Article
Physics, Applied
Xin Zheng, Jingjing Zhang, Yu Luo, Zhengxing Wang, Yi Ren, Tie Jun Cui
Summary: Plasmon antennas can enhance electromagnetic fields at a hotspot, but the challenge lies in increasing radiation efficiency without changing the emitter's radiation behavior.
PHYSICAL REVIEW APPLIED
(2022)
Article
Materials Science, Multidisciplinary
S. G. Castillo-Lopez, A. Marquez, R. Esquivel-Sirvent
Summary: By adjusting the value of the applied magnetic field, the dielectric function of the nanoparticle can be changed, leading to tuning of the radiative heat transfer and causing shifts in resonance frequencies, ultimately enhancing the heat transfer effect.
Article
Optics
Rakesh Arul, David-Benjamin Grys, Rohit Chikkaraddy, Niclas S. Mueller, Angelos Xomalis, Ermanno Miele, Tijmen G. Euser, Jeremy J. Baumberg
Summary: This study demonstrates a self-assembled gold nanoparticle multilayer that supports tunable collective plasmon-polariton resonances in the visible and infrared spectrum. The structure exhibits high stability and efficient light coupling, making it suitable for nanoscale Raman and infrared sensing applications.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Review
Optics
Li Hu, Zhiguang Sun, Yingdong Nie, Yingzhou Huang, Yurui Fang
Summary: Chiral near-fields, generated or enhanced by plasmonic and photonic nanostructures, serve as a bridge between chiral molecules and light wavelengths. They have significant applications in chiral molecule detection and optical force generation.
LASER & PHOTONICS REVIEWS
(2022)
Review
Chemistry, Multidisciplinary
Li Wang, Xun Xu, Qunfeng Cheng, Shi Xue Dou, Yi Du
Summary: This review summarizes the recent progress in NIR-driven photocatalysts and their applications, as well as strategies for harvesting NIR photons and related photocatalytic applications; it also discusses the application of NIR-active photocatalysts as electrocatalysts.
Article
Engineering, Biomedical
Zhouzhou Bao, Binge Deng, Yuqing Zhang, Xiaowei Li, Ziyang Tan, Zhuowei Gu, Bobo Gu, Zhifeng Shao, Wen Di, Jian Ye
Summary: A new approach using Raman imaging and data processing has been developed for rapid and accurate diagnosis of metastatic SLN during surgery, achieving an accuracy of 87.5%, which may outperform the existing histopathological assessment method.
Article
Nanoscience & Nanotechnology
Kang Qin, Kai Liu, Sheng Peng, Zongyan Zuo, Xiao He, Jianping Ding, Yanqing Lu, Yongyuan Zhu, Xuejin Zhang
Summary: Recent advances in near-field technology have allowed for further identification of surface-enhanced Raman scattering (SERS) enhancement theories and monitoring of SERS substrates. Using scattering-type scanning near-field optical microscopy, we verified the electromagnetic enhancement mechanism for SERS by studying an array of metal-insulator-metal (MIM) subwavelength structures. Our near-field optical measurements showed that the SERS enhancement factor (EF) varied across the finite array, with additional enhancements observed in periodic arrays and finite arrays with strong coupling effects.
Article
Chemistry, Physical
Swati Tanwar, Vishaldeep Kaur, Gagandeep Kaur, Tapasi Sen
Summary: Engineering hotspots in surface-enhanced Raman spectroscopy (SERS) by precisely controlling the assembly of plasmonic nanostructures can enhance the potential of SERS for single molecule detection. Plasmonic dimer nanoantennas with tunable gaps showed significant enhancements for single dye molecules, and were able to detect a single thrombin protein molecule in a 10 nm wide nanogap. These engineered nanoantennas have the potential to serve as a broadband SERS enhancer for specific detection of biological molecules with single-molecule sensitivity.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Sisi Yan, Jiacheng Sun, Bin Chen, Lang Wang, Sumin Bian, Mohamad Sawan, Haibin Tang, Liaoyong Wen, Guowen Meng
Summary: This article presents a universal SERS platform for reliable and sensitive identification of a wide range of analytes. The key to its success lies in the prepared slot-under-groove nanoarchitecture arrays, which enable strong coupled field enhancement and large spatial mode distribution, thereby delivering high sensitivity for small-sized analytes and large Raman gain for large-sized analytes.
