « On-Chip Detection of Orbital Angular Momentum Beam by Plasmonic Nanogratings ». Laser & ; Photonics Reviews 12, no 8 (3 juillet 2018) : 1700331. http://dx.doi.org/10.1002/lpor.201700331.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
17

Zeng, Beibei, Yongkang Gao et Filbert J. Bartoli. « Rapid and highly sensitive detection using Fano resonances in ultrathin plasmonic nanogratings ». Applied Physics Letters 105, no 16 (20 octobre 2014) : 161106. http://dx.doi.org/10.1063/1.4899132.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
18

Maleki, Morteza, Mahdiyeh Mehran et Arash Mokhtari. « Design of a near-infrared plasmonic gas sensor based on graphene nanogratings ». Journal of the Optical Society of America B 37, no 11 (27 octobre 2020) : 3478. http://dx.doi.org/10.1364/josab.401589.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
19

Dong, Weiling, Yimei Qiu, Joel Yang, Robert E. Simpson et Tun Cao. « Wideband Absorbers in the Visible with Ultrathin Plasmonic-Phase Change Material Nanogratings ». Journal of Physical Chemistry C 120, no 23 (8 juin 2016) : 12713–22. http://dx.doi.org/10.1021/acs.jpcc.6b01080.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
20

Savita et Harsimranjit Kaur. « Impact of silver nanogratings for enhanced light absorption in plasmonic based photodetector ». Optik 199 (décembre 2019) : 163367. http://dx.doi.org/10.1016/j.ijleo.2019.163367.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
21

Liang, Zhaokang, Yao Wen, Zhi Zhang, Zihao Liang, Zefeng Xu et Yu-Sheng Lin. « Plasmonic metamaterial using metal-insulator-metal nanogratings for high-sensitive refraction index sensor ». Results in Physics 15 (décembre 2019) : 102602. http://dx.doi.org/10.1016/j.rinp.2019.102602.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
22

Mohapatra, Saswat, Udit Pant et Rakesh S. Moirangthem. « Thermal nanoimprint lithography based plasmonic nanogratings for refractive index sensing of polar solvents ». Materials Today : Proceedings 28 (2020) : 215–17. http://dx.doi.org/10.1016/j.matpr.2020.01.581.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
23

Kwon, Soyeong, Seong-Yeon Lee, Soo Ho Choi, Jang-Won Kang, Taejin Lee, Jungeun Song, Sang Wook Lee et al. « Polarization-Dependent Light Emission and Charge Creation in MoS2 Monolayers on Plasmonic Au Nanogratings ». ACS Applied Materials & ; Interfaces 12, no 39 (7 septembre 2020) : 44088–93. http://dx.doi.org/10.1021/acsami.0c13436.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
24

Sedghi, Mehdi, Rahmatollah Rahimi et Mahboubeh Rabbani. « Design of a Plasmonic Photocatalyst Structure Consisting of Metallic Nanogratings for Light-Trapping Enhancement ». Plasmonics 14, no 2 (11 août 2018) : 347–52. http://dx.doi.org/10.1007/s11468-018-0810-7.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
25

Ogawa, Shinpei, et Masafumi Kimata. « Direct fabrication and characterization of high-aspect-ratio plasmonic nanogratings using tapered-sidewall molds ». Optical Materials Express 7, no 2 (31 janvier 2017) : 633. http://dx.doi.org/10.1364/ome.7.000633.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
26

Gollmer, Dominik A., Christopher Lorch, Frank Schreiber, Dieter P. Kern et Monika Fleischer. « Shaping and polarizing fluorescence emission of a polycrystalline organic semiconductor film by plasmonic nanogratings ». Journal of the Optical Society of America B 36, no 7 (25 mars 2019) : E9. http://dx.doi.org/10.1364/josab.36.0000e9.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
27

Mukhopadhyay, S., L. Rodriguez-Suné, C. Cojocaru, M. A. Vincenti, K. Hallman, G. Leo, M. Belchovski, D. de Ceglia, M. Scalora et J. Trull. « Three orders of magnitude enhancement of second and third harmonic generation in the visible and ultraviolet ranges from plasmonic gold nanogratings ». APL Photonics 8, no 4 (1 avril 2023) : 046108. http://dx.doi.org/10.1063/5.0134541.

