Article
Chemistry, Physical
Igor Carvalho, Renata Xavier, Fabiana Fim, Cleumar Moreira, Rossana Santa Cruz
Summary: Graphene, molybdenum disulfide (MoS2), and zinc oxide (ZnO) are proposed as enhancers for the evanescent field of an optical fiber surface plasmon resonance (SPR) sensor, with gold and silver as the plasmonic materials and polymethylmethacrylate (PMMA) as the fiber core material. The results show higher sensitivity, figure of merit, and FWHM compared to conventional SPR sensors. Graphene increases sensitivity, MoS2 enhances interaction with bio-recognition molecules, and ZnO improves sensitivity the most in a silver-based sensor. Graphene-based silver SPR exhibits the highest figure of merit values.
Article
Engineering, Electrical & Electronic
Yusuf Dogan, Ilhan Erdogan
Summary: This study presents a numerical simulation of a D-shaped fiber optic SPR sensor with a multilayer coated structure, which demonstrates higher sensitivity and superior performance compared to traditional SPR sensors. The proposed sensor has great potential for applications in the fields of chemistry, biochemistry, and other related areas.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Physical
Xiaofeng Shen, Ye Yang, Bingtao Song, Fan Chen, Qingquan Xue, Shengdao Shan, Shijie Li
Summary: In this study, a easily recyclable and efficient plasmonic photocatalyst was developed by in-situ growth of plasmonic bismuth combined with magnetic ferroferric nanoparticles on biochar through high temperature calcination. The catalyst exhibited broad photoabsorption and efficient separation of photogenerated carriers, showing excellent removal performance for Cr(VI).
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Cheolmin Park, Seung Hun Han, Hyeok Jun Jin, Woonggi Hong, Sung-Yool Choi
Summary: In order to solve the image deterioration caused by the pixel miniaturization in high-resolution CMOS image sensor technology, a photodiode with an enhanced mechanism based on a distinctive device structure is needed. This study introduced a photodiode consisting of gold nanoparticles/monolayer graphene/n-type trilayer MoS2/p-type Si bulk, which achieved ultrafast rising/falling times due to the narrow depletion width resulting from the 2D/3D heterojunction. To compensate for the expected low absorbance, plasmonic gold nanoparticles on monolayer graphene were introduced, resulting in broadband enhanced EQE.
Article
Chemistry, Multidisciplinary
Jie Chen, Ruhui Hu, Han Zhu, Yindian Wang, Zhihui Mao, JunJie Hu, Xiaojun Hu, Hongxia Chen
Summary: The supramolecule calix[4]arene modified MoS2 NSs demonstrated enhanced sensitivity in surface plasmon resonance sensors, presenting a promising application for immunosensing of cancer biomarkers.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2021)
Article
Chemistry, Physical
Min-Wen Yu, Satoshi Ishii, Shisheng Li, Chih-Jen Ku, Shiuan-Yeh Chen, Tadaaki Nagao, Kuo-Ping Chen
Summary: In this study, the enhancement of Raman signals through plasmon-exciton coupling is reported, instead of SERS enhancement at the excitation wavelength.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Analytical
Haizhou Zheng, Jiayang Yang, Qi Wang, Bin Feng, Ruifeng An
Summary: A new gold film-molybdenum disulfide (MoS2)-hexagonal boron nitride (h-BN) three-layer sensing structure is reported, which enhances the sensitivity of the sensor by utilizing the properties of the materials. The prepared sensor shows significantly improved performance and has the advantages of a simple structure, low cost, high accuracy, and favorable specificity.
INSTRUMENTATION SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Kewang Zhang, Cheng Wang, Siyu Guo, Shujin Li, Zhengying Wu, Shinichi Hata, Jie Li, Yukihide Shiraishi, Yukou Du
Summary: This study successfully prepared trimetallic PdAgCu nanospheres with abundant surface bulges for ethylene glycol oxidation reaction and compared them with bimetallic PdAg nanospheres to investigate the performance enhancement mechanism. The optimized PdAgCu nanospheres exhibited superb mass activity and electrochemical stability. The incorporation of Cu into PdAg nanospheres further enhanced the photoelectrocatalytic performance and increased noble metal atom utilization.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Devi Taufiq Nurrohman, Nan-Fu Chiu
Summary: The surface plasmon resonance (SPR) biosensor is a powerful analytical tool for investigating biomolecular interactions, and graphene has been widely studied as a material to increase the sensor's sensitivity through various excitation methods. Current development of graphene-based SPR biosensor includes discussion on graphene properties, its application in biosensors, simulation, and experimental results of different excitation methods. Additionally, a review on graphene-based Surface-Enhanced Raman Scattering (SERS) biosensor expands the discussion on SPR biosensors, providing an overview of future material development in biosensors.
