Article
Optics
Zihad Azad, Muhammad Anisuzzaman Talukder
Summary: Near-infrared plasmonic lasers play a crucial role in developing sustainable nanoscale optoelectronic circuitry. The research team designed an efficient plasmonic laser that works in the near-IR region as both surface- and edge-emitting laser with a collimated far-field beam pattern. By using 2D metal nanohole arrays or grooves, they achieved collimation and focusing of the far-field beam patterns for both surface and edge emissions. The optimized collimator successfully produced a narrow spot of 3 degrees x 4 degrees for edge emission.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Runcheng Liu, Wen Yang, Jiajun Lu, Muhammad Shafi, Mingshun Jiang, Shouzhen Jiang
Summary: In this study, a Ta2C coating suitable for sensing was successfully prepared by optimizing the photo-deposition time, enhancing the performance of the sensor. The uniform coating of Ta2C increased the wavelength sensitivity and FOM of the sensor and facilitated the generation of surface plasmon polariton. The TFBG/Au/Ta2C sensor is a promising approach for biochemical analysis and trace detection.
Article
Nanoscience & Nanotechnology
Adi Salomon, Heiko Kollmann, Manfred Mascheck, Slawa Schmidt, Yehiam Prior, Christoph Lienau, Martin Silies
Summary: Localized surface plasmon resonances in metallic films can couple to form collective behavior, affecting the linear and nonlinear optical properties of the sample. Introduction of defects in nanocavity arrays leads to hot-spot formation and spatially confined fluctuations of the plasmonic field. By manipulating hot spot lifetime, the optical properties of nanosystems can be tailored through coherent couplings and tailored disorder.
Article
Optics
Yan Xu, Jianbo Yue, Manzhuo Wang, Xiaoqiang Sun, Daming Zhang
Summary: This article theoretically demonstrates a narrow-band Bragg grating filter based on a long-range surface plasmon polariton waveguide, which can achieve a change in the central wavelength through temperature adjustment.
Article
Optics
Hongda Yu, Zhe Shen, Kaiwen Jiang
Summary: This Letter reports the intrinsic relationship among surface plasmon polaritons, lateral optical force, and surface plasmon-coupled emission. The unidirectional excitation of surface plasmon polaritons through spin-orbit coupling generates asymmetric scattering and counter-intuitive lateral optical force. The influence of lateral optical force can be observed in surface plasmon-coupled emission patterns.
Article
Optics
Elham Ilbeygi, Mohammadmehdi Jahanbakhshian, Maghsoud Arshadi Pirlar, Rouhollah Karimzadeh
Summary: This study describes a plastic optical fiber sensor covered with spherical gold nanoparticles for detecting magnetic fields based on surface plasmon resonance. By recording the intensity of light output from the fibers with a smartphone, the impact of magnetic fields on the output light intensity of the fiber is confirmed.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Physical
R. Selvapriya, T. Abhijith, V. Ragavendran, V. Sasirekha, V. S. Reddy, J. M. Pearce, J. Mayandi
Summary: This study utilized multishaped silver nanoparticles to enhance the performance of dye sensitized solar cells (DSSCs), improving light harvesting, charge separation and carrier transportation efficiency. Experimental results showed a significant increase in power conversion efficiency of DSSC with the utilization of multishaped AgNPs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
Kai-Xin Xie, Qian Liu, Shu-Shu Jia, Xiu-Xian Xiao
Summary: The introduction of a hollow plasmonic structure led to enhanced surface plasmon-coupled emission (SPCE), resulting in significant fluorescence signal enhancements. This was primarily attributed to the unique hot-spot plasmonic structure between GNS and gold substrate, the intense electromagnetic field of GNSs, and the strong coupling interactions between fluorescence and surface plasmons.