Texte intégral
Résumé :
We report experimental observations and numerical simulations of second and third harmonic generation from a gold nanograting, which exhibits a plasmonic resonance in the near infrared. The resonance is tunable, with a spectral position that depends on the angle of incidence. All things being equal, the enhancement of nonlinear optical processes produced by the field localization in the nanograting when compared with a flat gold mirror manifests itself dramatically from the ultraviolet to the visible range: second harmonic generation conversion efficiencies increase by more than three orders of magnitude, while we report a third harmonic generation conversion efficiency enhancement factor of 3200, both in excellent agreement with our theoretical predictions. The clear inferences one may draw from our results are that our model describes the dynamics with unprecedented accuracy and that much remains to be revealed in the development of nonlinear optics of metals at the nanoscale.
Styles APA, Harvard, Vancouver, ISO, etc.
28

Kumawat, Uttam K., Kamal Kumar, Priyanka Bhardwaj et Anuj Dhawan. « Indium‐rich InGaN/GaN solar cells with improved performance due to plasmonic and dielectric nanogratings ». Energy Science & ; Engineering 7, no 6 (14 septembre 2019) : 2469–82. http://dx.doi.org/10.1002/ese3.436.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
29

Lopez-Muñoz, Gerardo A., Maria Alejandra Ortega, Ainhoa Ferret-Miñana, Francesco De Chiara et Javier Ramón-Azcón. « Direct and Label-Free Monitoring of Albumin in 2D Fatty Liver Disease Model Using Plasmonic Nanogratings ». Nanomaterials 10, no 12 (15 décembre 2020) : 2520. http://dx.doi.org/10.3390/nano10122520.

Texte intégral
Résumé :
Non-alcoholic fatty liver (NAFLD) is a metabolic disorder related to a chronic lipid accumulation within the hepatocytes. This disease is the most common liver disorder worldwide, and it is estimated that it is present in up to 25% of the world’s population. However, the real prevalence of this disease and the associated disorders is unknown mainly because reliable and applicable diagnostic tools are lacking. It is known that the level of albumin, a pleiotropic protein synthesized by hepatocytes, is correlated with the correct function of the liver. The development of a complementary tool that allows direct, sensitive, and label-free monitoring of albumin secretion in hepatocyte cell culture can provide insight into NAFLD’s mechanism and drug action. With this aim, we have developed a simple integrated plasmonic biosensor based on gold nanogratings from periodic nanostructures present in commercial Blu-ray optical discs. This sensor allows the direct and label-free monitoring of albumin in a 2D fatty liver disease model under flow conditions using a highly-specific polyclonal antibody. This technology avoids both the amplification and blocking steps showing a limit of detection within pM range (≈0.26 ng/mL). Thanks to this technology, we identified the optimal fetal bovine serum (FBS) concentration to maximize the cells’ lipid accumulation. Moreover, we discovered that the hepatocytes increased the amount of albumin secreted on the third day from the lipids challenge. These data demonstrate the ability of hepatocytes to respond to the lipid stimulation releasing more albumin. Further investigation is needed to unveil the biological significance of that cell behavior.
Styles APA, Harvard, Vancouver, ISO, etc.
30

Kuppe, Christian, Xuezhi Zheng, Calum Williams, Alexander W. A. Murphy, Joel T. Collins, Sergey N. Gordeev, Guy A. E. Vandenbosch et Ventsislav K. Valev. « Measuring optical activity in the far-field from a racemic nanomaterial : diffraction spectroscopy from plasmonic nanogratings ». Nanoscale Horizons 4, no 5 (2019) : 1056–62. http://dx.doi.org/10.1039/c9nh00067d.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
31