Article
Optics
Li -Yuan Wang, Cheng-Bao Yao, Xue Wang, Ze-Miao Wang, Cai-Hong Jiang, Hai -Tao Yin
Summary: In this research, strain and interface engineering of metal-decorated two-dimensional transition metal dichalcogenides (TMDs) were presented. The effects of strong random scattering on the transport and electron localization of molybdenum disulfide (MoS2) were experimentally investigated. The study also explored the charge transfer mechanism and optical absorption regulation in TMDs.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Aline dos Santos Almeida, Dario A. Bahamon, Nuno M. R. Peres, Christiano J. S. de Matos
Summary: The use of graphene in surface plasmon resonance sensors has advantages such as protecting the film and increasing sensitivity. However, the role of single and few layers of graphene in sensitivity enhancement was critically examined, and it was found that only the isotropic layer model provides significant sensitivity increases.
Article
Engineering, Electrical & Electronic
Han-Hsiang Tai, Jer-Chyi Wang, Wen-Hao Chang, Fong-Zhi Chen, Chao-Sung Lai
Summary: AlxOy nanoparticles are formed on MoS2 films through natural oxidation, improving the performance of graphene/AlxOy-NPs/MoS2 heterostructure photodetectors. The induced localized surface plasmon resonance (LSPR) in the ultraviolet-A (UV-A) band enhances the photoresponse by the recombination of excited electrons from AlxOy-NPs/MoS2, resulting in increased photocurrent. The graphene/AlxOy-NPs/MoS2 photodetectors with a 0.5 nm AlxOy film exhibit a photoresponsivity, quantum efficiency, and detectivity of 6.24 A/W, 2120%, and 1.79 x 10(10) Jones, respectively, at an optical power of 10 mW/cm(2).
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Chemistry, Multidisciplinary
Evgeniya D. Novikova, Yuri A. Vorotnikov, Nazar A. Nikolaev, Alphiya R. Tsygankova, Michael A. Shestopalov, Olga A. Efremova
Summary: Photodynamic and photothermal therapies are promising candidates for multimodal anticancer therapies, and combining octahedral molybdenum clusters with plasmonic spherical gold nanoparticles can enhance their photophysical properties synergistically. By careful selection of spacing between the cluster and the gold nanoparticle, significant improvements in luminescence and photosensitizing properties of the cluster were achieved compared to similar gold-free particles. The cluster complex also facilitated energy conversion to heat by gold particles, increasing the heating rate under laser irradiation.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Santosh Kumar, Zhu Guo, Ragini Singh, Qinglin Wang, Bingyuan Zhang, Shuang Cheng, Feng-Zhen Liu, Carlos Marques, Brajesh Kumar Kaushik, Rajan Jha
Summary: This study introduces a fiber-optic localized surface plasmon resonance (LSPR) based biosensor for sensitive detection of Shigella bacterial species. By controlled etching and coating with nanomaterials, the sensor achieves increased refractive index sensitivity and excitation of localized plasmons. Results show successful and efficient detection of Shigella with high sensitivity, making it potentially valuable in the future as an alternative to existing commercial methods.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Physics, Multidisciplinary
Sa Yang, Ren-Long Zhou, Yang-Jun Huang
Summary: This work demonstrates the surface plasmon resonance properties and field confinement between a waveguide and graphene nanoribbons under a strong interaction obtained by coupling with a nanocavity. The resonant frequency and intensity of the GNR resonant modes can be precisely controlled by tuning the Fermi energy and carrier mobility of the graphene, while the cavity length also has good tunability to the resonant mode of cavity. The optical transmission of a waveguide-cavity-graphene structure and the slow-light effect and optical bistability effect in the plasmonic cavity mode are investigated in this study.
