Article
Chemistry, Physical
Yuenan Pan, Qi Chu, Shuang Guo, Sila Jin, Eungyeong Park, Yeonju Park, Yantao Sun, Lei Chen, Young Mee Jung
Summary: The purpose of this study is to investigate the charge transfer process and SERS enhancement mechanism in the Ag/MBA/PAN system with varying thicknesses of PAN. The results show that increasing the PAN thickness leads to higher frequency and intensity of the characteristic MBA band, as well as increased intensity of the b2 mode. The degree of CT also increases with increasing PAN thickness, due to the excited SPR from Ag. The electromagnetic enhancement mechanism at the PAN/Ag interface generates hot electrons and facilitates electron transfer in the CT process.
APPLIED SURFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Lin Zhu, Zhen Meng, Saizhen Hu, Tiancong Zhao, Bing Zhao
Summary: The study focuses on the plasmonic coupling between noble-metal and semiconductor nanostructures, and reveals the enhanced charge transfer and surface-enhanced Raman scattering (SERS) signals in a designed W18O49/Ag heterostructure. A new coupled-plasmon-induced charge transfer mechanism is proposed, providing insight for further studies on plasmonic effects and interfacial charge transfer in metal/semiconductor heterostructures.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Lin Zhu, Zhen Meng, Saizhen Hu, Tiancong Zhao, Bing Zhao
Summary: In this study, we for the first time observed and considered the plasmonic coupling between noble-metal and semiconductor nanostructures in metal/semiconductor heterostructures, using a W18O49/Ag heterostructure composed of Ag nanoparticles and W18O49 nanowires. The heterogeneous structure exhibited a broad and strong surface plasmon resonance (SPR) absorption in the visible wavelength range. Surface-enhanced Raman scattering (SERS) was used to investigate the interactions between metal SPR, semiconductor SPR, and the heterostructure's charge transfer process, revealing that the coupled SPR enhanced the heterostructure's internal charge transfer and SERS signals. A new coupled-plasmon-induced charge transfer mechanism was proposed to explain the improved charge transfer efficiency. This work provides insights for further studies on plasmonic effects and interfacial charge transfer in metal/semiconductor heterostructures.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Xiao-Gang Wang, Jian Wang, Zi-Jin Jiang, Dai-Wen Tao, Xu-Qiang Zhang, Cheng-Wei Wang
Summary: This study successfully fabricated SERS-active substrates with dual-bandgap photonic crystal structures, demonstrating ultra-high sensitivity and stability for trace detection of Rhodamine B, providing significant potential for applications in biomolecular detection and chemical analysis.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Sisi Yan, Jiacheng Sun, Bin Chen, Lang Wang, Sumin Bian, Mohamad Sawan, Haibin Tang, Liaoyong Wen, Guowen Meng
Summary: This article presents a universal SERS platform for reliable and sensitive identification of a wide range of analytes. The key to its success lies in the prepared slot-under-groove nanoarchitecture arrays, which enable strong coupled field enhancement and large spatial mode distribution, thereby delivering high sensitivity for small-sized analytes and large Raman gain for large-sized analytes.
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
Jingbin Li, Wencai Yi, Meng Yin, Haifeng Yang, Junfang Li, Yahui Li, Zhiwei Jiao, Hua Bai, Mingqiang Zou, Guangcheng Xi
Summary: In this study, ultrathin multilayer rhenium (Re) nanosheets were found to exhibit extraordinary surface enhanced Raman scattering (SERS) performance as a rare-earth metal substrate. These Re nanosheets, prepared through a low-temperature molten salt strategy, showed high sensitivity, chemical stability, and signal repeatability. The composite enhancement mechanism caused by localized surface plasmon resonance (SPR) and charge transport played an important role in the rare-earth-SERS system. Furthermore, the Re nanosheets were capable of high-throughput multiassay analysis, allowing rapid separation and identification of various analytes.
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
Qiyuan Dai, Yong Wei, Weiqi Ma, Li Li, Huan Pei
Summary: This study systematically investigates the influence of thin 2D molybdenum disulfide (MoS2) films on the surface-enhanced Raman scattering (SERS) properties of a silver (Ag) nanocavity. The results show that the presence of MoS2 film enhances the plasmonic coupling between the nanocavity and the substrate, leading to significant SERS enhancement. Thinner MoS2 film and shorter nanocavity-film distance further improve the enhancement. Additionally, the spatial resolution of Raman spectroscopy can be improved by reducing the nanocavity radius.
OPTICS COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Ying-Chu Chen, Zhi-Jie Wu, Yu-Kuei Hsu
Summary: The Bi nanoparticle embedded with ZnO nanorod array exhibits enhanced charge carrier photogeneration and efficient charge transfer under sunlight illumination. The composite material shows promise for solar water splitting and bioanalytical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Runcheng Liu, Zhipeng Zha, Muhammad Shafi, Can Li, Wen Yang, Shicai Xu, Mei Liu, Shouzhen Jiang
Summary: The proposed HMM/Ag NPs platform allows for the excitation and utilization of BPP for SERS applications, with the Ag NPs providing strong plasmonic properties and acting as a light-matter coupler. Additionally, the platform successfully decouples BPP into localized surface plasmon using the nano antenna structure of Ag NPs, showing potential for surface-enhanced spectroscopy applications.
Article
Chemistry, Multidisciplinary
Brinton King Eldridge, Saghar Gomrok, James W. Barr, Elise Anne Chaffin, Lauren Fielding, Christian Sachs, Katie Stickels, Paiton Williams, Yongmei Wang
Summary: Gap-enhanced Raman tags are a new type of optical probe that utilize the strong electric field inside the gap between two plasmonic metals to enhance the surface-enhanced Raman scattering response. Our study investigated Au@SiO22@Au nanoparticles with varying shell and gap thicknesses and found that the near-field enhancement spectra inside the gap were stronger than on the outer surface of the nanoparticle. We also discovered that a thin shell combined with a thin gap produced the greatest near-field enhancement.
Article
Chemistry, Physical
Honghao Tian, Youjian Qin, Hongmei Liu, Tian Li, Yuting Li, Xiaohui Fang, Xinping Zhang
Summary: In this study, metal or alloy nanoparticles prepared by the Brust-Schiffrin method were used as inks in a ballpoint pen to handwrite SERS test strips on PTFE membranes. The PTFE membranes showed good lipophilicity and flexibility, allowing for good uniformity. The Au1Ag8 nanoparticles showed the best performance, with the ability to detect 10(-11)-M Rhodamine 6G dyes in a 10-mu L volume with an enhancement factor of 5.4x10(8). The SERS strips were successfully used to detect malachite green in aquaculture and fish tanks.
Article
Spectroscopy
Trong Duc Tran, Thi Hue Nguyen, The Binh Nguyen
Summary: A simple and cost-effective method for fabricating SERS substrates for trace detection of antibiotics was proposed and developed. The nanostructured silicon surface with deposited silver nanoparticles showed high sensitivity and resolution for detecting antibiotics such as malachite green and tetracycline. The method has potential for various applications in trace detection of antibiotics using SERS.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Nanoscience & Nanotechnology
Cheng Zong, Ji-Xin Cheng
Summary: Plasmon-enhanced stimulated Raman scattering (PESRS) microscopy has been developed to achieve single-molecule detection limit. The dispersive-like vibrational line shapes observed in PESRS can be explained by the interference between the local enhanced electromagnetic field induced by the plasmonic nanostructure and the molecular dipole-induced field. The PESRL and PESRG signals exhibit similar signal magnitudes but show reversed dispersive profiles under the same laser wavelength.
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)