Article
Engineering, Electrical & Electronic
Weidong Zhang, Hung Chiang, Te Wen, Lulu Ye, Hai Lin, Haitan Xu, Qihuang Gong, Guowei Lu
Summary: Coupled plasmonic systems are of interest for their optical properties and potential applications. An improved method for mapping geometric configurations to optical properties accurately is developed, allowing for the realization of low-loss cavity and interesting effects in metallic nanoparticles. Asymmetric coupling is predicted to lead to chirality and directional energy transfer in hybrid plasmonic systems.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Marie S. Rider, Rakesh Arul, Jeremy J. Baumberg, William L. Barnes
Summary: The strong coupling between molecules and surface plasmons allows for long-range molecular energy transfer, with gratings playing a crucial role in breaking the translational invariance of the system and facilitating the coupling between molecules and surface plasmons.
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
Optics
Yujia Guo, Kaixin Zhang, Ming Zhang, Yingjie Chai, Ying Du, Guohang Hu
Summary: Gold nanojets with various morphologies, fabricated on gold thin film by femtosecond laser irradiation, exhibit near-field localized surface plasmon resonance and photothermal effects, supporting potential applications in high-resolution imaging, nanomanipulation, and sensing. Confined electron oscillations in LSPR lead to intense local EM field enhancement, improving vertical resolution down to nanoscale at the end of gold tip. Periodic nanojet arrays printed with different geometries show potential as refractometric sensors with high sensitivity and reproducibility, promoting fs laser printing as a precise tool for nanoarchitecture in optical imaging, nanomanipulation, and sensing applications.
Article
Nanoscience & Nanotechnology
Chunlei Huang, Yingwu Zhou, Genjian Yu, Jing Zeng, Qin Li, Kaize Shen, Xuejin Wu, Rongxiang Guo, Cheng Zhang, Biao Zheng, Jun Wang
Summary: A highly sensitive and selective long-period fiber gratings sensor based on surface plasmon resonance was developed for As3+ detection, utilizing glutathione-functionalized Au nanoparticles as a signal amplification tag. The sensor can detect As3+ at concentrations ranging from 0.02 to 2 ppb, exhibiting excellent specificity against other metal ions. This fiber sensor has the potential for As3+ detection in pond water samples, with the advantages of low cost, high sensitivity, and a simple structure.
Article
Optics
Qiuxiang Zhu, Weichu Xiao, Wenguo Li, Lincheng Zhang, Yaqi Deng, Xuejun Zhang, Zhengbo Jian, Xiuxiu Dong
Summary: Investigating the coupling mechanism between surface plasmons and excitons is crucial for achieving efficient and stable excitonic optoelectronic devices. By sputtering Au nanoparticles on CdS microbelts, the energy coupling effect mediated by surface plasmons was explored, leading to enhanced excitonic emission intensity and red-shift of peaks in Fabry-Perot resonant lasing spectra. The temperature-dependent photoluminescence analysis indicated that the optical phenomenon may be attributed to the exciton-phonon coupling.
Article
Materials Science, Multidisciplinary
Jinmei Song, Yanpeng Shi, Xiaoyu Liu, Meiping Li, Xiaodong Wang, Fuhua Yang
Summary: Enhanced extraordinary optical transmission (EOT) is achieved in the terahertz (THz) region by a gold hole array with a concentric hemisphere, resulting in significantly enhanced transmission intensity and bandwidth, as well as reduced structure size. The optical characteristics of the hemisphere-in-hole structure are thoroughly analyzed, and altering the shapes and sizes of the central particles affects the enhanced EOT. This research expands the application prospects for many THz plasmonic devices.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Engineering, Electrical & Electronic
Jhuma Pan, Sachin Kumar Srivastava
Summary: A meta-grating-based SPR sensor was studied for its self-referencing operation in the near-infrared region using spectral interrogation technique. The introduction of a high RI dielectric material, SiON film, between the dielectric metasurface and metal layer enabled self-referencing in the sensor. The proposed sensor showed optimized geometrical parameters and achieved high sensitivity up to 1150 nm/RIU with a high FOM of 442.31 RIU(-1).
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Physical
Aymen Bouali, Montacer Dridi, Florent Colas, Chantal Compere
Summary: In this study, it was found that the symmetry of 2D arrays of gold nanoparticles significantly impacts the sensitivity to refractive index changes. Utilizing asymmetric nanoparticle layouts can enhance sensitivity, and further reducing symmetry can improve sensor performance. By changing the polarization of incident light, such asymmetric nanostructures can function as sensors based on SERS and LSPR plasmon.
Article
Chemistry, Physical
Sixian Ren, Lei Zhou, Jinpeng Yang, Yun Zhou
Summary: The study introduces a novel polarizing color filter design based on a one-dimensional subwavelength grating, allowing for different colors of TM-polarized light transmission by adjusting the geometric parameter of period. Theoretical analyses show that cavity modes and guide mode resonant contribute to enhancing optical TM polarized light transmission.
