Article
Chemistry, Physical
Marcello Condorelli, Lucio Litti, Mario Pulvirenti, Vittorio Scardaci, Moreno Meneghetti, Giuseppe Compagnini
Summary: This study presents a cost-effective, reusable, and high-responsive SPR device based on silver nanoplate paved PMMA cuvettes, which achieve high refractive index sensitivities using nanoplates with plasmon resonances in the near-infrared region. The experimental results align with calculated extinction cross-section using a Boundary Element Method (BEM) approach, demonstrating the effectiveness of the simple optical device for integration and miniaturization.
APPLIED SURFACE SCIENCE
(2021)
Article
Optics
Hasan Sarker, Mohammad Faisal, Md Aslam Mollah
Summary: This paper studies a novel photonic crystal fiber (PCF) based plasmonic biosensor with high sensitivity and performance using numerical methods. The sensor has a simple symmetrical design, is easy to fabricate, cost-effective, and offers higher sensitivity, making it suitable for various sensing applications and biochemical detection.
Article
Chemistry, Physical
Benjamin J. Roman, Sofia A. Shubert-Zuleta, Grant Shim, Victoria Kyveryga, Mohamed Faris, Delia J. Milliron
Summary: We report the dielectric sensitivity of fluorine and tin codoped indium oxide nanocubes and its dependence on their sharp faceting and tin-dopant concentration. The plasmon mode associated with the nanocube corners is the most sensitive and increasing dopant concentration enhances dielectric sensitivity. Simulation results suggest that the plasmon modes associated with the edges and faces of the nanocubes are less sensitive than expected due to the presence of band bending and a resulting surface depletion layer.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Benjamin J. Roman, Sofia A. Shubert-Zuleta, Grant Shim, Victoria Kyveryga, Mohamed Faris, Delia J. Milliron
Summary: This study reports the dielectric sensitivity of fluorine and tin codoped indium oxide nanocubes and its dependence on their sharp faceting which gives rise to multiple plasmonic modes and on their tin-dopant concentration. It is found that the plasmon mode associated with the nanocube corners is the most sensitive and that raising dopant concentration increases dielectric sensitivity.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Optics
Tulika Khanikar, Vinod Kumar Singh
Summary: A compact and ultra-convenient fiber optic surface plasmon resonance sensor is proposed, utilizing a V groove fiber. The sensor demonstrates high wavelength sensitivity, wide range of analyte detection, convenient design and fabrication, as well as competitive sensing performance.
Article
Physics, Applied
J. D. Ortiz, J. P. del Risco, J. D. Baena, R. Marques
Summary: The paper proposes an extension of Babinet's principle for plasmonic metasurfaces by redefining the concept of complementary screens and finding impedance relations, leading to a simple relation between the transmission matrices of two complementary plasmonic metasurfaces. The theory is valid under the assumptions of the electroquasistatic approximation and plane waves in the far field, with potential applications in the design of optical plasmonic metasurfaces, nanocircuits, and nanoantennas.
APPLIED PHYSICS LETTERS
(2021)
Article
Optics
Yin Liu, Qiming Liao, Zhipeng Wang, Yu Bi, Lingling Huang, Yongtian Wang, Xiaowei Li
Summary: The plasmonic fiber-tip based on metallic metasurface and multimode fiber alleviates the limitation of large sensing size and provides a promising way to manipulate light through localized surface plasmon resonance. A compact magnetic field fiber-optic sensor, combining the advantages of plasmonic fiber-tip and magnetic fluid, has been proposed and experimentally verified with linear response and high magnetic strength sensitivity. The results also demonstrate the feasibility of pseudo-vector magnetic field sensing.
