Article
Chemistry, Physical
Inyong Hwang, Mingyun Kim, Jaeyeon Yu, Jihye Lee, Jun-Hyuk Choi, Su A. Park, Won Seok Chang, Jongwon Lee, Joo-Yun Jung
Summary: SEIRA spectroscopy utilizes near-field effects in nanostructures for highly sensitive detection, with a 10 nm thick MA achieving a record-high reflection difference SEIRA signal in experiments. MAs can be mass-produced through nanoimprint lithography and dry etching, offering a promising technological pathway for sensing and detection applications.
Article
Chemistry, Multidisciplinary
Sihai Luo, Andrea Mancini, Feng Wang, Junyang Liu, Stefan A. Maier, John C. de Mello
Summary: This paper presents a high-throughput method for fabricating large-area arrays of triangular nanogaps with precise control over the gap size, which can significantly enhance the surface-enhanced Raman spectroscopy (SERS) detection. The method has important implications for practical applications.
Article
Chemistry, Multidisciplinary
Xianglong Miao, Ting Shan Luk, Peter Q. Liu
Summary: Surface-enhanced infrared absorption (SEIRA) spectroscopy is a label-free and nondestructive method for detecting and identifying analytes with high sensitivity and specificity. This study demonstrates high-performance nanophotonic SEIRA sensors based on nanopatch antennas with a liquid gallium ground plane, which show ultrahigh field confinement and enhancement, and allow for convenient and efficient delivery of analytes into nanometric hot spots.
ADVANCED MATERIALS
(2022)
Article
Optics
Jiaxu Huang, Kang Xu, Shaolin Xu, Xiaowei Li, Qi-Huo Wei
Summary: A robust approach is proposed to obtain controllable nanostructures with long-range order based on the half-periodic mismatched optical enhancement (h-MOE) effect. The new laser nanopatterning approach demonstrates controllable patterning ability to theoretically infinitely large-area super-straight gratings, orientation-controllable gratings, and half-periodic mismatched nanohole arrays.
LASER & PHOTONICS REVIEWS
(2022)
Article
Chemistry, Physical
Chengyun Zhang, Yuyang Wang, Xiaohu Mi, Dazhong Wang, Huan Chen, Jinping Li, Zhengkun Fu, Zhenglong Zhang
Summary: In this study, horizontally aligned gold nanorod arrays with self-contained spacer and polarization-dependent plasmonic properties were prepared on silicon wafer substrates using a self-assembly method. The enhancement of upconversion luminescence of rare earth ions doped nanoparticles (NaYF4: Yb3+, Er3+) was investigated. Results showed that the luminescence intensity of the nanoparticles was greatly enhanced when the horizontally aligned gold nanorod arrays were used as a substrate. The self-contained spacer effectively prevented quenching of the luminescence and the arrays exhibited excellent optical polarization anisotropy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Melissa Najem, Franck Carcenac, Thierry Taliercio, Fernando Gonzalez-Posada
Summary: Plasmonic nanoantennas have great potential for biosensing applications, providing real-time detection and identification of molecular bio-information. This article presents a barcode-like nanostructured surface based on a metal-insulator-metal platform, which exhibits tunable localized surface resonances. The fabrication and optical characterization of periodic arrays of aluminum bowties within the MIM structure, as well as the investigation of surface-enhanced infrared absorption, are reported.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Physical
Roman Zvagelsky, Dmytro Chubich, Anastasia Pisarenko, Zakhar Bedran, Elena Zhukova
Summary: The SEIRA study of the widely used organic optoelectronic material Alq(3) was demonstrated using a specialized design of gold Y-shaped nanoantenna arrays. The near-field enhancement effects were observed, showing saturation and signal reduction with increasing analyte layer thickness. This research opens up possibilities for further progress in spectroscopic chemical imaging in optoelectronics, particularly for organic electronic devices with multiple layers of transport materials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Guangyan Huang, Kaizhen Liu, Guangyi Shi, Qianqian Guo, Xiang Li, Zeke Liu, Wanli Ma, Tao Wang
Summary: Plasmonic nanocavities have the ability to concentrate light, but at small cavity sizes, quenching occurs due to quantum mechanical effects. However, our study shows that quantum effects can enhance the absorption of molecules, thereby increasing the sensitivity of nanocavities.