ANALYTICA CHIMICA ACTA
(2021)
Article
Optics
L. Avalos, A. K. Gonzalez-Alcalde, E. Chaikina, E. E. Garcia-Guerrero, A. A. Maradudin, E. R. Mendez
Summary: The study investigates the optical properties of metallic lamellar gratings with sub-wavelength period as a function of groove depth and width. Anomalies are observed under p-polarized illumination due to the excitation of surface plasmon polaritons (SPPs) and their interaction with plasmonic and photonic modes. The propagation constant of SPPs is affected by the presence of corrugations, with new resonances appearing for grooves deeper than half a wavelength.
OPTICS COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Yong Zhao, Yuechun Shi, Pan Dai, Shengping Liu, Lijun Hao, Yuxin Ma, Xiangfei Chen
Summary: This paper proposes, analyzes, and demonstrates a side-coupled Fabry-Perot resonator filter consisting of two dissimilar waveguides with pi phase-shifted Bragg grating. The resonance circuit is formed by mode conversion between the TE0 modes of the two waveguides, allowing for a wide free spectral range or a single strong resonance at the central wavelength of mode conversion. Compared to conventional F-P resonators, the proposed resonator can only couple one transverse mode to the bus waveguide, resulting in no intrinsic reflection and low resonance loss.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Optics
Hamid Suleman, Akram Hajebifard, Choloong Hahn, Anthony Olivieri, Pierre Berini
Summary: Resonant plasmonic nanostructures were fabricated on the end-facet of a solid-core polarization-maintaining photonic crystal fiber, demonstrating rich sets of Fano resonances when excited by supercontinuum light and offering potential sensing applications with a shift in spectra when the medium covering the nanoholes changes.
Article
Chemistry, Analytical
Arnaldo Leal-Junior, Guilherme Lopes, Leandro C. Macedo, Welton Duque, Anselmo Frizera, Carlos Marques
Summary: This paper presents the development of an optical fiber sensor system for multiparametric assessment of temperature and turbidity in liquid samples. The sensors combine fiber Bragg gratings, intensity variation, and surface plasmon resonance sensors. The research finds that the intensity variation sensors can effectively detect turbidity, while the surface plasmon resonance sensors can detect refractive index variations. The proposed sensor system can be used for dynamic range assessment of turbidity increase and also enable indirect assessment of turbidity.
Article
Engineering, Electrical & Electronic
Maxime Lobry, Hadrien Fasseaux, Mederic Loyez, Karima Chah, Erik Goormaghtigh, Ruddy Wattiez, Francesco Chiavaioli, Christophe Caucheteur
Summary: Gold-coated tilted fiber Bragg gratings (TFBGs) have been extensively studied for biosensing applications, with a more sensitive demodulation method based on the intersection of the upper and lower envelopes of TFBG spectra being reported in this paper. This method has been successfully applied in detecting HER2 proteins, and practical improvements such as superimposing a uniform FBG and implementing a micro-fluidic system have been made to enhance the sensing platform for practical applications.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Xingxing Meng, Tianxiang Hang, Hui Zhou, Zongrui Zhang, Chuanping Li
Summary: In order to achieve reliable and ultrasensitive detection for disease markers in PEC bioanalysis, constructing and nanoengineering of ideal photoelectrodes and signal transduction strategies are of vital importance. This study tactically designed a non-/ noble metal coupled plasmonic nanostructure (TiO2/r-STO/Au) with high-efficient PEC performance. The research proposed a new type of plasmonic nanomaterial for ultrasensitive PEC bioanalysis, showing excellent detection performance with a LOD as low as 1.1 fg/mL.
ANALYTICA CHIMICA ACTA
(2023)
Article
Engineering, Electrical & Electronic
Arnaldo Leal-Junior, Guilherme Lopes, Renan Lazaro, Welton Duque, Anselmo Frizera, Carlos Marques
Summary: This paper presents a novel optical fiber sensor system for salinity monitoring using data fusion in different optical fiber sensors approaches. A surface Plasmon resonance (SPR) sensor in a D-shaped optical fiber is developed in conjunction with a fiber Bragg grating (FBG). The SPR sensors detect the liquid sample salinities through the refractive index variation, while the FBG sensors estimate the salinity through the thermal dynamics. The combination between the SPR and FBG sensors results in an improvement of salinity monitoring with a root mean squared error of 0.001%.
