Article
Spectroscopy
Mohammad Kamal Hossain, Qasem Ahmed Drmosh
Summary: Plasmonic nanostructures, particularly irregular surfaces of silver nanorings, have shown promise in surface-enhanced Raman scattering (SERS) spectroscopy. Through the fabrication and characterization of clusters-based Ag nanorings, it was found that they could achieve SERS enhancement factors as high as 2.1 x 10^4. By simulating EM near-field distributions and investigating the irregular shapes and arrangements of clusters within the nanorings, a deeper understanding of the underlying EM mechanism in SERS enhancements was gained.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Materials Science, Multidisciplinary
Laser Assisted, Savita Rani, A. K. Shukla
Summary: The fabrication of silicon nanowires by metal-assisted chemical etching and deposition of silver nanoparticles by the electroless method can be used for SERS detection of organic pollutants. Study shows that increasing the length of SiNWs decreases the enhancement of SERS, and SERS has potential in discriminating mixed dyes.
Article
Chemistry, Analytical
Lanxin Xu, Jiali Ma, Guodong Wei, Chenjie Gu, Tao Jiang
Summary: This study introduces a novel self-energized hybrid substrate for surface-enhanced Raman scattering (SERS) technique, utilizing a distinctive piezoelectric polyvinylidene fluoride (PVDF) film and hydrophilic-hydrophobic strategy. By pressing or bending the PVDF film, the enhanced localized electromagnetic field of Ag nanoparticles (Ag NPs) can be rationally induced, leading to tunable ultra-high sensitivity. The quantitative level of detection is further improved by uniformly anchoring and enriching analytes using a facile hydrophilic-hydrophobic strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Shengjie Xiong, Jia Li, Maobin Wei, Donglai Han, Jihui Lang, Huilian Liu, Jinghai Yang, Yang Liu, Ming Gao
Summary: Ag-doped MoS2 (AMS(x)) was prepared as a SERS substrate with excellent reproducibility, stability, and recyclability. It exhibited an enhancement factor of 4.07 x 10(6) and a detection limit of 10(-9) M, proving its potential for applications in SERS sensing.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Miao Yu, Qihang Tian, Guangyuan He, Kaimin Cui, Jihong Zhang
Summary: Surface-enhanced Raman scattering (SERS) is a novel method for low concentration molecular detection, and tapered fiber SERS probes based on silver nanocubes exhibit high sensitivity. These probes can be used for both qualitative and quantitative analysis, with an optimal cone angle of 8.3 degrees.
ADVANCED FIBER MATERIALS
(2021)
Article
Optics
Mahdi Shariat
Summary: This study demonstrates that plasma printing techniques can be used to directly print silver nanoparticles on various flexible substrates in one step. The technique uses silver nitrate solution as a precursor, which is injected in an aerosol state into a non-thermal plasma jet. The plasma chamber accelerates and reduces the droplets, producing silver nanoparticles, which are then deposited onto polyester fabrics in a controlled manner.
Article
Food Science & Technology
Huanhuan Li, Md Mehedi Hassan, Zhuofang He, Suleiman A. Haruna, Quansheng Chen, Zhen Ding
Summary: In this study, a simultaneous detection platform using SERS and chemometric models was developed for sensitive detection of chlorpyrifos and carbendazim in rice. Silver nanoflowers were used as the SERS substrate, and a novel wavelength selection method called ICPA was employed. The results showed that the developed platform had good linear correlation and prediction ability, and no significant differences were found compared to HPLC.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Tomoko Inose, Shuichi Toyouchi, Shinnosuke Hara, Shoji Sugioka, Peter Walke, Rikuto Oyabu, Beatrice Fortuni, Wannes Peeters, Yuki Usami, Kenji Hirai, Steven De Feyter, Hiroshi Uji-i, Yasuhiko Fujita, Hirofumi Tanaka
Summary: Graphene nanoribbons (GNRs) have attracted tremendous attention for their potential in next-generation nanoelectronic devices. The authors recently discovered that unzipping from double-walled carbon nanotubes (DWNTs) can produce crystalline single-layered GNRs (sGNRs) with high yield. By using silver nanowire-based tip-enhanced Raman spectroscopy (TERS), the authors analyzed the single GNRs and found heterogeneity in defect density and edge structure, which provides deeper insights into the structure and reaction mechanism of unzipped GNRs.