Review
Instruments & Instrumentation
Donglai An, Fangyuan Sun, Yupei Bian, Jing Ni, Qi Jie Wang, Xia Yu
Summary: Mid-infrared absorption spectroscopy is a powerful tool for measuring and analyzing the composition, concentration, and structure of substance molecules. It is widely used in the biomedical field for noninvasive, label-free, and real-time analysis and diagnosis. This study reviews various enhancement technologies for mid-infrared absorption spectroscopy and their applications in breath analysis, body fluid detection, protein structure and conformational transition, and food and drug quality monitoring.
APPLIED SPECTROSCOPY REVIEWS
(2022)
Article
Biochemistry & Molecular Biology
Homan Kang, Sinyoung Jeong, Jin-Kyoung Yang, Ahla Jo, Hyunmi Lee, Eun Hae Heo, Dae Hong Jeong, Bong-Hyun Jun, Hyejin Chang, Yoon-Sik Lee
Summary: This study presents a template-assisted method for synthesizing nanogap shell structures for biomolecular detections based on surface-enhanced Raman scattering. The fabricated silver nanogap shells (Ag NGSs) showed high enhancement factor and good signal uniformity, enabling multiplex biomolecular detection and imaging. The research demonstrates the potential of highly sensitive Ag NGS nanoprobes for point-of-care diagnostics and appropriate treatment options.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Analytical
Hao Wu, Yangxi Zhang, Zhi-Zheng Wang, A. Ping Zhang
Summary: Infrared absorption-spectroscopy (IRAS) is a useful tool for identifying and characterizing molecular species. Plasmonic substrates have greatly enhanced the performance of IRAS technology for high-sensitivity biochemical detection, but their fabrication is still challenging and costly. This study presents a precision photoreduction and replacement reaction combined technology to directly print plasmonic substrates for PEIRAS biodetection. Experimental results show that the printed plasmonic substrate can detect bovine serum albumin at a concentration level of 10 nM, indicating its promising application in IRAS biodetection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Nanoscience & Nanotechnology
Qi Wang, Yu Zheng, Changjian Zhou, Mansun Chan, Cary Y. Yang
Summary: The use of VACNT arrays as absorbers for thermal-type photodetectors shows promise, but requires optimization of height, density, and growth temperature to achieve high absorption rate and response speed. A low-temperature plasma enhanced chemical vapor deposition process was used to prepare various VACNT arrays, with experimental and theoretical investigations paving the way for future integration with infrared photodetectors.
Article
Chemistry, Multidisciplinary
Muhammad Waqas Shabbir, Michael N. Leuenberger
Summary: This paper introduces a spectrally selective infrared (IR) photodetector based on nanopatterned multilayer graphene intercalated with FeCl3. By utilizing localized surface plasmons (LSPs) and an optical cavity, the absorption rate is significantly increased, resulting in ultrafast response time and high detectivity through the photothermoelectric effect.
Article
Biotechnology & Applied Microbiology
Sihai Luo, Junjie Zhang, John C. de Mello
Summary: This study demonstrates the use of thin gold films patterned with nanogaps for the sensitive detection of micro- and nano-plastics. The detection and identification of these contaminants is critical for monitoring their spread and effects in the environment.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Niclas S. Mueller, Emanuel Pfitzner, Yu Okamura, Georgy Gordeev, Patryk Kusch, Holger Lange, Joachim Heberle, Florian Schulz, Stephanie Reich
Summary: Research shows that plasmonic supercrystals, with a high density of hotspots, are an excellent platform for enhancing vibrational spectra by increasing the cross section of Raman scattering and infrared absorption. The study demonstrates that the intensity of surface-enhanced Raman scattering inside the crystal is uniform and predictable, with supercrystal polaritons inducing resonances in the enhanced cross section for both Raman scattering and infrared absorption. The enhancement of infrared absorption within supercrystals is attributed to the combined effects of hotspot formation and the excitation of standing polariton waves.
