Article
Chemistry, Multidisciplinary
Lei Ouyang, Tobias Meyer-Zedler, Kel-Meng See, Wei-Liang Chen, Fan-Cheng Lin, Denis Akimov, Sadaf Ehtesabi, Martin Richter, Michael Schmitt, Yu-Ming Chang, Stefanie Grafe, Jurgen Popp, Jer-Shing Huang
Summary: This study investigates the enhancement effect of plasmonic gratings in nonlinear surface-enhanced coherent anti-Stokes Raman scattering (SECARS) using the platform of plasmonic Doppler grating (PDG). The PDGs spatially separate the input and output enhancement, allowing for observation and comparison of overall enhancement from different combinations of individual input and output beams. The results indicate that enhancement in the pump and anti-Stokes beams plays a more critical role in the overall enhancement than that in the Stokes beam.
Article
Multidisciplinary Sciences
Saqib Jamil, Waqas Farooq, Najeeb Ullah, Adnan Daud Khan, Usman Khan Khalil, Amir Mosavi
Summary: This paper theoretically demonstrates the use of a plasmonic coupled elliptical nanostructure to achieve a high-intensity spaser or nanolaser. By altering the geometry, the structure can support strong coupled resonance modes and amplify the localized surface plasmon resonance (LSPR) peaks and the local field intensity. The study has important implications for sensing applications and surface-enhanced Raman spectroscopy.
Article
Chemistry, Multidisciplinary
Gytaute Sirgedaite, Martynas Talaikis, Gediminas Niaura, Lina Mikoliunaite
Summary: Surface enhanced Raman spectroscopy (SERS) is enhanced by the introduction of magnetic nanoparticles and plasmonic silver or gold nanoparticles. In this work, modification of magnetite with different chemicals and subsequent decoration with PEI were performed to improve the attachment of plasmonic nanoparticles. The order of decoration was found to affect the signal enhancement, and composites with silver, gold, and magnetite nanoparticles were obtained.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Siyu Chen, Pan Li, Chi Zhang, Wenkai Wu, Guoliang Zhou, Changjin Zhang, Shirui Weng, Tao Ding, De-Yin Wu, Liangbao Yang
Summary: Fabricating ultrasmall nanogaps for significant electromagnetic enhancement is a long-standing goal of SERS research. The quantum plasmonics limits the electromagnetic enhancement when the gap size decreases below the quantum tunneling regime. In this study, by sandwiching hexagonal boron nitride (h-BN) as a gap spacer in a NPoM structure, electron tunneling is effectively blocked, leading to layer-dependent SERS enhancement.
Article
Chemistry, Multidisciplinary
Yuhao Xu, Huatian Hu, Wen Chen, Pengfei Suo, Yuan Zhang, Shunping Zhang, Hongxing Xu
Summary: This study demonstrates the selective control of nonlinear surface-enhanced Raman scattering (SERS) enhancement in a phononic cavity optomechanical system by tuning the laser-plasmon detuning. The phononic nanodevice shows distinctive properties compared to the molecular system.
Review
Chemistry, Analytical
Shashank K. Gahlaut, Anisha Pathak, Banshi D. Gupta
Summary: This review highlights the recent developments in silver nanostructured substrates for plasmonic sensing, with a focus on surface plasmon resonance (SPR) and surface-enhanced Raman spectroscopy (SERS). The synthesis methods of silver nanostructured substrates and their applications in various sensing regimes are discussed. Recent literature on silver nanostructures prepared through physical vapor deposition and chemical synthesis routes is critically reviewed for different types of substrates.
Article
Chemistry, Multidisciplinary
Feifan Li, Xinyang Mu, Xueqing Tang, Ge Song, Hongzhao Sun, Xiuling Zha, Peiyan Sun, Jianhui Fang, Dongmei Hu, Shan Cong, Zhigang Zhao
Summary: Non-metallic materials have unique advantages over metal materials as active substrates for surface-enhanced Raman scattering (SERS). However, the Raman enhancement achieved with non-metallic materials is considerably lower due to their inefficient interaction with the incident wavelength. In this study, colourful semiconductor-based SERS substrates are proposed for the first time by utilizing a Fabry-Perot cavity, which allows for manipulating light. By finely adjusting the absorption frequency and intensity, resonant absorption can be achieved with various non-metal SERS substrates, leading to a sensitivity enhancement of approximately 100 times.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Biochemistry & Molecular Biology
Aleksandra Michalowska, Andrzej Kudelski
Summary: The study introduces a novel magnetic-silver plasmonic nanomaterial that can be manipulated using a magnetic field and applied in Raman spectroscopy. By creating nanoresonators on silver plasmonic structures, the intensity of electromagnetic radiation can be enhanced across a wider frequency range.