OPTICAL FIBER TECHNOLOGY
(2023)
Article
Instruments & Instrumentation
Mana Toma, Yuji Itakura, Kotaro Kajikawa
Summary: The arrangement of Ag nanodomes has a noticeable impact on their optical properties and performance, with a reduction in PS bead surface coverage leading to decreased reflectance, a longer resonance wavelength, and improved bulk refractive index sensitivity. These findings suggest that optimization of the arrangement of Ag nanodomes is crucial for enhancing the performance of plasmonic biosensors.
SENSORS AND MATERIALS
(2021)
Article
Chemistry, Physical
Hana Sipova-Jungova, Ludmila Jurgova, Erika Hemmerova, Jiri Homola
Summary: Functional materials with organic coatings on inorganic substrates are considered potential platforms for various applications, leading to the investigation of their interactions with the micro-environment becoming a key research direction in surface science. This study focused on the interactions of Tris buffer with self-assembled monolayers (SAMs) of alkanethiols and short DNAs using a surface plasmon resonance (SPR) biosensor, showing that the interaction is a complex multiphasic process. The study also revealed how the interaction of Tris with immobilized DNA molecules can affect the determination of surface concentrations and hybridization efficiencies.
APPLIED SURFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Bernadette Lechner, Simone Hageneder, Katharina Schmidt, Mark P. Kreuzer, Rick Conzemius, Erik Reimhult, Ivan Barisi, Jakub Dostalek
Summary: The growth of surface-attached single-stranded DNA chains is monitored using an evanescent wave optical biosensor that combines surface plasmon resonance and optical waveguide spectroscopy. This technique allows for accurate measurement of the thickness, volume content, and density gradients of the DNA brushes in real time, providing important insights for sensitive and rapid assays in affinity-based biosensors.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Simone Hageneder, Vanessa Jungbluth, Regina Soldo, Christian Petri, Matthias Pertiller, Marjut Kreivi, Andreas Weinhaeusel, Ulrich Jonas, Jakub Dostalek
Summary: A novel approach for signal enhancement in fluorescence affinity biosensors and assays is reported, utilizing a compacted structure of captured target molecules at the sensor surface along with optical probing using tightly confined surface plasmon fields. This approach utilizes a thermoresponsive hydrogel as a binding matrix and low-molecular-weight ligands for specific detection of human IgG antibodies against the Epstein-Barr virus. The use of such ligands preserves the thermoresponsive properties of the hydrogel-based architecture, which was not feasible with regular antibodies due to their higher molecular weight.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Daria Kotlarek, Kaizheng Liu, Nestor G. Quilis, Dominik Bernhagen, Peter Timmerman, Paul Kouwer, Jakub Dostalek
Summary: A new type of hydrogel thin film based on PIC is explored for potential use in evanescent wave optical affinity biosensors. The film can be post-modified with biofunctional molecules and has shown resistance to fouling in complex biological fluids.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Michala Forinova, Alina Pilipenco, Ivana Visova, N. Scott Lynn, Jakub Dostalek, Hana Maskova, Vaclav Honig, Martin Palus, Martin Selinger, Pavlina Kocova, Filip Dycka, Jan Sterba, Milan Houska, Marketa Vrabcova, Petr Horak, Judita Anthi, Chao-Ping Tung, Chung-Ming Yu, Chi-Yung Chen, Yu-Chuan Huang, Pei-Hsun Tsai, Szu-Yu Lin, Hung-Ju Hsu, An-Suei Yang, Alexandr Dejneka, Hana Vaisocherova-Lisalova
Summary: Novel biosensing technology has been developed for rapid and sensitive detection of SARS-CoV-2 in untreated clinical samples, offering improved sensitivity and antifouling capabilities. The biosensor design allows for direct quantitative analysis without the need for additional amplification steps, with the potential to serve as a versatile platform for a wide range of biosensing applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Biophysics
Tomas Springer, Zdenek Krejcik, Jiri Homola
Summary: A novel and extremely sensitive label-free optical biosensor-based assay for the detection of miRNAs has been proposed, which enhances specific sensor response while suppressing non-specific binding interference. The assay has been successfully applied to detect miRNAs related to myelodysplastic syndromes in blood plasma, achieving a low detection limit and enabling multiplexed miRNA detection.