Article
Chemistry, Physical
Charlotte I. Evans, Douglas Natelson
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Multidisciplinary
Jiangtan Yuan, Andrew Balk, Hua Guo, Qiyi Fang, Sahil Patel, Xuanhan Zhao, Tanguy Terlier, Douglas Natelson, Scott Crooker, Jun Lou
Article
Physics, Applied
Loah A. Stevens, Tingxin Li, Rui-Rui Du, Douglas Natelson
APPLIED PHYSICS LETTERS
(2019)
Article
Multidisciplinary Sciences
Panpan Zhou, Liyang Chen, Yue Liu, Ilya Sochnikov, Anthony T. Bollinger, Myung-Geun Han, Yimei Zhu, Xi He, Ivan Bozovic, Douglas Natelson
Article
Nanoscience & Nanotechnology
Xuanhan Zhao, Panpan Zhou, Liyang Chen, Kenji Watanabe, Takashi Taniguchi, Douglas Natelson
Article
Chemistry, Multidisciplinary
Longji Cui, Yunxuan Zhu, Mahdiyeh Abbasi, Arash Ahmadivand, Burak Gerislioglu, Peter Nordlander, Douglas Natelson
Article
Multidisciplinary Sciences
Charlotte Evans, Rui Yang, Lucia T. Gan, Mahdiyeh Abbasi, Xifan Wang, Rachel Traylor, Jonathan A. Fan, Douglas Natelson
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Nanoscience & Nanotechnology
Liyang Chen, Panpan Zhou, Yoav Kalcheim, Ivan K. Schuller, Douglas Natelson
Article
Chemistry, Multidisciplinary
Mahdiyeh Abbasi, Charlotte Evans, Liyang Chen, Douglas Natelson
Article
Physics, Applied
Yunxuan Zhu, Longji Cui, Douglas Natelson
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Physics, Condensed Matter
Yunxuan Zhu, Douglas Natelson, Longji Cui
Summary: Experimental investigation of vibrational pumping and light emission processes in molecular junctions driven by electrical bias or optical power reveals distinct features in heating of vibrational modes, and discusses the hot carrier origin of broadband continuum emission observed in Raman scattering spectrum.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Chemistry, Multidisciplinary
Longji Cui, Yunxuan Zhu, Peter Nordlander, Massimiliano Di Ventra, Douglas Natelson
Summary: By using plasmonic tunnel junctions as a platform, a much greater plasmonic light emission can be achieved under combined electrooptical excitation. The observed spectra suggest interactions of plasmon-induced hot carriers and electronic anti-Stokes Raman scattering as possible mechanisms for the enhanced emission.
Article
Chemistry, Physical
Charlotte Evans, Lucia T. Gan, Rui Yang, Mahdiyeh Abbasi, Xifan Wang, Rachel Traylor, Jonathan A. Fan, Douglas Natelson
Summary: This study demonstrates that the photothermoelectric effect can be utilized to detect low-concentration platinum gradients in wire-shaped gold nanostructures with high sensitivity. Even a small variation in platinum concentration along a 1 μm length of gold wire can significantly impact the local Seebeck coefficient. These findings suggest that the photothermoelectric effect is a highly sensitive tool for detecting low-level impurity concentrations in host metals in a wire geometry.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Panpan Zhou, Liyang Chen, Ilya Sochnikov, Tsz Chun Wu, Matthew S. Foster, Anthony T. Bollinger, Xi He, Ivan Bozovic, Douglas Natelson
Proceedings Paper
Nanoscience & Nanotechnology
Douglas Natelson, Charlotte Evans, Pavlo Zolotavin
QUANTUM SENSING AND NANO ELECTRONICS AND PHOTONICS XV
(2018)