Article
Chemistry, Physical
Ivana Fabijanic, Maja Micetic, Matej Bubas, Vesna Janicki, Sigrid Bernstorff, Jordi Sancho-Parramon
Summary: This work demonstrates the formation of hollow nanoparticle layers using metal island films as templates, where the morphology and plasmonic properties of the islands gradually change with the increase of titration solution concentration. The hollow island films obtained with large titration concentration show a significant enhancement in refractive index sensitivity factor and figure of merit compared to untreated samples, showing promise for cost-effective fabrication of plasmonic sensors.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Yunlu Jiang, Alexey Krasavin, Mazhar E. Nasir, Pan Wang, Anatoly Zayats
Summary: This study investigates the effect of environmental humidity on the optical response of plasmonic nanorod metamaterials. It is observed that the change in relative humidity leads to a significant alteration in transmission rate. By coating the nanorods with a hydrophilic monolayer, the fractional change in transmission is doubled, providing potential for the development of high-sensitivity relative humidity and dew condensation sensors.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Chemistry, Analytical
Kyeong Rim Ryu, Ji Won Ha
Summary: The study demonstrates that the homogeneous LSPR IFs located at the long wavelength side of the LSPR scattering peak show the highest sensitivity for chemical adsorption detection, compared to the counterpart LSPR peak maxima.
Article
Materials Science, Multidisciplinary
Zen A. Sbeah, Rammani Adhikari, Vishal Sorathiya, Diksha Chauhan, R. S. Ponomarev, Ram Prakash Dwivedi
Summary: This paper presents a plasmonic metamaterial sensor utilizing an I-shaped gold resonator. The sensor is simulated using the finite-element method (FEM) to detect gas and liquid (ethanol solutions) in the infrared wavelength range of 0.5-2.5 & mu;m. The design exhibits distinct absorption characteristics across the range of 0.5-2.5 & mu;m, tailored for different gas and liquid sensing applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Computer Science, Information Systems
M. Hussayeen Khan Anik, M. Ifaz Ahmad Isti, S. M. Riazul Islam, Sakib Mahmud, Hriteshwar Talukder, Md. Jalil Piran, Shovasis Kumar Biswas, Kyung-Sup Kwak
Summary: The proposed SPR-based PCF sensor demonstrates good functionality with high wavelength and amplitude sensitivity, as well as a broad range of analyte detection and high detection accuracy. Numerical investigations show that the sensor is capable of effectively detecting low refractive index analytes.
Article
Chemistry, Physical
Hamid Bahador, Hamid Heidarzadeh
Summary: A novel highly sensitive refractive index sensor using Au and Ag elliptic-shaped nanoparticles was proposed in this research work. The optimal arrangement with strong vertical coupling resulted in high sensitivity and better optical sensing properties of the nanostructure. The nanoparticles' field was remarkably enhanced at their point of coupling, demonstrating plasmonic resonance peaks.
Article
Chemistry, Multidisciplinary
Dong-In Shin, Seong Soo Yoo, Seong Hun Park, Gaehang Lee, Wan Ki Bae, Seok Joon Kwon, Pil Jin Yoo, Gi-Ra Yi
Summary: Nanophotonics relies on precise control of refractive index, and this study demonstrates a versatile way of tuning refractive index using heteroligand gold nanoparticles that form 2D superstructures at the oil-water interface. These 2D superstructures exhibit the highest-ever refractive index in visible and NIR light, and the plasmonic effects are successfully explained by a percolation model.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Sheng-Qing Zhu, Xiao-Dan Huang
Summary: In this paper, an electrostatic self-assembly method was used to fabricate sensitive plasmonic substrates in the form of silver nanoplate films. Silver nanoplate solutions with adjustable sizes and different concentrations were prepared using a seed-mediated growth approach, and the deposited substrates were modified with amino groups. The Coulomb attraction between the modified substrates and the silver nanoplates enabled the uniform preparation of silver nanoplate films for surface plasmon sensing. The research results demonstrate that these films exhibit good refractive index sensing characteristics and can be used for detecting and analyzing environmental substances.
