1
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Zhang C, Tan J, Du B, Ji C, Pei Z, Shao M, Jiang S, Zhao X, Yu J, Man B, Li Z, Xu K. Reversible Thermoelectric Regulation of Electromagnetic and Chemical Enhancement for Rapid SERS Detection. ACS Appl Mater Interfaces 2024; 16:12085-12094. [PMID: 38385172 DOI: 10.1021/acsami.3c18409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Actively controlling surface-enhanced Raman scattering (SERS) performance plays a vital role in highly sensitive detection or in situ monitoring. Nevertheless, it is still challenging to achieve further modulation of electromagnetic enhancement and chemical enhancement simultaneously in SERS detection. In this study, a silver nanocavity structure with graphene as a spacer layer is coupled with thermoelectric semiconductor P-type gallium nitride (GaN) to form an electric-field-induced SERS (E-SERS) for dual enhancement. After applying the electric field, the intensity of SERS signals is further enhanced by over 10 times. The thermoelectric field enables fast and reproducible doping of graphene, thereby modulating its Fermi level over a wide range. The thermoelectric field also regulates the position of the plasmon resonance peak of the silver nanocavity structure, rendering synchronous dual electromagnetic and chemical regulation. Additionally, the method enables the trace detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). A detailed theoretical analysis is performed based on the experimental results and finite-element calculations, paving the way for the fabrication of high-efficient E-SERS substrates.
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Affiliation(s)
- Chao Zhang
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Jibing Tan
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Baoqiang Du
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Chang Ji
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Zhiyang Pei
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Mingrui Shao
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Shouzhen Jiang
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Xiaofei Zhao
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Jing Yu
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Baoyuan Man
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Zhen Li
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Kaichen Xu
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
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2
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Lv E, Wang T, Wang J, Sun R, Zhang C, Yu J, Li Z, Man B, Zhao X, Zhang C. Cascade Bowl Multicavity Structure for In Situ Surface-Enhanced Raman Scattering Detection of Organic Gas Molecules. J Phys Chem Lett 2024; 15:2247-2254. [PMID: 38380862 DOI: 10.1021/acs.jpclett.4c00087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
With the increasing emphasis on atmospheric environmental protection, it is crucial to find an efficient, direct, and accurate method to identify pollutant species in the atmosphere. To solve this problem, we designed and prepared the cascade multicavity (CMC) structure composed with silver nanoparticles (Ag NPs) as a surface-enhanced Raman scattering (SERS) substrate with favorable light transmittance and flexibility. The multicavity structure distributed on the surface introducing the homogeneous connecting holes endows the structure to more fully utilize the incident light while slowing the gas movement rate. Theoretical and experimental results have demonstrated that the Ag NPs/cascade multicavity (Ag-CMC) SERS substrate is a highly sensitive SERS substrate that can be used for in situ detection of gases under non-perpendicularly incident laser irradiation or bending of the substrate. We believe that the SERS substrate can provide a more efficient and feasible way for in situ detection of gaseous pollutants.
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Affiliation(s)
- Enze Lv
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People's Republic of China
| | - Tao Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People's Republic of China
| | - Junkun Wang
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Ruijing Sun
- School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People's Republic of China
| | - Chengrui Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Jing Yu
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Zhen Li
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Baoyuan Man
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Xiaofei Zhao
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Chao Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
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3
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Du B, Liu Y, Tan J, Wang Z, Ji C, Shao M, Zhao X, Yu J, Jiang S, Zhang C, Man B, Li Z. Thermoelectrically Driven Dual-Mechanism Regulation on SERS and Application Potential for Rapid Detection of SARS-CoV-2 Viruses and Microplastics. ACS Sens 2024; 9:502-513. [PMID: 38193423 DOI: 10.1021/acssensors.3c02507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Electric-induced surface-enhanced Raman scattering (E-SERS) has been widely studied for its flexible regulation of SERS after the substrate is prepared. However, the enhancement effect is not sufficiently high in the E-SERS technology reported thus far, and no suitable field of application exists. In this study, a highly sensitive thermoelectrically induced SERS substrate, Ag/graphene/ZnO (AGZ), was fabricated using ZnO nanoarrays (NRs), graphene, and Ag nanoparticles (NPs). Applying a temperature gradient to the ZnO NRs enhanced the SERS signals of the probe molecules by a factor of approximately 20. Theoretical and experimental results showed that the thermoelectric potential enables the simultaneous modulation of the Fermi energy level of graphene and the plasma resonance peak of Ag NPs, resulting in a double enhancement in terms of physical and chemical mechanisms. The AGZ substrate was then combined with a mask to create a wearable thermoelectrically enhanced SERS mask for collecting SARS-CoV-2 viruses and microplastics. Its SERS signal can be enhanced by the temperature gradient created between a body heat source (∼37 °C) and a cold environment. The suitability of this method for virus detection was also examined using a reverse transcription-polymerase chain reaction and SARS-CoV-2 virus antigen detection. This work offers new horizons for research of E-SERS, and its application potential for rapid detection of the SARS-CoV-2 virus and microplastics was also studied.