BIOSENSORS & BIOELECTRONICS
(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, Multidisciplinary
Roger Hasler, Ciril Reiner-Rozman, Stefan Fossati, Patrik Aspermair, Jakub Dostalek, Seungho Lee, Maria Ibanez, Johannes Bintinger, Wolfgang Knoll
Summary: A novel multivariable system that combines a transistor with fiber optic-based surface plasmon resonance spectroscopy has been developed. The system allows for discrimination of mass and charge contributions for binding assays on the same sensor surface. The sensor geometry has been optimized and the reversibility of plasmon resonance wavelength shifts has been demonstrated. The system was successfully tested with a layer-by-layer assembly of polyelectrolytes and a thrombin binding assay.
Article
Chemistry, Physical
Simone K. Auer, Stefan Fossati, Yevhenii Morozov, Dario Cattozzo Mor, Ulrich Jonas, Jakub Dostalek
Summary: The swelling and collapsing of thermo-responsive polymer networks were investigated to understand their kinetics and maximum actuation speed. A thin hydrogel film based on poly(N-isopropylacrylamide) was attached to gold nanoparticle arrays for localized heating. Changes in the refractive index of the film were monitored to observe the reversible volume transition. The results showed that the hydrogel film can respond rapidly in the swollen state, depending on the heating pulse and ambient temperature.
JOURNAL OF PHYSICAL CHEMISTRY B
(2022)
Article
Chemistry, Multidisciplinary
Hoang Thi Thanh Tam, Mana Toma, Kotaro Kajikawa
Summary: Polyesters, particularly PET and PEN, have been identified as potential candidates for daytime radiative cooling (RC) due to their significant temperature drop and comparable RC efficiency to other materials. Polyesters offer advantages in terms of chemical stability, moldability, and impact resistance, making them suitable for daytime RC of solar cells.
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2022)
Review
Chemistry, Analytical
Erich Kny, Ciril Reiner-Rozman, Jakub Dostalek, Achim-Walter Hassel, Christa Noehammer, Florian Pfaffeneder-Mantai, Sabine Szunerits, Viktoria Weber, Wolfgang Knoll, Christoph Kleber
Summary: Healthcare is undergoing major transformations, necessitating the use of new technologies to support personalized medicine and disease prevention. Biomarkers in bodily fluids such as blood, urine, sweat, or saliva can be used for early diagnosis, disease monitoring, and predicting response to treatment. The development of non-invasive analysis methods has been driven by the need for patients to use and apply diagnostic approaches themselves. This review focuses on novel sensing systems for detecting various endogenous biomarkers associated with human diseases in bodily fluids and exhaled breath.
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
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.
Review
Chemistry, Multidisciplinary
Fiona Diehl, Simone Hageneder, Stefan Fossati, Simone K. Auer, Jakub Dostalek, Ulrich Jonas
Summary: This review discusses the importance of plasmonic nanomaterials in various technologies and introduces a new class of tunable plasmonic nanomaterials that combine metallic nanostructures and responsive hydrogels. The article provides an overview of the principles, design rules, and current implementations of responsive hydrogels and metallic nanostructures, as well as their combination for rapid mechanical actuation and controlled confinement of light. The review also presents the latest advances in plasmonic biosensing, optically driven miniature actuators, and light-fueled micromachines.
CHEMICAL SOCIETY REVIEWS
(2022)