Article
Physics, Applied
Yong He, Shupei Lin, Hadrien Marc Louis Robert, Hong Li, Pu Zhang, Marek Piliarik, Xue-Wen Chen
Summary: This paper presents a theoretical framework of multiscale modeling and analysis for interferometric scattering microscopy (iSCAT), exploring the influence of sample shape, illumination, and detection schemes on interference contrast, and providing an explanation for the origin of interference phenomenon. Additionally, it investigates the point spread function of gold nanoparticles in a simplified cell environment.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Multidisciplinary Sciences
Hadrien M. L. Robert, Kristyna Holanova, Lukasz Bujak, Milan Vala, Verena Henrichs, Zdenek Lansky, Marek Piliarik
Summary: The study introduces a high-speed photothermal spatial light modulator capable of generating a step-like wavefront change without diffraction artifacts, used for quantitative phase imaging to capture nanometer-scale 3D displacements.
NATURE COMMUNICATIONS
(2021)
Review
Nanoscience & Nanotechnology
Hatice Altug, Sang-Hyun Oh, Stefan A. Maier, Jiri Homola
Summary: This Review presents the progresses in label-free nanophotonic biosensors based on photonic or dielectric surfaces and metasurfaces, and discusses their challenges and benefits in the fields of public health, well-being, and biosafety. Nanophotonic devices can control light and enhance light-matter interactions at subwavelength scales, offering exciting prospects for biosensing applications.
NATURE NANOTECHNOLOGY
(2022)
Article
Chemistry, Analytical
Jiri Slaby, Marketa Bockova, Jiri Homola
Summary: A new optical biosensor based on gold nanostripes array excited surface plasmons is presented, with theoretical analysis showing its improved detection sensitivity compared to conventional surface plasmon resonance biosensors. Experimental validation of the theoretical model demonstrates high refractive index sensitivity and resolution of the nanoplasmonic sensor. Additionally, the biosensor successfully detects microRNA biomarkers at low concentrations, showcasing its potential for sensitive and specific biomolecular detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Biochemistry & Molecular Biology
Anna Ligasova, Ivan Rosenberg, Marketa Bockova, Jiri Homola, Karel Koberna
Summary: This study introduces a novel approach for real-time measurement of uracil DNA glycosylase activity by immobilizing selected oligonucleotides on magnetic nanoparticles and utilizing Forster resonance energy transfer. The results demonstrate that this method provides more reliable data than using free oligonucleotides, and offers the possibility to investigate the relationship between uracil DNA glycosylase activity and the arrangement of oligonucleotide probes. Additionally, introducing a nick into oligonucleotides containing the target base (uracil) significantly decreases the activity of both bacterial glycosylase and glycosylases naturally present in nuclear lysates.
Article
Physics, Multidisciplinary
Martin Silhavik, Prabhat Kumar, Zahid Ali Zafar, Martin Misek, Martin Cicala, Marek Piliarik, Jiri Cervenka
Summary: Graphene aerogel exhibits anomalous superelastic behavior and can withstand high compressive and tensile strains. A quantitative origami model is developed to describe its stress-strain behavior.
COMMUNICATIONS PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Bela Lovasz, Peter Sandor, Gellert-Zsolt Kiss, Balazs Banhegyi, Peter Racz, Zsuzsanna Papa, Judit Budai, Christine Prietl, Joachim R. Krenn, Peter Dombi
Summary: This study explores nonadiabatic nano-optical electron tunneling in the transition region between multiphoton-induced emission and adiabatic tunnel emission in the near-field of plasmonic nanostructures. The measured photoemission spectra exhibit strong-field recollision driven by the nanoscale near-field for Keldysh gamma values between approximately 1.3 and approximately 2.2. At the same time, the photoemission yield shows a constant nonlinearity in intensity scaling, which is characteristic of multiphoton-induced emission.