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Affiliation(s)
- Baoqiang Du
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Yalin Liu
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Jibing Tan
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Zhanning Wang
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Chang Ji
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Mingrui Shao
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Xiaofei Zhao
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Jing Yu
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Shouzhen Jiang
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Chao Zhang
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Baoyuan Man
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Zhen Li
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
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Zhang X, Chen S, Ma H, Sun T, Cui X, Huo P, Man B, Yang C. Asymmetric Schottky Barrier-Generated MoS 2/WTe 2 FET Biosensor Based on a Rectified Signal. Nanomaterials (Basel) 2024; 14:226. [PMID: 38276744 PMCID: PMC10820193 DOI: 10.3390/nano14020226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/09/2024] [Accepted: 01/14/2024] [Indexed: 01/27/2024]
Abstract
Field-effect transistor (FET) biosensors can be used to measure the charge information carried by biomolecules. However, insurmountable hysteresis in the long-term and large-range transfer characteristic curve exists and affects the measurements. Noise signal, caused by the interference coefficient of external factors, may destroy the quantitative analysis of trace targets in complex biological systems. In this report, a "rectified signal" in the output characteristic curve, instead of the "absolute value signal" in the transfer characteristic curve, is obtained and analyzed to solve these problems. The proposed asymmetric Schottky barrier-generated MoS2/WTe2 FET biosensor achieved a 105 rectified signal, sufficient reliability and stability (maintained for 60 days), ultra-sensitive detection (10 aM) of the Down syndrome-related DYRK1A gene, and excellent specificity in base recognition. This biosensor with a response range of 10 aM-100 pM has significant application potential in the screening and rapid diagnosis of Down syndrome.
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Affiliation(s)
- Xinhao Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (X.Z.); (S.C.); (H.M.); (T.S.); (X.C.); (P.H.)
| | - Shuo Chen
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (X.Z.); (S.C.); (H.M.); (T.S.); (X.C.); (P.H.)
| | - Heqi Ma
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (X.Z.); (S.C.); (H.M.); (T.S.); (X.C.); (P.H.)
| | - Tianyu Sun
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (X.Z.); (S.C.); (H.M.); (T.S.); (X.C.); (P.H.)
| | - Xiangyong Cui
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (X.Z.); (S.C.); (H.M.); (T.S.); (X.C.); (P.H.)
| | - Panpan Huo
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (X.Z.); (S.C.); (H.M.); (T.S.); (X.C.); (P.H.)
| | - Baoyuan Man
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (X.Z.); (S.C.); (H.M.); (T.S.); (X.C.); (P.H.)
| | - Cheng Yang
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China; (X.Z.); (S.C.); (H.M.); (T.S.); (X.C.); (P.H.)
- Shandong Provincial Engineering and Technical Center of Light Manipulations, Shandong Normal University, Jinan 250014, China
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5
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Yang M, Pan Y, Ji C, Shao M, Li Z, Yu J, Li C, Man B, Zhang C, Zhao X. Three-Dimensional MXene-AgNP Hollow Spheres for In Situ Surface-Enhanced Raman Scattering Detection of Catalysis Reactions. J Phys Chem Lett 2023; 14:9019-9026. [PMID: 37782037 DOI: 10.1021/acs.jpclett.3c02379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
MXenes are attractive candidates in the fields of surface-enhanced Raman scattering (SERS) and catalysis. However, most of the current studies on MXenes are based on blocks and nanosheets, limiting their SERS and catalytic properties. Herein, we have prepared 3D MXene hollow spheres wrapped with silver nanoparticles (Ti3C2-AgNP HSs) using a sacrificial template method, which exhibits excellent sensitivity with a low detection limit due to good light-trapping capability of the hollow sphere and strong localized surface plasmon resonance (LSPR) effect of AgNPs. Furthermore, it shows outstanding photocatalytic performance and realizes in situ SERS monitoring of the 4-nitrobenzenethiol (4-NTP) to 4-aminothiophenol (4-ATP) catalysis reaction. The finite-difference time-domain (FDTD) simulations confirm that 3D Ti3C2-AgNP hollow structures have stronger hot spots than 3D solid structures and higher SERS sensitivity for molecule detection. Therefore, it promises to be an excellent bifunctional material for highly sensitive SERS detection and the in situ monitoring of catalytic reactions.
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Affiliation(s)
- Moru Yang
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Yuanyuan Pan
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Chang Ji
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Mingrui Shao
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Zhen Li
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Jing Yu
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Chonghui Li
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China
| | - Baoyuan Man
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Chao Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Xiaofei Zhao
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
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6
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Pei Z, Li J, Ji C, Tan J, Shao Z, Zhao X, Li Z, Man B, Yu J, Zhang C. Flexible Cascaded Wire-in-Cavity-in-Bowl Structure for High-Performance and Polydirectional Sensing of Contaminants in Microdroplets. J Phys Chem Lett 2023:5932-5939. [PMID: 37345745 DOI: 10.1021/acs.jpclett.3c00988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/23/2023]
Abstract
To improve the drawback of surface-enhanced Raman scattering (SERS) sensors that are sensitive to excitation angles and realize the monitoring of contaminants in complex environments, we have proposed and prepared a cascaded wire-in-cavity-in-bowl (WICIB) structure on flexible polydimethysiloxane, with feasibility for plasmonic coupling. We demonstrated that the WICIB structure can serve as a highly sensitive, homogeneous, and stable SERS substrate for conventional detection. The plasmonic coupling and distribution of the enhanced electromagnetic field were evidently proven by finite element simulations, and the strong electromagnetic field was regulated around the wire and inside the cavity, which is very beneficial for the polydirectional and in situ detection. By virtue of the triple synergistic enhancement effect and unique optical properties, we successfully achieved the in situ detection of the residual pollutant molecules, ziram and 2-naphthalenethiol, in microdroplets of apple juice and lake water. Accordingly, such a flexible SERS sensor exhibits great potential in on-site environmental monitoring.