Review
Chemistry, Multidisciplinary
Hong Wei, Xiaohong Yan, Yijie Niu, Qiang Li, Zhili Jia, Hongxing Xu
Summary: This study reviews the impact of surface plasmons in metal nanostructures on spontaneous emission and excitons, as well as the progress in studying the strong coupling of plasmons and excitons. It focuses on the coupling of plasmon modified spontaneous emission and quantum emitters.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
B. S. Kavitha, N. K. Radhika, Sai Siva Gorthi, S. Asokan
Summary: This study introduces a highly sensitive and label-free technique for DNA detection using a reduced graphene oxide-coated etched Fiber Bragg Grating sensor. The sensor demonstrates a detection limit of 261.87 pg/μl and shows a linear response to dsDNA concentration in the range of 1 ng/μl to 50 ng/μl with excellent stability and repeatability. A technique utilizing UV spectrometry is proposed to quantitatively measure the DNA bound to the sensor and evaluate the DNA binding efficacy of the rGO coating.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Physical
Siriporn Anuthum, Fugo Hasegawa, Chutiparn Lertvachirapaiboon, Kazunari Shinbo, Keizo Kato, Kontad Ounnunkad, Akira Baba
Summary: The study demonstrates the fabrication of plasmonic photothermal silver nanoparticle grating films, which can effectively convert light into heat. Compared with the reference evaporated silver film, the grating film generates significantly higher heat under solar light.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Zeinab Khaghani, Mahmood Hosseini Farzad, Asghar Asgari
Summary: This article introduces a planar nanostructure in magnetoplasmonics with enhanced transverse magneto-optical activity. It analyzes the magneto-structures containing both a metal layer and a linear array of nanorods and compares them with a conventional three-layer structure based on transverse magneto-optical Kerr effect. The results show significant improvement in the proposed structures, especially in refractive index sensitivity, making them suitable for biosensing applications. The idea presented here can be applied to other three-layer structures, leading to improvement in their magneto-optical activity and refractive index sensitivity.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Ying Guo, Lei Zhang, Xiaojian Meng, Jianshe Li, Shuguang Li
Summary: This paper proposes a sucrose-concentration sensor based on microstructured fiber that exhibits high sensitivity, low hysteresis, and good stability at room temperature. The sensor utilizes the resonance coupling between cladding mode and surface plasmon mode to track concentration variations. Experimental results show that the sensor has wide response-range, high sensitivity, and fine resolution, with performance closely matching theoretical predictions.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Franz-Philipp Schmidt, Arthur Losquin, Ferdinand Hofer, Andreas Hohenau, Joachim R. Krenn, Mathieu Kociak
Article
Nanoscience & Nanotechnology
Martin Belitsch, Christian Gruber, Harald Ditlbacher, Andreas Hohenau, Joachim R. Krenn
Article
Nanoscience & Nanotechnology
Gernot Schaffernak, Markus K. Krug, Martin Belitsch, Marija Gasparic, Harald Ditlbacher, Ulrich Hohenester, Joachim R. Krenn, Andreas Hohenau
Article
Chemistry, Physical
Benedek J. Nagy, Zsuzsanna Papa, Laszlo Peter, Christine Prietl, Joachim R. Krenn, Peter Dombi
Article
Chemistry, Physical
Veronika Tretnak, Ulrich Hohenester, Joachim R. Krenn, Andreas Hohenau
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Chemistry, Physical
Markus Krug, Israa Haidar, Iman Ragheb, Joachim R. Krenn, Andreas Hohenau, Viktor Kapetanovic, Matthieu Bugnet, Guillaume Radtke, Gianluigi A. Botton, Georges Levi, Leila Boubekeur-Lecaque, Nordin Felidj
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Chemistry, Physical
Razieh Talebi, Harald Ditlbacher, Joachim R. Krenn, Andreas Hohenau
Summary: The study investigates the coupling of silver iodide (AgI) with plasmon modes, utilizing aluminum (Al) as the material. Results demonstrate that AgI, when combined with Al, forms an attractive platform to achieve efficient plasmon-exciton coupling in the blue spectral range through fabricated and structured emitters.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Franz-Philipp Schmidt, Arthur Losquin, Michal Horak, Ulrich Hohenester, Michael Stoger-Pollach, Joachim R. Krenn
Summary: The study utilizes cathodoluminescence (CL) spectroscopy in a transmission electron microscope to investigate the radial breathing mode of plasmonic silver nanodisks. It reveals a spectral shift in the CL spectra acquired from both sides induced by the electron beam, confirmed through numerical simulations. The interference of CL emission patterns of an electron-beam-induced dipole and the breathing mode is identified as a physical effect that can limit fidelity in CL measurements.
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
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)
Proceedings Paper
Engineering, Electrical & Electronic
Peter Sandor, Bela Lovasz, Zsuzsanna Papa, Balazs Banhegyi, Peter Racz, Christine Prietl, Joachim R. Krenn, Peter Dombi
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
B. Lovasz, P. Sandor, G. Z. Kiss, B. Banhegyi, Z. Papa, J. Budai, C. Prietl, J. R. Krenn, P. Dombi
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)
(2021)