Article
Materials Science, Multidisciplinary
Manuel Auer-Berger, Veronika Tretnak, Christian Sommer, Franz-Peter Wenzl, Joachim R. Krenn, Emil J. W. List-Kratochvil
Summary: The study utilizes plasmonic nanodisk arrays to enhance light emission from an organic white light-emitting diode. By incorporating aluminum as the nanodisk material and employing surface lattice resonances from a multipitch array, the broadband enhancement of light emission in the device is achieved. The experimental results align well with simulations, providing insights into the underlying physical mechanisms.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Hadrien M. L. Robert, Martin Cicala, Marek Piliarik
Summary: Having full control of light propagation is the ultimate goal of an imaging system. The introduction of a photothermally modulated SLM allows for the generation of arbitrarily shaped wavefront patterns with high responsiveness and unique advantages, such as fast response, absence of diffraction artifacts, and high transmittance.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Biophysics
Jiri Slaby, Jiri Homola
Summary: In this study, we analyze the performance of label-free optical biosensors in detecting analyte-induced refractive index changes. We propose an analytical model that relates the refractive index resolution to the parameters of the optical platform. Our findings demonstrate that the widely used figure of merit (FOM) is not suitable for guiding the design or predicting the performance of label-free optical biosensors. Therefore, we propose an extended definition of FOM to address its limitations. The validity of our approach is confirmed through numerical simulations and experiments, and we show that the analytical model not only predicts the performance of biosensors but also provides strategies for achieving optimal performance.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Physics, Multidisciplinary
Shupei Lin, Yong He, Delong Feng, Marek Piliarik, Xue-Wen Chen
Summary: We discovered that flat substrates with subnanometer surface undulations show notable speckle patterns when observed with high-sensitivity interference microscopy. We introduced the concept of optical fingerprints and demonstrated their use in position identification and displacement detection.
PHYSICAL REVIEW LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Martin Belitsch, Dmitry N. Dirin, Maksym V. Kovalenko, Kevin Pichler, Stefan Rotter, Ahmed Ghalgaoui, Harald Ditlbacher, Andreas Hohenau, Joachim R. Krenn
Summary: The study demonstrates the feasibility of using geometrically simple monolithic microscale CdSe/CdS nanoplatelet lasers as a promising option for various photonic applications. The CdSe/CdS nanoplatelets show high gain factor and emission pulse shortening.
MICRO AND NANO ENGINEERING
(2022)
Proceedings Paper
Nanoscience & Nanotechnology
Bela Lovasz, Peter Sandor, Gellert-Zsolt Kiss, Balazs Banhegyi, Peter Racz, Zsuzsanna Papa, Judit Budai, Christine Prietl, Joachim R. Krenn, Peter Dombi
Summary: Our work demonstrates nonadiabatic tunneling of photoelectrons in the near-field of gold nanostructures, and investigates its characteristics in the transition region between the multi-photon-induced photoemission and tunneling emission regimes.
Article
Chemistry, Multidisciplinary
Dario Grimaldi, Emil Kelderer, Dmitry N. Dirin, Maksym Kovalenko, Andreas Hohenau, Harald Ditlbacher, Joachim R. Krenn
Summary: This study demonstrates that the photoconductance of colloidal PbS/MAPbI(3) quantum dots in nanoscale gold electrode gaps exhibits a power law dependence on the light intensity. The research reveals the strong localization and high reproducibility of photocurrent generation, and shows that different geometries and excitation methods yield practically identical photocurrent responses.
NANOSCALE ADVANCES
(2022)
Article
Polymer Science
Yu-Min Wang, Anna Kalosi, Yuriy Halahovets, Iryna Romanenko, Jiri Slaby, Jiri Homola, Jan Svoboda, Andres de los Santos Pereira, Ognen Pop-Georgievski
Summary: This study compared the anti-fouling properties of poly(HPMA) brushes prepared by chemisorption and surface-initiated polymerization methods, finding that the latter exhibited better anti-fouling performance due to higher grafting density.