Khezripour, Zahra, Fatemeh Fouladi Mahani et Arash Mokhtari. « Performance improvement of thin-film silicon solar cells using transversal and longitudinal titanium nitride plasmonic nanogratings ». Optical Materials 99 (janvier 2020) : 109532. http://dx.doi.org/10.1016/j.optmat.2019.109532.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
32

Daneshmandi, Omidreza, Rahman Sharaf et Rahim Ghayour. « A new high performance MSM hybrid plasmonic photodetector based on nanogratings and dual mode horn shape waveguide ». Nanotechnology 29, no 40 (30 juillet 2018) : 405202. http://dx.doi.org/10.1088/1361-6528/aad2f7.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
33

Heydari, Mehdi, et Mohammad Sabaeian. « Plasmonic nanogratings on MIM and SOI thin-film solar cells : comparison and optimization of optical and electric enhancements ». Applied Optics 56, no 7 (24 février 2017) : 1917. http://dx.doi.org/10.1364/ao.56.001917.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
34

Tan, Chee Leong, Ayman Karar, Kamal Alameh et Yong Tak Lee. « Optical absorption enhancement of hybrid-plasmonic-based metal-semiconductor-metal photodetector incorporating metal nanogratings and embedded metal nanoparticles ». Optics Express 21, no 2 (16 janvier 2013) : 1713. http://dx.doi.org/10.1364/oe.21.001713.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
35

Wi, Jung-Sub, Seungjo Lee, Sung Ho Lee, Dong Kyo Oh, Kyu-Tae Lee, Inkyu Park, Moon Kyu Kwak et Jong G. Ok. « Facile three-dimensional nanoarchitecturing of double-bent gold strips on roll-to-roll nanoimprinted transparent nanogratings for flexible and scalable plasmonic sensors ». Nanoscale 9, no 4 (2017) : 1398–402. http://dx.doi.org/10.1039/c6nr08387k.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
36

He, Jinna, Chunzhen Fan, Junqiao Wang, Yongguang Cheng, Pei Ding et Erjun Liang. « Plasmonic Nanostructure for Enhanced Light Absorption in Ultrathin Silicon Solar Cells ». Advances in OptoElectronics 2012 (5 novembre 2012) : 1–8. http://dx.doi.org/10.1155/2012/592754.

Texte intégral
Résumé :
The performances of thin film solar cells are considerably limited by the low light absorption. Plasmonic nanostructures have been introduced in the thin film solar cells as a possible solution around this issue in recent years. Here, we propose a solar cell design, in which an ultrathin Si film covered by a periodic array of Ag strips is placed on a metallic nanograting substrate. The simulation results demonstrate that the designed structure gives rise to 170% light absorption enhancement over the full solar spectrum with respect to the bared Si thin film. The excited multiple resonant modes, including optical waveguide modes within the Si layer, localized surface plasmon resonance (LSPR) of Ag stripes, and surface plasmon polaritons (SPP) arising from the bottom grating, and the coupling effect between LSPR and SPP modes through an optimization of the array periods are considered to contribute to the significant absorption enhancement. This plasmonic solar cell design paves a promising way to increase light absorption for thin film solar cell applications.
Styles APA, Harvard, Vancouver, ISO, etc.
37

Liu, Chang, Fanling Meng, Baogang Wang, Lei Zhang et Xiaoqiang Cui. « Plasmonic nanograting enhanced fluorescence for protein microarray analysis of carcinoembryonic antigen (CEA) ». Analytical Methods 10, no 1 (2018) : 145–50. http://dx.doi.org/10.1039/c7ay02232h.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
38

Zhu, Chun Li, et Jing Li. « Three-Dimensional Finite-Difference Time-Domain Method Modeling of Nanowire Optical Probe ». Applied Mechanics and Materials 602-605 (août 2014) : 3359–62. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.3359.