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Affiliation(s)
- Zhiyang Pei
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Jing Li
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Chang Ji
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Jibing Tan
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Zhida Shao
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Xiaofei Zhao
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Zhen Li
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Baoyuan Man
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Jing Yu
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Chao Zhang
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
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Shao M, Liu D, Lu J, Zhao X, Yu J, Zhang C, Man B, Pan H, Li Z. Giant enhancement of the initial SERS activity for plasmonic nanostructures via pyroelectric PMN-PT. Nanoscale Horiz 2023. [PMID: 37222504 DOI: 10.1039/d3nh00053b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Herein, a simply-prepared and highly sensitive electric field-induced surface-enhanced Raman spectroscopy (E-SERS) substrate is proposed by combining a pyroelectric material (PMN-PT) with the plasmonic silver nanoparticles (Ag NP). The intensity of SERS signals is further enhanced by more than 100 times after the application of positive or negative pyroelectric potentials. Theoretical calculations and experimental characterizations demonstrate that the chemical mechanism (CM) as induced by the charge transfer (CT) is mainly responsible for enhanced E-SERS. In addition, a novel nanocavity structure with PMN-PT/Ag/Al2O3/silver nanocubes (Ag NCs) was also introduced, which could effectively convert light energy into heat energy and realize a tremendous enhancement of SERS signals. These findings are expected to further accelerate the application of plasmonic metal nanoparticle-based pyroelectric materials in the fields of energy conversion, optical-sensors and photocatalysts.
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Affiliation(s)
- Mingrui Shao
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Di Liu
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, 999078, P. R. China.
| | - Jinxuan Lu
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Xiaofei Zhao
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Jing Yu
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Chao Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Baoyuan Man
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Hui Pan
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, 999078, P. R. China.
- Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Macao SAR, 999078, P. R. China
| | - Zhen Li
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
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Chen S, Sun Y, Fan X, Xu Y, Chen S, Zhang X, Man B, Yang C, Du J. Review on two-dimensional material-based field-effect transistor biosensors: accomplishments, mechanisms, and perspectives. J Nanobiotechnology 2023; 21:144. [PMID: 37122015 PMCID: PMC10148958 DOI: 10.1186/s12951-023-01898-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 04/16/2023] [Indexed: 05/02/2023] Open
Abstract
Field-effect transistor (FET) is regarded as the most promising candidate for the next-generation biosensor, benefiting from the advantages of label-free, easy operation, low cost, easy integration, and direct detection of biomarkers in liquid environments. With the burgeoning advances in nanotechnology and biotechnology, researchers are trying to improve the sensitivity of FET biosensors and broaden their application scenarios from multiple strategies. In order to enable researchers to understand and apply FET biosensors deeply, focusing on the multidisciplinary technical details, the iteration and evolution of FET biosensors are reviewed from exploring the sensing mechanism in detecting biomolecules (research direction 1), the response signal type (research direction 2), the sensing performance optimization (research direction 3), and the integration strategy (research direction 4). Aiming at each research direction, forward perspectives and dialectical evaluations are summarized to enlighten rewarding investigations.
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Affiliation(s)
- Shuo Chen
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Yang Sun
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology, 30 Xueyuan Road, Haidian District, Beijing, 100083, People's Republic of China
| | - Xiangyu Fan
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Yazhe Xu
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Shanshan Chen
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Xinhao Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Baoyuan Man
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Cheng Yang
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, People's Republic of China.
| | - Jun Du
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, People's Republic of China.
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Sun Y, Yang C, Jiang X, Zhang P, Chen S, Su F, Wang H, Liu W, He X, Chen L, Man B, Li Z. High-intensity vector signals for detecting SARS-CoV-2 RNA using CRISPR/Cas13a couple with stabilized graphene field-effect transistor. Biosens Bioelectron 2023; 222:114979. [PMID: 36463654 PMCID: PMC9710152 DOI: 10.1016/j.bios.2022.114979] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022]
Abstract
False detection of SARS-CoV-2 is detrimental to epidemic prevention and control. The scalar nature of the detected signal and the imperfect target recognition property of developed methods are the root causes of generating false signals. Here, we reported a collaborative system of CRISPR-Cas13a coupling with the stabilized graphene field-effect transistor, providing high-intensity vector signals for detecting SARS-CoV-2. In this collaborative system, SARS-CoV-2 RNA generates a "big subtraction" signal with a right-shifted feature, whereas any untargets cause the left-shifted characteristic signal. Thus, the false detection of SARS-CoV-2 is eliminated. High sensitivity with 0.15 copies/μL was obtained. In addition, the wide concerned instability of the graphene field-effect transistor for biosensing in solution environment was solved by the hydrophobic treatment to its substrate, which should be a milestone in advancing it's engineering application. This collaborative system characterized by the high-intensity vector signal and amazing stability significantly advances the accurate SARS-CoV-2 detection from the aspect of signal nature.