Article
Chemistry, Multidisciplinary
Xinyu Zhou, Shengjie Ge, Yue Sun, Menglin Ran, Yifan Liu, Yu Mao, Xiaowei Cao
Summary: A novel biosensor was developed for the analysis of target DNA in maize, utilizing a high-density hot spot SERS substrate and HCR amplification strategy, exhibiting significant sensitivity and a broad detection range. Additionally, SERS was applied to detect target DNA in maize extract, confirming the feasibility of the detection strategy.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Tingting Fan, Yan Ke, Lijun Zhang, Li Cai, Zhongbo Li
Summary: A large-area three-dimensional well-ordered Co(OH)(2) nanoflower array film decorated with Ag nanoparticles was designed and optimized as a sensitive SERS substrate for trace detection of pesticides, showing great potential in pesticide detection.
Article
Chemistry, Multidisciplinary
Ziang Zhou, Xiuhui Bai, Peishen Li, Changzheng Wang, Ming Guo, Yang Zhang, Peiren Ding, Shaowei Chen, Yunyun Wu, Qiang Wang
Summary: The paper presents a silver nanocubes/polyelectrolyte/gold film sandwich structure as a reproducible, high-performance SERS substrate for sensitive analysis of molecules. The results indicate that organized ensembles of Ag nanocubes can serve as effective SERS substrate for complex molecular systems.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Shiyu Sun, Jingying Zheng, Ruihao Sun, Dan Wang, Guanliang Sun, Xingshuang Zhang, Hongyu Gong, Yong Li, Meng Gao, Dongwei Li, Guanchen Xu, Xiu Liang
Summary: Defect-containing monolayer MoS2 with abundant density of states and effective photoinduced charge transfer resonance becomes a promising and versatile substrate capable of detecting a wide range of dye molecules and enhancing Raman enhancement.
Article
Chemistry, Multidisciplinary
Yanzhao Pang, Mingliang Jin
Summary: A highly aligned AgNW array film was prepared using a self-assembly method, which showed excellent signal reproducibility and detection ability at low concentrations. The uniform distribution of hot spots inside the AgNW substrate amplified the SERS signal.
Article
Chemistry, Physical
Lingxiao Lu, Lanxin Xu, Yongling Zhang, Tao Jiang
Summary: This study demonstrated the effective monitoring of mixed melamine and dicyandiamide in dairy food using a 3D hybrid SERS substrate, which showed high sensitivity and reliable reproducibility.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yasemin Celik, Ayse Kurt
Summary: Hybrid SERS substrates combining noble metal nanoparticles and graphene-based materials offer a stable and cost-effective platform for SERS analysis, which shows great potential to promote the application of SERS for routine analyses.
APPLIED SURFACE SCIENCE
(2021)
Review
Physics, Applied
Zhixing Xu, Yongle Zhang, Zhaona Wang
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2019)
Article
Chemistry, Physical
Dan Wu, Mengnan Hu, Yongyi Zhang, Jing Zhou, Zhaona Wang
APPLIED SURFACE SCIENCE
(2020)
Article
Optics
Xiaoyu Shi, Yaoxing Bian, Junhua Tong, Dahe Liu, Jing Zhou, Zhaona Wang
Article
Chemistry, Physical
Yongle Zhang, Mengnan Hu, Zhaona Wang
Article
Materials Science, Multidisciplinary
Mengnan Hu, Yaoxing Bian, Huihui Shen, Zhaona Wang
ORGANIC ELECTRONICS
(2020)
Article
Optics
Yaoxing Bian, Hanyi Xue, Zhaona Wang
Summary: A programmable random laser was designed to dynamically regulate random lasing pulses through introducing an external waveguide structure with random scattering feedback, achieving liquid and solid film random lasers separately. By switching the adhesion/separation state between the gain and the destroyed waveguide structure, various pulse time series of random lasing can be flexibly realized. The Feinam coding system is further realized for encryption and information transmission by combining programmable random pulses, expanding the application prospects of random lasers in various fields.