Texte intégral
Résumé :
In this paper, output near fields of nanowires with different optical and structure configurations are calculated by using the three-dimensional finite-difference time-domain (3D FDTD) method. Then a nanowire with suitable near field distribution is chosen as the probe for scanning dielectric and metal nanogratings. Scanning results show that the resolution in near-field imaging of dielectric nanogratings can be as low as 80nm, and the imaging results are greatly influenced by the polarization direction of the incident light. Compared with dielectric nanogratings, metal nanogratings have significantly enhanced resolutions when the arrangement of gratings is perpendicular to the polarization direction of the incident light due to the enhancement effect of the localized surface plasmons (SPs). Results presented here could offer valuable references for practical applications in near-field imaging with nanowires as optical probes.
Styles APA, Harvard, Vancouver, ISO, etc.
39

Sohrabi, Foozieh, et Seyedeh Mehri Hamidi. « Adjustable Plasmonic Bandgap in One-Dimensional Nanograting Based on Localized and Propagating Surface Plasmons ». International Journal of Optics and Photonics 13, no 2 (1 décembre 2019) : 97–102. http://dx.doi.org/10.29252/ijop.13.2.97.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
40

Pellacani, Paola, Lucia Fornasari, Chloé Rodriguez, Vicente Torres-Costa, Franco Marabelli et Miguel Manso Silvàn. « Porous Silicon Bragg Reflector and 2D Gold-Polymer Nanograting : A Route Towards a Hybrid Optoplasmonic Platform ». Nanomaterials 9, no 7 (16 juillet 2019) : 1017. http://dx.doi.org/10.3390/nano9071017.

Texte intégral
Résumé :
Photonic and plasmonic systems have been intensively studied as an effective means to modify and enhance the electromagnetic field. In recent years hybrid plasmonic–photonic systems have been investigated as a promising solution for enhancing light-matter interaction. In the present work we present a hybrid structure obtained by growing a plasmonic 2D nanograting on top of a porous silicon distributed Bragg reflector. Particular attention has been devoted to the morphological characterization of these systems. Electron microscopy images allowed us to determine the geometrical parameters of the structure. The matching of the optical response of both components has been studied. Results indicate an interaction between the plasmonic and the photonic parts of the system, which results in a localization of the electric field profile.
Styles APA, Harvard, Vancouver, ISO, etc.
41

Maisonneuve, M., O. d’Allivy Kelly, A.-P. Blanchard-Dionne, S. Patskovsky et M. Meunier. « Phase sensitive sensor on plasmonic nanograting structures ». Optics Express 19, no 27 (9 décembre 2011) : 26318. http://dx.doi.org/10.1364/oe.19.026318.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
42

Feng, Ke, Zhaoyi Chen, Zhibin Chen, Jinxing Shen et Huanliang Li. « Composite Structure of Ag Colloidal Particles and Au Sinusoidal Nanograting with Large-Scale Ultra-High Field Enhancement for SERS Detection ». Photonics 8, no 10 (28 septembre 2021) : 415. http://dx.doi.org/10.3390/photonics8100415.

Texte intégral
Résumé :
In this study, a novel composite Surface-Enhanced Raman Scattering (SERS) substrate is proposed for ultrasensitive detection. Consisting of gold sinusoidal nanograting and silver colloidal nanoparticles (AgNPs-AuSG), this type of SERS substrate is easy for fabrication by maskless laser interference lithography, and capable of providing large-scale ultra-high field enhancement, attributed to localized surface plasmons (LSPs) and surface plasmon polaritons (SPPs). The enhancement factor (EF) of this composite substrate is as high as up to 10 orders of magnitude in the simulation experiment. Experimental results show that this large-area, productive SERS substrate of AgNPs-AuSG has realized sensitive TNT and RDX detection with the limit of detection (LOD) of 10−10 M, which may be a potential candidate for trace explosives detection.
Styles APA, Harvard, Vancouver, ISO, etc.
43