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Affiliation(s)
- Yang Sun
- Department of Chemistry and Biological Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing, 100083, PR China
| | - Cheng Yang
- Department of Physics and Electronics, Shandong Normal University 1 Daxue Road, Changqing District, Jinan, Shandong Province, 250014, PR China
| | - Xiaolin Jiang
- Shandong Provincial Key Laboratory of Communicable Disease Control and Prevention, Shandong Center for Disease Control and Prevention, 16992 Jingshi Road, Lixia District, Jinan, Shandong Province, 250014, PR China
| | - Pengbo Zhang
- Department of Chemistry and Biological Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing, 100083, PR China
| | - Shuo Chen
- Department of Physics and Electronics, Shandong Normal University 1 Daxue Road, Changqing District, Jinan, Shandong Province, 250014, PR China
| | - Fengxia Su
- Department of Chemistry and Biological Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing, 100083, PR China
| | - Hui Wang
- Department of Chemistry and Biological Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing, 100083, PR China
| | - Weiliang Liu
- Department of Chemistry and Biological Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing, 100083, PR China
| | - Xiaofei He
- Department of Chemistry and Biological Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing, 100083, PR China
| | - Lei Chen
- Department of of Life Sciences, Shandong Normal University 1 Daxue Road, Changqing District, Jinan, Shandong Province, 250014, PR China.
| | - Baoyuan Man
- Department of Physics and Electronics, Shandong Normal University 1 Daxue Road, Changqing District, Jinan, Shandong Province, 250014, PR China.
| | - Zhengping Li
- Department of Chemistry and Biological Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing, 100083, PR China.
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10
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Lv E, Wang J, Li J, Zhao X, Yu J, Xu S, Li Z, Man B, Xue M, Xu J, Zhang C. Nanowire-in-bowl-shaped piezoelectric cavity structure for SERS directional detection of nanoplastics less than 50 nm. Opt Express 2023; 31:5297-5313. [PMID: 36823814 DOI: 10.1364/oe.480898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/11/2023] [Indexed: 06/18/2023]
Abstract
The accurate detection of nanoplastics is crucial due to their harmful effects on the environment and human beings. However, there is a lack of detection methods for nanoplastics smaller than 50 nm. In this research, we successfully constructed an Ag/CuO nanowire (NW)/BaTiO3@Polyvinylidene fluoride (PVDF) Bowl-shaped substrate with a nanowire-in-Bowl-shaped piezoelectric cavity structure that can modulate surface-enhanced Raman scattering (SERS) by the piezoelectric effect by the virtue of the tip effect of the CuO NW and light focusing effect of the Bowl-shaped cavity. Due to its unique nanowire-in-Bowl-shaped structure and piezoelectrically modifiable ability, nanoplastics less than 50 nm were successfully detected and quantitatively analyzed. We believe that the Ag/CuO NW/BaTiO3@PVDF Bowl-shaped substrate can provide an efficient, accurate, and feasible way to achieve qualitative and quantitative detection of nanoplastics.
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Shafi M, Duan P, Liu W, Zhang W, Zhang C, Hu X, Zha Z, Liu R, Liu C, Jiang S, Man B, Liu M. SERS Sensing Using Graphene-Covered Silver Nanoparticles and Metamaterials for the Detection of Thiram in Soil. Langmuir 2022; 38:16183-16193. [PMID: 36520051 DOI: 10.1021/acs.langmuir.2c02941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Multilayer hyperbolic metamaterial (HMM)-based SERS substrates have received special consideration because they accommodate various propagation modes such as surface plasmonic polaritons (SPP). However, the SPP modes are difficult to generate in HMM due to their weak electric field enhancement. In this article, we designed novel SERS substrates consisting of graphene-covered AgNPs and HMM. The graphene-covered AgNPs work as an external coupling structure for hyperbolic metamaterials due to this structure exhibiting significant plasmonic effects as well as unique optical features. The localized surface plasmonic resonance (LSPR) of the graphene-covered AgNPs excited the SPP and thus formed a strong hot spot zone in the nanogap area of the graphene. The Raman experiment was performed using rhodamine 6G (R6G) and crystal violet (CV), which showed high stability and a maximum enhancement factor of 2.12 × 108. The COMSOL simulation further clarified that enhanced SERS performance was due to the presence of monolayer graphene and provided an atomically flat surface for organic molecules in a more controllable manner. Interestingly, the proposed SERS structure carries out quantitative detection of thiram in soil and can satisfy the basic environmental need for pesticide residue in the soil.