FRONTIERS OF PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Nguyen Minh Vuong, Tran Nam Trung, Truong Thi Hien, Nguyen Duc Chinh, Nguyen Duc Quang, Dongsuk Lee, Dahye Kim, The-Long Phan, Dojin Kim
MATERIALS TRANSACTIONS
(2015)
Article
Materials Science, Multidisciplinary
Tran Nam Trung, Vinaya Kumar Arepalli, Rajesh Gudala, Eui-Tae Kim
Article
Chemistry, Multidisciplinary
Tran Nam Trung, Dong-Ok Kim, Eui-Tae Kim
Article
Electrochemistry
Tran Nam Trung, Dong-Bum Seo, Nguyen Duc Quang, Dojin Kim, Eui-Tae Kim
ELECTROCHIMICA ACTA
(2018)
Article
Chemistry, Physical
Dong-Bum Seo, Songhee Kim, Tran Nam Trung, Dojin Kim, Eui-Tae Kim
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Chemistry, Physical
Tran Nam Trung, Fadi Z. Kamand, T. M. Al Tahtamouni
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Physical
Dong-Ok Kim, Hyo-Ki Hong, Dong-Bum Seo, Tran Nam Trung, Chan-Cuk Hwang, Zonghoon Lee, Eui-Tae Kim
Article
Electrochemistry
Dong-Bum Seo, Min-Song Kim, Tran Nam Trung, Eui-Tae Kim
ELECTROCHIMICA ACTA
(2020)
Article
Chemistry, Multidisciplinary
Dong-Bum Seo, Tran Nam Trung, Sung-Su Bae, Eui-Tae Kim
Summary: By manipulating the morphology of MoS2 nanostructures on graphene, the photoelectrochemical performance can be significantly improved. The quality of the heterojunction between graphene and vertically aligned few-layer MoS2 nanosheets is enhanced at low temperatures, leading to better charge transfer properties. Vertically aligned nanosheets provide highly conductive edges, serving as an efficient pathway for photo-generated carriers and achieving optimal PEC performance when controlled within the carrier diffusion length.
Article
Chemistry, Physical
Dong-Bum Seo, Soomin Yoo, Viet Dongquoc, Tran Nam Trung, Eui-Tae Kim
Summary: The study introduced a simple and effective method to synthesize 2D WS2 shell layer on WO3 nanorods, resulting in significantly enhanced photoelectrochemical performance. By controlling the hydrothermal reaction temperature and phase transformation during synthesis, the performance of WO3/WS2 core-shell nanorods was successfully improved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Tran Nam Trung, Nguyen Thi Thuy Kieu, Dai Q. Ho, Dong-Bum Seo, Eui-Tae Kim
Summary: In this study, Sn-doped TiO2 nanorods were synthesized and the doping mechanism of Sn into TiO2 was investigated. The experimental results verified the successful doping of Sn into TiO2, and the theoretical calculations explained how Sn substitutes for Ti in the crystal lattice and enhances the photocatalytic performance. The improved PEC performance of Sn-doped TiO2 nanorods suggests their potential as photocatalyst materials for solar energy-driven applications.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Tran Nam Trung, Tran Van Bay, Dong-Bum Seo, Eui-Tae Kim
Summary: The unique MoS2/Ti-Fe2O3 nanoflakes/nanorods heterostructure was designed to enhance the photoelectrochemical (PEC) performance of Fe2O3 nanorods through Ti doping and MoS2 coating. The MoS2/Ti-Fe2O3 heterostructure photoelectrode exhibited a significantly improved PEC performance, with a photocurrent density 15 times higher than that of the Fe2O3 photoelectrode. The enhanced PEC performance can be attributed to the efficient charge separation and transfer in the MoS2/Ti-Fe2O3 heterostructure, facilitated by the concordance of band gap and band edge levels between Fe2O3 and MoS2.
Article
Nanoscience & Nanotechnology
Tran Nam Trung, Dong-Ok Kim, Jin-Hyung Lee, Van-Duong Dao, Ho-Suk Choi, Eui-Tae Kim
ACS APPLIED MATERIALS & INTERFACES
(2017)
Article
Materials Science, Multidisciplinary
Dong-Ok Kim, Tran Nam Trung, Eui-Tae Kim
KOREAN JOURNAL OF MATERIALS RESEARCH
(2014)