Kim, Inho, Doo Seok Jeong, Taek Seong Lee, Wook Seong Lee et Kyeong-Seok Lee. « Plasmonic nanograting design for inverted polymer solar cells ». Optics Express 20, S5 (24 août 2012) : A729. http://dx.doi.org/10.1364/oe.20.00a729.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
44

Arcadio, Francesco, Luigi Zeni, Aldo Minardo, Caterina Eramo, Stefania Di Ronza, Chiara Perri, Girolamo D’Agostino, Guido Chiaretti, Giovanni Porto et Nunzio Cennamo. « A Nanoplasmonic-Based Biosensing Approach for Wide-Range and Highly Sensitive Detection of Chemicals ». Nanomaterials 11, no 8 (30 juillet 2021) : 1961. http://dx.doi.org/10.3390/nano11081961.

Texte intégral
Résumé :
In a specific biosensing application, a nanoplasmonic sensor chip has been tested by an experimental setup based on an aluminum holder and two plastic optical fibers used to illuminate and collect the transmitted light. The studied plasmonic probe is based on gold nanograting, realized on the top of a Poly(methyl methacrylate) (PMMA) chip. The PMMA substrate could be considered as a transparent substrate and, in such a way, it has been already used in previous work. Alternatively, here it is regarded as a slab waveguide. In particular, we have deposited upon the slab surface, covered with a nanograting, a synthetic receptor specific for bovine serum albumin (BSA), to test the proposed biosensing approach. Exploiting this different experimental configuration, we have determined how the orientation of the nanostripes forming the grating pattern, with respect to the direction of the input light (longitudinal or orthogonal), influences the biosensing performances. For example, the best limit of detection (LOD) in the BSA detection that has been obtained is equal to 23 pM. Specifically, the longitudinal configuration is characterized by two observable plasmonic phenomena, each sensitive to a different BSA concentration range, ranging from pM to µM. This aspect plays a key role in several biochemical sensing applications, where a wide working range is required.
Styles APA, Harvard, Vancouver, ISO, etc.
45

Hua, Yi, Ahmad K. Fumani et Teri W. Odom. « Tunable Lattice Plasmon Resonances in 1D Nanogratings ». ACS Photonics 6, no 2 (25 janvier 2019) : 322–26. http://dx.doi.org/10.1021/acsphotonics.8b01541.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
46

Geng, Jiao, Liping Shi, Jukun Liu, Liye Xu, Wei Yan et Min Qiu. « Laser-induced deep-subwavelength periodic nanostructures with large-scale uniformity ». Applied Physics Letters 122, no 2 (9 janvier 2023) : 021104. http://dx.doi.org/10.1063/5.0138290.

Texte intégral
Résumé :
Femtosecond lasers are capable of fabricating uniform periodic nanostructures with a near-wavelength periodicity; however, it is challenging to produce subwavelength nanostructures with large-scale uniformity. Here, we investigate femtosecond laser-induced self-assembly of periodic nanostructures on Si-on-Pt hybrid ultrathin films via photothermal-induced oxidation. The coexistence of scattering light and surface plasmon polaritons on the hybrid films gives rise to a diversity of surface morphologies. Depending on the laser power and sample scanning velocity, beyond the traditional one-dimensional nanogratings that exhibit a near-wavelength periodicity, two types of nanostructures with subdiffraction-limit periodicity while large-scale uniformity are also observed. The first type, occurring at high laser energy and low scanning velocity, is generated by the spatial frequency doubling of the traditional laser-plasmon-interfering nanogratings. It exhibits a periodicity of [Formula: see text]. The second type, deep-subwavelength nanostructures, takes place at low pulse energy or low scanning velocity. It is in the form of two-dimensional nanoparticles and has a periodicity of [Formula: see text]. The far-field laser-plasmon interference associated with near-field scattering is attributed to the formation of such deep-subwavelength nanostructures, as confirmed by finite-difference time-domain numerical simulations. Our work provides a route toward high-throughput laser fabrication of large-scale deep-subwavelength periodic nanostructures.
Styles APA, Harvard, Vancouver, ISO, etc.
47