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Affiliation(s)
- Muhammad Shafi
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China
| | - Pengyi Duan
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China
| | - Wenying Liu
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China
| | - Wenjie Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China
| | - Can Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China
| | - Xiaoxuan Hu
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China
| | - Zhipeng Zha
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China
| | - Runcheng Liu
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China
| | - Cong Liu
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China
| | - Shouzhen Jiang
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China
| | - Baoyuan Man
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China
| | - Mei Liu
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China
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12
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Chen C, Zhang W, Duan P, Liu W, Shafi M, Hu X, Zhang C, Zhang C, Man B, Liu M. SERS enhancement induced by the Se vacancy defects in ultra-thin hybrid phase SnSe x nanosheets. Opt Express 2022; 30:37795-37814. [PMID: 36258361 DOI: 10.1364/oe.473965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Improving the photo-induced charge transfer (PICT) efficiency by adjusting the energy levels difference between adsorbed probe molecules and substrate materials is a key factor for boosting the surface enhanced Raman scattering (SERS) based on the chemical mechanism (CM). Herein, a new route to improve the SERS activity of two-dimensional (2D) selenium and tin compounds (SnSex, 1 ≤ x ≤ 2) by the hybrid phase materials is researched. The physical properties and the energy band structure of SnSex were analyzed. The enhanced SERS activity of 2D SnSex can be attribute to the coupling of the PICT resonance caused by the defect energy levels induced by Se vacancy and the molecular resonance Raman scattering (RRS). This established a relationship between the physical properties and SERS activity of 2D layered materials. The resonance probe molecule, rhodamine (R6G), which is used to detect the SERS performance of SnSex nanosheets. The enhancement factor (EF) of R6G on the optimized SnSe1.35 nanosheets can be as high as 2.6 × 106, with a detection limit of 10-10 M. The SERS result of the environmental pollution, thiram, shows that the SnSex nanosheets have a practical application in trace SERS detection, without the participation of metal particles. These results demonstrate that, through hybrid phase materials, the SERS sensitivity of 2D layered nanomaterials can be improved. It provides a kind of foreground non-metal SERS substrate in monitoring or detecting and provide a deep insight into the chemical SERS mechanism based on 2D layered materials.
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13
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Ji C, Lu J, Shan B, Li F, Zhao X, Yu J, Xu S, Man B, Zhang C, Li Z. The Origin of Mo 2C Films for Surface-Enhanced Raman Scattering Analysis: Electromagnetic or Chemical Enhancement? J Phys Chem Lett 2022; 13:8864-8871. [PMID: 36125003 DOI: 10.1021/acs.jpclett.2c02392] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The relatively weak Raman enhanced factors of semiconductor-based substrate limit its further application in surface-enhanced Raman scattering (SERS). Here, a kind of two-dimensional (2D) semimetal material, molybdenum carbide (Mo2C) film, is prepared via a chemical vapor deposition (CVD) method, and the origin of SERS is investigated for the first time. The detection limits of the prepared Mo2C films for crystal violet (CV) and rhodamine 6G (R6G) molecules are low at 10-6 M and 10-8 M, respectively. Our detailed theoretical analysis, based on density functional theory and the finite element method, demonstrates that the enhancement of the 2D Mo2C film is indeed CM in nature rather than the EM effects. Besides, the basic doping strategies are proposed to further optimize the SERS sensitivity of Mo2C for Fermi level regulation. We believe this work will provide a helpful guide for developing a highly sensitive semimetal SERS substrate.
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Affiliation(s)
- Chang Ji
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Jinxuan Lu
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Baojie Shan
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Fengrui Li
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Xiaofei Zhao
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Jing Yu
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Shicai Xu
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, P.R. China
| | - Baoyuan Man
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Chao Zhang
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Zhen Li
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
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Li F, Shan B, Zhao X, Ji C, Li Z, Yu J, Xu S, Jiao Y, Zhang C, Man B. Plasmonic enhanced piezoelectric photoresponse with flexible PVDF@Ag-ZnO/Au composite nanofiber membranes. Opt Express 2022; 30:32509-32527. [PMID: 36242311 DOI: 10.1364/oe.469182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 08/08/2022] [Indexed: 06/16/2023]
Abstract
The coordination of piezoelectric and plasmonic effects to regulate the separation and migration of photo-generated carriers is still a significant method to improve the performance of visible-light photoresponse. Herein, we propose the PVDF@Ag-ZnO/Au composite nanofiber membranes utilizing the piezoelectric and plasmonic effects to promote the photocatalytic degradation of organic dyes. Here, ZnO nanorods can generate a built-in electric field under vibration to separate electron-hole pairs. The Schottky junction formed by noble metal/semiconductor can not only inhibit the recombination of photo-generated carriers and accelerate the migration of carriers, but also enhance the utilization of visible light. In addition, the structure has excellent flexibility and easy recycling characteristics. We demonstrate that the plasmonic effect of noble metal can enhance the light response of membranes and broaden light absorption from ultraviolet to visible light region. With the help of the surface-enhanced Raman scattering (SERS), modulation effects of the piezoelectric effect on light response is proved. For catalytic processes, rhodamine B (98.8%) can be almost completely degraded using PVDF@Ag-ZnO/Au within 120 minutes in the piezoelectric photocatalysis process, which is 2.2 and 2.8 times higher than photocatalysis and piezoelectric catalysis, respectively. This work provides a promising strategy for harnessing solar and mechanical energy.