Article
Physics, Applied
J. Barnett, D. Wendland, M. Lewin, K. G. Wirth, A. Hessler, T. Taubner
Summary: Surface phonon polaritons (SPhPs) are essential for nanophotonics due to their strong light-matter interaction on the nanoscale. SrTiO3 is a promising material for SPhPs with reversible and nonvolatile doping capabilities. By using s-SNOM measurements, physical quantities of SPhPs can be retrieved, showing the potential of SrTiO3 for programmable nanophotonics.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Zhendong Yan, Lingchen Kong, Chaojun Tang, Juan Deng, Ping Gu, Jing Chen, Xiangxian Wang, Zao Yi, Mingwei Zhu
Summary: This work demonstrates the achievement of ultra-broadband and completely modulated absorption enhancement of monolayer graphene in the near-infrared region. By designing multiple magnetic plasmon resonance modes in metamaterials and adjusting the bias voltage on graphene, the absorption efficiency of monolayer graphene is significantly improved, making it promising for applications in optoelectronic devices.
Article
Engineering, Electrical & Electronic
Utpal Dey, Souvik Agasti, Yizhang Li, Jan Hesselbarth
Summary: This article investigates nonradiating anapole states in isolated, homogeneous, and isotropic dielectric spheres. Theoretical analysis, numerical simulations, and experimental measurements are conducted to explore the practical limitations and potential applications of nonradiating anapole states. The study verifies the electromagnetic signature of anapole states in terms of finite extinction cross section and demonstrates the engineering of electric field hotspots in subwavelength-sized gaps.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Optics
Jinpeng Nong, Fu Feng, Changjun Min, Xiaocong Yuan, Michael Somekh
Summary: In this work, we propose a coupled borophene plasmonic system that can simultaneously excite anisotropic LP and DGP modes with exceptional flexibility in manipulating the optical response. The LP-DGP coupling can be passively adjusted by the spacer thickness and actively modulated by tuning the borophene electron density and incident angle, leading to a transparent window described by a coupled oscillation model.
Article
Computer Science, Information Systems
Xu Yang, Zhen Zhou, Jia Qi, Siqi Zhang, Kangkang Guo, Shoubo Zhao
Summary: This paper introduces a new model for predicting the enhancement factor, delving into the dual enhancement mechanisms of SERS and providing a better understanding of the phenomenon of surface-enhanced Raman scattering.
Article
Nanoscience & Nanotechnology
Yun Xiao, Haibin Wang, Fumiyasu Awai, Naoyuki Shibayama, Takaya Kubo, Hiroshi Segawa
Summary: Oxygen vacancies and zinc interstitial sites are the main factors affecting the performance of solar cells, hindering carrier collection in the cells.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Biochemistry & Molecular Biology
Oganes Ambartsumyan, Dmitry Gribanyov, Vladimir Kukushkin, Alexey Kopylov, Elena Zavyalova
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2020)
Article
Physics, Applied
V. V. Solovyev, S. Schmult, L. Krueckeberg, A. Grosser, T. Mikolajick, I. V. Kukushkin
Summary: UV illumination has been shown to tune the 2D electron density in an ultra-pure GaN/Al0.25Ga0.75N heterojunction from 5.3 x 10^12 cm(-2) to 8.8 x 10^12 cm(-2), resulting in different behaviors in magnetotransport data and photoluminescence spectra. The distributions of electron densities and quantum lifetimes in each individual subband have been independently extracted, revealing an increase in quantum scattering time for electrons in the second subband compared to the ground state.