Bibicheva S. A., Rupasov A. E., Danilov P. A., Ionin N. A., Smirnov N. A, Kudryashov S. N., Shelygina R. A. et Zakoldaev R. A. « Self-organizing half-wave gratings on the surface of silica glass ». Optics and Spectroscopy 130, no 4 (2022) : 437. http://dx.doi.org/10.21883/eos.2022.04.53732.58-21.

Texte intégral
Résumé :
The interaction of femtosecond laser pulses with the surface of silica glass has been studied. As a result of interference between the incident radiation and surface plasmon polaritons, the formation of self-organizing subwavelength periodic structures with a period of 250 nm was observed. The minimum pulse energy at which recording occurs without surface ablation has been revealed. Keywords: direct laser recording, femtosecond laser pulses, silica, nanogratings.
Styles APA, Harvard, Vancouver, ISO, etc.
48

Gu, Qiong Chan, Xiao Xiao Jiang, Jiang Tao Lv et Guang Yuan Si. « Dense Nanorods for Enhanced Sensing of Complex Mixed Solution ». Advanced Materials Research 1049-1050 (octobre 2014) : 11–14. http://dx.doi.org/10.4028/www.scientific.net/amr.1049-1050.11.

Texte intégral
Résumé :
We show wafer-scale nanorods fabrication using interference lithography and ion milling techniques. Both one-dimensional (1D) and two-dimensional (2D) nanogratings are achieved. Complementary structures of nanorods and nanoholes are demonstrated with tunable and enhanced optical responses. By combining such nanostructures with attenuated total reflection (ATR) components, we show significantly enhanced absorbance measurements. The results shown in this paper may enable new opportunities for plasmon-assisted sensing and spectroscopy.
Styles APA, Harvard, Vancouver, ISO, etc.
49

Das, Narottam, Ayman Karar, Chee Leong Tan, Kamal Alameh et Yong Tak Lee. « Impact of Nanograting Phase-Shift on Light Absorption Enhancement in Plasmonics-Based Metal-Semiconductor-Metal Photodetectors ». Advances in Optical Technologies 2011 (16 août 2011) : 1–8. http://dx.doi.org/10.1155/2011/504530.

Texte intégral
Résumé :
The finite difference time-domain (FDTD) method is used to simulate the light absorption enhancement in a plasmonic metal-semiconductor-metal photodetector (MSM-PD) structure employing a metal nanograting with phase shifts. The metal fingers of the MSM-PDs are etched at appropriate depths to maximize light absorption through plasmonic effects into a subwavelength aperture. We also analyse the nano-grating phase shift and groove profiles obtained typically in our experiments using focused ion beam milling and atomic force microscopy and discuss the dependency of light absorption enhancement on the nano-gratings phase shift and groove profiles inscribed into MSM-PDs. Our simulation results show that the nano-grating phase shift blue-shifts the wavelength at which the light absorption enhancement is maximum, and that the combined effects of the nano-grating groove shape and phase shift degrade the light absorption enhancement by up to 50%.
Styles APA, Harvard, Vancouver, ISO, etc.
50

Steele, Jennifer M., Chae M. Ramnarace et William R. Farner. « Controlling FRET Enhancement Using Plasmon Modes on Gold Nanogratings ». Journal of Physical Chemistry C 121, no 40 (3 octobre 2017) : 22353–60. http://dx.doi.org/10.1021/acs.jpcc.7b07317.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
Nous offrons des réductions sur tous les plans premium pour les auteurs dont les œuvres sont incluses dans des sélections littéraires thématiques. Contactez-nous pour obtenir un code promo unique!

Vers la bibliographie