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Xu J, Li J, Guo G, Zhao X, Li Z, Xu S, Li C, Man B, Yu J, Zhang C. Facilely Flexible Imprinted Hemispherical Cavity Array for Effective Plasmonic Coupling as SERS Substrate. Nanomaterials (Basel) 2021; 11:3196. [PMID: 34947549 PMCID: PMC8705896 DOI: 10.3390/nano11123196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 11/22/2021] [Accepted: 11/24/2021] [Indexed: 11/25/2022]
Abstract
The focusing field effect excited by the cavity mode has a positive coupling effect with the metal localized surface plasmon resonance (LSPR) effect, which can stimulate a stronger local electromagnetic field. Therefore, we combined the self-organizing process for component and array manufacturing with imprinting technology to construct a cheap and reproducible flexible polyvinyl alcohol (PVA) nanocavity array decorating with the silver nanoparticles (Ag NPs). The distribution of the local electromagnetic field was simulated theoretically, and the surface-enhanced Raman scattering (SERS) performance of the substrate was evaluated experimentally. The substrate shows excellent mechanical stability in bending experiments. It was proved theoretically and experimentally that the substrate still provides a stable signal when the excited light is incident from different angles. This flexible substrate can achieve low-cost, highly sensitive, uniform and conducive SERS detection, especially in situ detection, which shows a promising application prospect in food safety and biomedicine.
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Affiliation(s)
- Jihua Xu
- Collaborative Innovation Center of Light Manipulations and Applications, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China; (J.X.); (J.L.); (G.G.); (X.Z.); (Z.L.); (B.M.)
| | - Jinmeng Li
- Collaborative Innovation Center of Light Manipulations and Applications, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China; (J.X.); (J.L.); (G.G.); (X.Z.); (Z.L.); (B.M.)
| | - Guangxu Guo
- Collaborative Innovation Center of Light Manipulations and Applications, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China; (J.X.); (J.L.); (G.G.); (X.Z.); (Z.L.); (B.M.)
| | - Xiaofei Zhao
- Collaborative Innovation Center of Light Manipulations and Applications, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China; (J.X.); (J.L.); (G.G.); (X.Z.); (Z.L.); (B.M.)
| | - Zhen Li
- Collaborative Innovation Center of Light Manipulations and Applications, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China; (J.X.); (J.L.); (G.G.); (X.Z.); (Z.L.); (B.M.)
| | - Shicai Xu
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China; (S.X.); (C.L.)
| | - Chonghui Li
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China; (S.X.); (C.L.)
| | - Baoyuan Man
- Collaborative Innovation Center of Light Manipulations and Applications, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China; (J.X.); (J.L.); (G.G.); (X.Z.); (Z.L.); (B.M.)
| | - Jing Yu
- Collaborative Innovation Center of Light Manipulations and Applications, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China; (J.X.); (J.L.); (G.G.); (X.Z.); (Z.L.); (B.M.)
| | - Chao Zhang
- Collaborative Innovation Center of Light Manipulations and Applications, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China; (J.X.); (J.L.); (G.G.); (X.Z.); (Z.L.); (B.M.)
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16
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Zhang C, Ji C, Yu J, Li Z, Li Z, Li C, Xu S, Li W, Man B, Zhao X. MoS 2-based multiple surface plasmonic coupling for enhanced surface-enhanced Raman scattering and photoelectrocatalytic performance utilizing the size effect. Opt Express 2021; 29:38768-38780. [PMID: 34808922 DOI: 10.1364/oe.441176] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
MoS2-based heterostructures have received increasing attention for not only surface-enhanced Raman scattering (SERS) but also for enhanced photoelectrocatalytic (PEC) performance. This study presents a hydrothermal method for preparing vertical MoS2 nanosheets composed of in situ grown AuNPs with small size and chemically reduced AgNPs with large size to achieve the synergistic enhancement of SERS and PEC properties owing to the size effect of the plasmonic structure. Compared with pristine MoS2 nanosheets and unitary AuNPs or AgNPs composited with MoS2 nanosheets, the ternary heterostructure exhibited the strongest electromagnetic field and surface plasmon coupling, which was confirmed by finite-difference time-domain (FDTD) simulation and absorption spectra. In addition, the experimental results confirmed the outstanding SERS enhancement with an EF of 1.1×109, and the most efficient hydrogen evolution reaction (HER) activity with a sensitive photocurrent response, attributing to the multiple surface plasmonic coupling effects of the Au-Ag bimetal and efficient charge-transfer process between MoS2 and the bimetal. That is, it provides a robust method for developing multi-size bimetal-semiconductor complex nanocomposites for high-performance SERS sensors and PEC applications.
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Liu C, Lei F, Wei Y, Li Z, Zhang C, Peng Q, Man B, Yu J. Preparation of a superhydrophobic AgNP/GF substrate and its SERS application in a complex detection environment. Opt Express 2021; 29:34085-34096. [PMID: 34809206 DOI: 10.1364/oe.441606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/26/2021] [Indexed: 06/13/2023]
Abstract
Surface-enhanced Raman scattering (SERS) is widely considered to be a fingerprint spectrum that can realize molecular identification, and it continues to receive a lot of attention due to its high sensitivity and powerful qualitative analysis capabilities. In recent years, there has been a lot of work and reports on super-sensitive SERS substrates, but often the enhanced ability of the substrate is also effective for impurities and irrelevant molecules. Therefore, a problem that still remains to be solved is how to perform effective trace detection of specific substances in a complex detection environment. Herein, a superhydrophobic Ag nanoparticle/glass microfibre filter (AgNP/GF) substrate was designed to realize the Raman detection of complex multiphase solutions. The hydrophobic three-dimensional net-like structure provides efficient Raman enhancement, making the substrate have extremely high detection limits for dye molecules and even achieving specific detection of the hexane phase component (thiram molecule) in a multiphase solution.