LASER & PHOTONICS REVIEWS
(2021)
Article
Materials Science, Multidisciplinary
Yufeng Ding, Chengrong Wei, Huimin Su, Shuoyan Sun, Zhiyong Tang, Zhaona Wang, Guixin Li, Dahe Liu, Shangjr Gwo, Junfeng Dai, Jinwei Shi
Summary: This study presents a hybrid structure that combines a chirped surface plasmon metasurface with a monolayer transition metal dichalcogenide to achieve coherent second harmonic generation covering the entire visible light spectrum. The device demonstrates continuous resonance tuning and space-frequency locking, showing the potentials of a 2D material-plasmon hybrid metasurface for constructing an efficient broadband tunable on-chip coherent light source.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Physical
Lian Wang, Hanyi Xue, Meng Zhu, Yajing Gao, Zhaona Wang
Summary: This study presents the design of a self-powered broadband photodetector using Mn graded doping. The detector exhibits high responsivity and plateau effect in a wide spectral range and is further enhanced by the polarization field induced by graded strain.
Article
Optics
Yucheng Lai, Zhaona Wang
Summary: Local interface response effects are often ignored in traditional electromagnetic boundary conditions models. This study derives generalized nanoscale electromagnetic boundary conditions with interface response functions and uncovers interesting behaviors and phenomena, providing guidance for measuring interface response functions and advancing nanoscale interface photonics.
Article
Crystallography
Yaoxing Bian, Hongyu Yuan, Junying Zhao, Dahe Liu, Wenping Gong, Zhaona Wang
Summary: This study proposes spatial coherence tunable random lasing by designing a random laser with separate coupling configuration between the gain medium and the scattering part. By using a polymer dispersion liquid crystal (PDLC) film with tunable scattering coefficient, red, green, and blue random lasers are obtained. The intensity and spatial coherence of these random lasers can be switched between high and low states by manipulating the scattering intensity of the PDLC film through electric field application or removal.
Article
Physics, Applied
Yongle Zhang, Hanyi Xue, Meng Zhu, Zhaona Wang
Summary: A self-powered photodetector with distinguishable wavelength detection has been developed by using two tandem p-n junctions, which effectively reduce wavelength interference and separate photo-generated carriers. The photodetector achieves bidirectional transient photocurrents for ultraviolet and visible detection, and significantly improves peak-to-peak current through the pyro-phototronic effect.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Astronomy & Astrophysics
Bian YaoXing, Shen HuiHui, Liu DaHe, Gao YaJing, Wang ZhaoNa
Summary: Random lasers, with their unique characteristics of low spatial coherence, flexible design, and simple structure, have broad potential applications in various fields. This paper reviews the development of random lasers, focuses on their working mechanism, and systematically summarizes the research progress on tuning the output performances. The prospects and challenges in random lasers are also discussed.
SCIENTIA SINICA-PHYSICA MECHANICA & ASTRONOMICA
(2022)
Article
Physics, Multidisciplinary
Lai Yu-Cheng, Chen Su-Qi, Mou Lan-Ya, Wang Zhao-Na
Summary: The study derives nanoscale electromagnetic boundary conditions by constructing a dielectric transition layer across the interface of two materials, providing a clear physical picture and theoretical basis for nanoscale electromagnetism. The influence of dielectric constant, electric field transition line shape, and frequency on interface response functions are analyzed. When the material scale is large, the interface response function can be ignored, leading to a degeneration of the nanoscale electromagnetic boundary conditions to classical boundary conditions.
ACTA PHYSICA SINICA
(2021)
Article
Materials Science, Multidisciplinary
Shuoyan Sun, Yufeng Ding, Haozhi Li, Peng Hu, Chang-Wei Cheng, Yungang Sang, Fengzhao Cao, Yue Hu, Andrea Alu, Dahe Liu, Zhaona Wang, Shangjr Gwo, Dezhuan Han, Jinwei Shi
Summary: This study successfully observed symmetry-protected plasmonic BICs in a one-dimensional all-metallic grating within the visible range, demonstrating topological band inversion and engineering off-Gamma-point BICs. Experimental results confirmed a Q factor exceeding 60, with simulation showing potential for over 200 with more grooves. The findings open up promising applications in lasers, sensors, light-matter interactions, nonlinear optics, and quantum optics.
Article
Chemistry, Multidisciplinary
Yaoxing Bian, Xiaoyu Shi, Mengnan Hu, Zhaona Wang