APPLIED PHYSICS LETTERS
(2021)
Article
Biochemistry & Molecular Biology
Dmitry Gribanyov, Gleb Zhdanov, Andrei Olenin, Georgii Lisichkin, Alexandra Gambaryan, Vladimir Kukushkin, Elena Zavyalova
Summary: The development of sensitive techniques, such as Surface-enhanced Raman spectroscopy (SERS) and DNA aptamers, shows promise for combining rapid specific detection and quantitative determination of viruses, addressing the limitations of existing SERS-based aptasensors.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Dmitry N. Artemyev, Vladimir I. Kukushkin, Sofia T. Avraamova, Nikolay S. Aleksandrov, Yuri A. Kirillov
Summary: Analytical discrimination models of Raman spectra of prostate tissue were constructed using PLS-DA method with different excitation wavelengths, achieving accurate differentiation between prostate cancer and hyperplasia sites, with calibration dataset accuracy reaching 100%. The study confirmed key features of cellular metabolism in malignant prostate tumors and explored the potential of optical spectroscopy methods for prostate cancer differential diagnosis.
Article
Chemistry, Multidisciplinary
Elena Zavyalova, Oganes Ambartsumyan, Gleb Zhdanov, Dmitry Gribanyov, Vladimir Gushchin, Artem Tkachuk, Elena Rudakova, Maria Nikiforova, Nadezhda Kuznetsova, Liubov Popova, Bakhtiyar Verdiev, Artem Alatyrev, Elena Burtseva, Anna Ignatieva, Anna Iliukhina, Inna Dolzhikova, Alexander Arutyunyan, Alexandra Gambaryan, Vladimir Kukushkin
Summary: This paper presents a SERS-aptasensor based on colloidal solutions for rapid and specific quantitative determination of the SARS-CoV-2 virus, distinguishing it from other respiratory viruses. Existing SERS-based aptasensors for virus detection often lack quantification or are complex and costly in their design and implementation.
Article
Physics, Applied
Dmitrii A. Gromyko, Sergey A. Dyakov, Nikolay A. Gippius, Thomas Weiss, Sergei G. Tikhodeev, Anna S. Astrakhantseva, Yana Fedotova, Victor V. Solovyev, Igor Kukushkin
Summary: The height dependence of Raman light scattering on organic molecules deposited onto thick one-dimensional metal-dielectric gratings is investigated. Oscillations of the Raman light scattering intensity as a function of the height of the metastructure's strips are observed, and it is demonstrated that these oscillations are associated with a type of Fabry-Perot effect. It is shown that the intensity of surface-enhanced Raman scattering can be further increased by local field enhancement due to coupling of the surface plasmon polaritons on the top and bottom metal parts of the gratings.
PHYSICAL REVIEW APPLIED
(2022)
Article
Chemistry, Analytical
Elena Zavyalova, Daria Tikhonova, Gleb Zhdanov, Elena Rudakova, Vera Alferova, Andrey Moiseenko, Polina Kamzeeva, Alexei Khrulev, Arthur Zalevsky, Alexander Arutyunyan, Roman Novikov, Vladimir Kukushkin, Andrey Aralov
Summary: Phosphorylated adenosine derivatives play important roles in the energetic balance of the cell, biosynthesis of cell components, and regulation of protein activity. Surface-enhanced Raman spectroscopy (SERS) is an optical method that can provide a unique spectrum of a substance at low concentrations. By using nucleic acid aptamers and Raman-active dyes, the specificity and limit of detection of SERS-based sensors can be significantly increased. In this study, a biosensor based on the AMP-dependent interaction between a DNA aptamer and a novel Raman-active dye was described, showing a low limit of detection and a wide dynamic range.
ANALYTICA CHIMICA ACTA
(2022)
Article
Physics, Applied
A. V. Shchepetilnikov, A. R. Khisameeva, V. V. Solovyev, A. Grosser, T. Mikolajick, S. Schmult, I. V. Kukushkin
Summary: This study extensively investigates the fundamental aspects of spin-orbit interaction in commercially relevant GaN/AlxGa1-xN heterostructures hosting two-dimensional electron systems using electron spin resonance (ESR). It accurately measures the electron g-factor and extracts the Rashba spin-orbit interaction constant alpha in various GaN/AlxGa1-xN heterojunctions. The experimental findings are confirmed by theoretical calculations and weak antilocalization measurements, providing knowledge for estimating the true scales of spin-orbit interaction in GaN-based spintronic devices.