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Shao M, Zhang C, Yu J, Jiang S, Zhao X, Li Z, Lu W, Man B, Li Z. Noble metal modified ReS 2 nanocavity for surface-enhanced Raman spectroscopy (SERS) analysis. Opt Express 2021; 29:28664-28679. [PMID: 34614992 DOI: 10.1364/oe.435627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
The rhenium disulphide (ReS2) nanocavity-based surface enhanced Raman scattering (SERS) substrates ware fabricated on the gold-modified silicon pyramid (PSi) by thermal evaporation technology and hydrothermal method. In this work, the ReS2 nanocavity was firstly combined with metal nanostructures in order to improve the SERS properties of ReS2 materials, and the SERS response of the composite structure exhibits excellent performance in sensitivity, uniformity and repeatability. Numerical simulation reveals the synergistic effect of the ReS2 nanocavity and the plasmon resonance generated by the metal nanostructures. And the charge transfer between the metal, ReS2 and the analytes was also verified and plays an non-ignorable role. Besides, the plasmon-driven reaction for p-nitrothiophenol (PNTP) to p,p'-dimercaptobenzene (DMAB) conversion was successfully in-situ monitored. Most importantly, it is found for the first time that the SERS properties of ReS2 nanocavity-based substrates are strongly temperature dependent, and the SERS effect achieves the best performance at 45 °C. In addition, the low concentration detection of malachite green (MG) and crystal violet (CV) molecules in lake water shows its development potential in practical application.
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Liu M, Xu Y, Gao Z, Zhang C, Yu J, Wang J, Ma X, Hu H, Yin H, Zhang F, Man B, Sun Q. Natural biomaterial sarcosine as an interfacial layer enables inverted organic solar cells to exhibit over 16.4% efficiency. Nanoscale 2021; 13:11128-11137. [PMID: 34132712 DOI: 10.1039/d0nr09090e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The natural biomaterial sarcosine as an electron transport layer (ETL) to modify ITO or ITO/ZnO was successfully introduced into inverted organic solar cells (OSCs) with PM6:BTP-BO-4Cl as the active layer. The introduction of sarcosine on the surface of ITO or ITO/ZnO resulted in lower work function (WF) and higher surface energy. The active layers processed on the surfaces of ITO or ITO/ZnO presented a more optimized morphology and a more ordered molecular arrangement after their modification with sarcosine. The introduction of sarcosine as an ETL promoted charge transport and collection in the OSCs. Therefore, the power conversion efficiency (PCE) of the OSCs increased to 13.53% from 3.86% by modifying ITO with sarcosine. The PCE of the OSCs with ZnO as ETLs improved to 16.45% from 14.85% by modifying ZnO with sarcosine. The improved PCEs benefited from the simultaneously improved short-circuit current density (JSC), fill factor (FF), and open-circuit voltage (VOC). Therefore, this work demonstrates that sarcosine has great potential as an ETL to improve the performance of OSCs.
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Affiliation(s)
- Mei Liu
- Collaborative Innovation Center of Light Manipulations and Applications in Universities of Shandong, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
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Liu C, Li J, Lei F, Wei Y, Li Z, Zhang C, Peng Q, Yu J, Man B. SERS substrate with wettability difference for molecular self-concentrating detection. Nanotechnology 2021; 32:375603. [PMID: 34049298 DOI: 10.1088/1361-6528/ac0665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/28/2021] [Indexed: 06/12/2023]
Abstract
The surface-enhanced Raman spectroscopy (SERS) has attracted much attention due to the powerful capability of quantificational analysis. Nowadays, most of the enhancement effect by SERS substrate is provided by the 'hot spots' occupying relatively small space. When the amount of analyte is too low, it is difficult to ensure that all the probe molecules can be placed into the 'hot spots', which is a headache in SERS quatification. In order to solve this problem, we have developed a structure of CuO nanowires/Ag nanoparticles with wettability capacity difference, which can aggregate molecules in water and oil simultaneously under two different mechanisms. The limit of detection and enhancement factor of this structure are estimated as 10-15M and 1.55 × 1011respectively (for rhodamine 6G, R6G). In a proof-in-principle experiment of sewage detection, it successfully achieved the aggregation and additional enhancement of both the R6G molecules in aqueous solution and thiuram molecules in toluene, realizing efficient and accurate Raman detection.
