Review
Chemistry, Inorganic & Nuclear
Miae Won, Mingle Li, Hyeong Seok Kim, Pai Liu, Seyoung Koo, Subin Son, Jae Hong Seo, Jong Seung Kim
Summary: Fluorescence imaging is a crucial optical technique for visualizing dynamic biological processes using light signals from molecules, cells, and living organisms. Recent breakthroughs have increased opportunities to generate multifunctional fluorescence probes for highly accurate diagnosis of early-stage cancers. The article reviews recent advances in small molecule-based fluorescence probes and their design principles, while highlighting current challenges and opportunities in the field.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Biotechnology & Applied Microbiology
Valentina Di Meo, Massimo Moccia, Gennaro Sanita, Alessio Crescitelli, Annalisa Lamberti, Vincenzo Galdi, Ivo Rendina, Emanuela Esposito
Summary: The research proposes and demonstrates a sensing platform based on plasmonic metasurfaces for detecting very low concentrations of DNA fragments. By utilizing multispectral metasurfaces, the platform enables surface-enhanced infrared absorption spectroscopy for univocal and label-free recognition of specific molecules.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Chemistry, Physical
Noor E. Karishma Shaik, Bryce Widdicombe, Dechuan Sun, Sam E. E. John, Dongryeol Ryu, Ampalavanapillai Nirmalathas, Ranjith R. R. Unnithan
Summary: A multispectral camera records image data in various wavelengths to capture additional information. While multispectral imaging in visible wavelengths has gained popularity, it is still an emerging area in longwave infrared (LWIR) due to material and technology limitations. LWIR multispectral cameras can capture emission spectra for various applications. In this work, we demonstrate an LWIR multispectral image sensor using an aluminum-based plasmonic filter array in germanium. The prototype device is calibrated and the multispectral images are reconstructed using deep learning methods.
Article
Chemistry, Multidisciplinary
Kuo Chu Hwang, Payal Banerjee, Munusamy Shanmugam
Summary: This passage introduces a novel photocatalyst, LaB6, which can absorb light to split water and decompose organic pollutants, as well as kill multidrug-resistant Escherichia coli bacteria. It can function during both daytime and nighttime by utilizing mid-IR light that is readily available from natural environments.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chencheng Shen, Xianglong Cai, Tiancheng Zheng, Yuxi Jia, Dong Liu, Jinbo Liu, Jingwei Guo
Summary: This study demonstrated the application of mid-infrared lasers in free space, generating stimulated Raman scattering lasers using mixed gases of hydrogen and deuterium to reduce the threshold of mid-IR laser generation and achieve high power output. Multiple spectral mid-IR Raman lasers were also generated, showcasing the potential of this convenient method.
APPLIED SCIENCES-BASEL
(2021)
Article
Optics
Xiaoqiang Ban, Ming Zhong, Brent E. Little
Summary: The study investigated the light absorption modulation effect of a hybrid plasmonic graphene waveguide modulator, achieving a modulation depth of 3 dB and a wider modulation bandwidth through parameter optimization. The proposed modulator also demonstrated lower power consumption and better performance in potential applications.
Article
Physics, Applied
Michael Barrow, Jamie Phillips
Summary: The high-Q resonances observed in subwavelength gratings have various applications and can be integrated with active devices, opening new possibilities for microscale optical systems.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Chia-Chien Huang, Ruei-Jan Chang, Ching-Wen Cheng
Summary: This study proposed a waveguide structure consisting of multilayer graphene metamaterials, which support ultralow loss and long propagation lengths, suitable for building high-density photonic integrated circuits.
Article
Chemistry, Multidisciplinary
Parviz Saeidi, Bernhard Jakoby, Gerald Puhringer, Andreas Tortschanoff, Gerald Stocker, Jasmin Spettel, Florian Dubois, Thomas Grille, Reyhaneh Jannesari
Summary: This work investigates the optimization of a plasmonic slot waveguide (PSWG) in the mid-IR region, with a focus on a representative wavelength of 4.26 μm, which is the absorption line of CO2. The study analyzes the mode features of different structures and optimizes the PSWG based on a figure of merit (FOM) that considers confinement factor and propagation length. Attractive wavelengths and geometries that maximize the FOM are also identified for other wavelengths.
Article
Chemistry, Analytical
Parviz Saeidi, Bernhard Jakoby, Gerald Puhringer, Andreas Tortschanoff, Gerald Stocker, Florian Dubois, Jasmin Spettel, Thomas Grille, Reyhaneh Jannesari
Summary: Plasmonic slot waveguides offer high light confinement but suffer from significant propagation loss due to the presence of metal. Balancing the trade-off between confinement factor and propagation length is essential for optimizing waveguide geometries.
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)
Article
Chemistry, Multidisciplinary
Nestor Bareza, Ewelina Wajs, Bruno Paulillo, Antti Tullila, Hannakaisa Jaatinen, Roberto Milani, Camilla Dore, Agustin Mihi, Tarja K. Nevanen, Valerio Pruneri
Summary: This article introduces a quantitative bioassay based on the modulation of mid-IR localized surface plasmon resonance (LSPR) in modified graphene nanostructures. The ability to quantify different concentrations of vitamin B-12 using graphene LSPR shifts is demonstrated, and the scalability potential of nanoimprinted large area nanostructured graphene films is illustrated.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Jiajun Meng, Jasper J. Cadusch, Kenneth B. Crozier
Summary: Infrared absorption spectroscopy is widely used in chemical detection, with FTIR spectrometer being the main instrument, but there is a need for smaller, lightweight and low-cost infrared microspectrometers. A study on a microspectrometer chemical classifier shows promising performance in identifying various chemicals.
Article
Engineering, Electrical & Electronic
Benjamin J. Russell, Jiajun Meng, Kenneth B. Crozier
Summary: Mid-infrared spectroscopy enables nondestructive and real-time chemical identification. To meet the demand for in situ sensing, novel sensing technologies have been developed that minimize size, weight, power, and cost. These technologies include mid-IR microspectrometers that interface a detector array with an array of discrete spectral filters. The study explores the use of all-dielectric, single-layer, coupled waveguide-grating structures as filters in a filter-array detector-array spectrometer, and predicts accurate classification of common acyclic hydrocarbons and detection of single-gas down to low concentrations.
IEEE SENSORS JOURNAL
(2023)
Article
Computer Science, Information Systems
Yueying Cui, Zhouyu Tong, Xinlei Zhang, Wenhui Wang, Weiwei Zhao, Yuanfang Yu, Xiaodong Pi, Jialin Zhang, Zhenhua Ni
Summary: Highly sensitive photodetectors operating at mid-infrared wavelengths are urgently needed for various applications. In this study, a high-sensitivity boron-doped silicon quantum dot/ HgCdTe photodetector is demonstrated by integrating localized surface plasmon resonance. The hybrid photodetector exhibits high specific detectivity and a high-speed response at room temperature, as well as high-performance spectral blackbody detection under a cryogenic environment. The plasmonic material-integrated architecture paves the way for developing high-performance mid-infrared photodetection.
SCIENCE CHINA-INFORMATION SCIENCES
(2023)