Article
Chemistry, Analytical
Yang Meng, Yanan Zhang, Jiaxin Liu, Liping Zhao, Qingjia Ren, Fei Wang, Caolong Li
Summary: To address the limitations of traditional diagnostic methods for Pheochromocytoma (PCC), a dual-targeting Surface-Enhancement Raman Scattering (SERS) cytosensor was developed to identify and detect PCC-CTCs from peripheral blood. The SERS signal export was achieved using Meta-iodobenzylguanidine (MIBG) and octreotide-2,2 ',2 '',2'-(1,4,7,10 -tetraazacyclo-dodecane-1,4,7,10-tetrayl) tetraacetic acid (DOTA) functionalized magnetic Fe3O4 and Ag-DTNB as capture probe and signal probe, respectively. The use of Ag nanocubes (AgNCs) as Raman active substrate enhanced the signal intensity of DTNB, enabling trace analyte detection. This study provided new insights into the accurate detection of PCC-CTCs.
ANALYTICA CHIMICA ACTA
(2023)
Article
Chemistry, Physical
Wei Zhang, Tianxing Zheng, Bin Ai, Panpan Gu, Yuduo Guan, Yu Wang, Zhiyuan Zhao, Gang Zhang
Summary: Au-P-Au-coupled gold nanoparticle platforms with multiple nanogaps were fabricated using nanoskiving and polymer-assisted assembly. The platform showed strong electric field enhancement due to the confinement of incident light, leading to significant surface-enhanced Raman scattering performance and sensitive detection of glucose.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Jeongwon Kim, Sungwoo Lee, Jiwoong Son, Jieun Kim, Hajir Hilal, Minsun Park, Insub Jung, Jwa-Min Nam, Sungho Park
Summary: Rational design of plasmonic colloidal assemblies via bottom-up synthesis is challenging but can demonstrate unprecedented optical properties that are strongly related to the shape and spatial arrangement of the assembly. In this study, plasmonic cyclic Au nanosphere hexamers (PCHs) were successfully synthesized and showed excellent performance in single-particle surface-enhanced Raman scattering signals.
Review
Biochemistry & Molecular Biology
Antonio Sasso, Angela Capaccio, Giulia Rusciano
Summary: This review focuses on the recent studies conducted by our group in the past decade, where novel nanofabrication techniques were successfully applied to SERS and TERS experiments for studying bio-systems and molecular species of environmental interest.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Swapnil Singh, Aishwarya Agarwal, Anamika Avni, Samrat Mukhopadhyay
Summary: The study demonstrates that electrostatic tethering between surface-modified negatively charged silver nanoparticles and highly positively charged intrinsically disordered N-terminal domain of the prion protein enables highly sensitive protein detection at low concentrations. This novel approach provides a potent and reproducible method for characterizing proteins at nanomolar concentrations.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Ora Bitton, Satyendra Nath Gupta, Yong Cao, Alexander Vaskevich, Lothar Houben, Tamar Yelin, Gilad Haran
Summary: The study focused on the impact of the adhesion layer used in the fabrication of metal nanostructures on the spectral linewidths of plasmonic cavities. It was found that reducing the thickness of the adhesion layer could decrease the linewidths of both bright and dark plasmonic modes, leading to an increase in the quality factor of the PCs and facilitating strong-coupling with semiconductor quantum dots.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
C. Y. Yu, C. K. Chung
Summary: In this study, a new SERS substrate based on irregular nanopore anodic aluminum oxide with platinum-metal-film coating was proposed. The SERS mechanism was explained by the peripheral plasmonic mechanism of the substrate. Experimental results showed that the substrate achieved high enhancement factor and low limit of detection for detecting pollutants and sanitizing water.
APPLIED SURFACE SCIENCE
(2022)