PHYSICAL REVIEW APPLIED
(2022)
Article
Chemistry, Multidisciplinary
Gleb Zhdanov, Ekaterina Nyhrikova, Nadezda Meshcheryakova, Olga Kristavchuk, Assel Akhmetova, Evgeny Andreev, Elena Rudakova, Alexandra Gambaryan, Igor Yaminsky, Andrey Aralov, Vladimir Kukushkin, Elena Zavyalova
Summary: Biosensors combining the ultrahigh sensitivity of surface-enhanced Raman scattering (SERS) and the specificity of nucleic acid aptamers have recently drawn attention in the detection of respiratory viruses. Here, a novel design of SERS-based aptasensor with a detection limit close to RT-PCR sensitivity is proposed. The sensor utilizes silver nanoparticles and a unique Raman-active dye to detect influenza viruses.
FRONTIERS IN CHEMISTRY
(2022)
Article
Physics, Multidisciplinary
V. Kukushkin, V. E. Kirpichev, E. N. Morozova, A. S. Astrakhantseva, V. V. Solov'ev, I. Kukushkin
Summary: This study investigates the dependence of the intensities of Stokes and anti-Stokes scattering components on pump power in plasmon-dielectric structures optimized for giant enhancement of Raman scattering (SERS) in the infrared spectral range. The results show that the intensity of the anti-Stokes scattering increases superlinearly with pump power, with a faster increase above a certain threshold power. In contrast, the Stokes scattering intensity is a linear function at low pump powers and a sublinear function at high pump powers. The threshold power is found to depend on the concentration of organic molecules and the SERS enhancement factor. The observed behavior suggests the importance of stimulated light scattering mechanism in SERS structures. Analysis of the spectral positions of scattering lines indicates that molecules are excited to high vibrational energy levels under above-threshold laser excitation, leading to the redshift of anti-Stokes scattering lines.
Article
Biotechnology & Applied Microbiology
Vladimir Kukushkin, Olga Kristavchuk, Evgeny Andreev, Nadezda Meshcheryakova, Olga Zaborova, Alexandra Gambaryan, Alexander Nechaev, Elena Zavyalova
Summary: Aptasensors based on surface-enhanced Raman spectroscopy (SERS) are highly desirable due to their superior specificity and low limit of detection. In this study, we developed a method that combines membrane filtration and SERS-active substrates for efficient adsorption of viruses. The specific determination of viruses was achieved using aptamers labeled with Raman-active probes.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Vladimir Kukushkin, Oganes Ambartsumyan, Alexei Subekin, Anna Astrakhantseva, Vladimir Gushchin, Alexandra Nikonova, Anastasia Dorofeeva, Vitaly Zverev, Anna Keshek, Nadezda Meshcheryakova, Olga Zaborova, Alexandra Gambaryan, Elena Zavyalova
Summary: In light of recurring epidemics and pandemics, rapid and reliable virus identification techniques are needed. Polymerase chain reaction with reverse transcription is a reliable and sensitive, though not rapid, tool. The antibody-based strip is a rapid, though not reliable, and sensitive tool. Alternative tools are being developed to meet all the customer's needs, such as surface-enhanced Raman spectroscopy (SERS) which allows single molecule detection in minutes. A multiplex lithographic SERS aptasensor was developed to detect several respiratory viruses in one pot within 17 min by using labeled aptamers anchored onto metal surfaces.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Alexei Subekin, Rugiya Alieva, Vladimir Kukushkin, Ilya Oleynikov, Elena Zavyalova
Summary: Surface-enhanced Raman scattering (SERS) is a powerful technique for the detection of analytes. In this paper, a SERS-based sensor was proposed for the rapid and sensitive detection of botulinum toxin type A using a functionalized silver nanoisland substrate. The proposed sensor architecture allows for one-stage detection without additional staining, with a limit of detection of 2.4 ng/mL.
Article
Engineering, Electrical & Electronic
Luisa Krueckeberg, Steffen Wirth, Victor V. Solovyev, Andreas Grosser, Igor V. Kukushkin, Thomas Mikolajick, Stefan Schmult
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2020)