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Affiliation(s)
- Chundong Liu
- School of Physics and Electronics, Shandong Provincial Engineering and Technical Center of Light Manipulation, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Jia Li
- School of Physics and Electronics, Shandong Provincial Engineering and Technical Center of Light Manipulation, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Fengcai Lei
- College of Chemistry, Chemical Engineering and Materials Science, Institute of Biomedical Sciences, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Yisheng Wei
- School of Physics and Electronics, Shandong Provincial Engineering and Technical Center of Light Manipulation, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Zhen Li
- School of Physics and Electronics, Shandong Provincial Engineering and Technical Center of Light Manipulation, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Chao Zhang
- School of Physics and Electronics, Shandong Provincial Engineering and Technical Center of Light Manipulation, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Qianqian Peng
- School of Physics and Electronics, Shandong Provincial Engineering and Technical Center of Light Manipulation, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Jing Yu
- School of Physics and Electronics, Shandong Provincial Engineering and Technical Center of Light Manipulation, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Baoyuan Man
- School of Physics and Electronics, Shandong Provincial Engineering and Technical Center of Light Manipulation, Shandong Normal University, Jinan, 250014, People's Republic of China
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Xia Y, Sun Y, Li H, Chen S, Zhu T, Wang G, Man B, Pan J, Yang C. Plasma treated graphene FET sensor for the DNA hybridization detection. Talanta 2021; 223:121766. [DOI: 10.1016/j.talanta.2020.121766] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 10/06/2020] [Accepted: 10/08/2020] [Indexed: 12/17/2022]
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Zhu T, Sun Y, Li C, Xia Y, Wang G, Lu W, Shao M, Man B, Yang C. Film wrap nanoparticle system with the graphene nano-spacer for SERS detection. Opt Express 2021; 29:1360-1370. [PMID: 33726353 DOI: 10.1364/oe.410603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 12/17/2020] [Indexed: 06/12/2023]
Abstract
Film wrap nanoparticle system (FWPS) is proposed and fabricated to perform SERS effect, where the Ag nanoparticle was completely wrapped by Au film and the double-layered graphene was selected as the sub-nano spacer. In this system, the designed nanostructure can be fully rather than partly used to generate hotspots and absorb probe molecules, compared to the nanoparticle to nanoparticle system (PTPS) or nanoparticle to film system (PTFS). The optimal fabricating condition and performance of this system were studied by the COMSOL Multiphysics. The simulation results show that the strongly large-scale localized electromagnetic field appears in the whole space between the Ag nanoparticle and Au film. The experimental results show that the FWPS presents excellent sensitivity (crystal violet (CV): 10-11 M), uniformity, stability and high enhancement factor (EF: 2.23×108). Malachite green (MG; 10-10 M) on the surface of fish and DNA strands with different base sequence (A, T, C) were successfully detected. These advanced results indicate that FWPS is highly promising to be applied for the detection of environmental pollution and biomolecules.
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Liu L, Hou S, Zhao X, Liu C, Li Z, Li C, Xu S, Wang G, Yu J, Zhang C, Man B. Role of Graphene in Constructing Multilayer Plasmonic SERS Substrate with Graphene/AgNPs as Chemical Mechanism-Electromagnetic Mechanism Unit. Nanomaterials (Basel) 2020; 10:nano10122371. [PMID: 33260554 PMCID: PMC7760367 DOI: 10.3390/nano10122371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/27/2020] [Accepted: 11/27/2020] [Indexed: 12/29/2022]
Abstract
Graphene–metal substrates have received widespread attention due to their superior surface-enhanced Raman scattering (SERS) performance. The strong coupling between graphene and metal particles can greatly improve the SERS performance and thus broaden the application fields. The way in which to make full use of the synergistic effect of the hybrid is still a key issue to improve SERS activity and stability. Here, we used graphene as a chemical mechanism (CM) layer and Ag nanoparticles (AgNPs) as an electromagnetic mechanism (EM) layer, forming a CM–EM unit and constructing a multi-layer hybrid structure as a SERS substrate. The improved SERS performance of the multilayer nanostructure was investigated experimentally and in theory. We demonstrated that the Raman enhancement effect increased as the number of CM–EM units increased, remaining nearly unchanged when the CM–EM unit was more than four. The limit of detection was down to 10−14 M for rhodamine 6G (R6G) and 10−12 M for crystal violet (CV), which confirmed the ultrahigh sensitivity of the multilayer SERS substrate. Furthermore, we investigated the reproducibility and thermal stability of the proposed multilayer SERS substrate. On the basis of these promising results, the development of new materials and novel methods for high performance sensing and biosensing applications will be promoted.
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Affiliation(s)
- Lu Liu
- Collaborative Innovation Center of Light Manipulations and Applications, School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250358, China; (L.L.); (S.H.); (X.Z.); (C.L.); (Z.L.); (C.L.); (G.W.); (J.Y.)
| | - Shuting Hou
- Collaborative Innovation Center of Light Manipulations and Applications, School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250358, China; (L.L.); (S.H.); (X.Z.); (C.L.); (Z.L.); (C.L.); (G.W.); (J.Y.)
| | - Xiaofei Zhao
- Collaborative Innovation Center of Light Manipulations and Applications, School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250358, China; (L.L.); (S.H.); (X.Z.); (C.L.); (Z.L.); (C.L.); (G.W.); (J.Y.)
| | - Chundong Liu
- Collaborative Innovation Center of Light Manipulations and Applications, School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250358, China; (L.L.); (S.H.); (X.Z.); (C.L.); (Z.L.); (C.L.); (G.W.); (J.Y.)
| | - Zhen Li
- Collaborative Innovation Center of Light Manipulations and Applications, School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250358, China; (L.L.); (S.H.); (X.Z.); (C.L.); (Z.L.); (C.L.); (G.W.); (J.Y.)
| | - Chonghui Li
- Collaborative Innovation Center of Light Manipulations and Applications, School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250358, China; (L.L.); (S.H.); (X.Z.); (C.L.); (Z.L.); (C.L.); (G.W.); (J.Y.)
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China;
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstraße 20, 01069 Dresden, Germany
| | - Shicai Xu
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China;
| | - Guilin Wang
- Collaborative Innovation Center of Light Manipulations and Applications, School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250358, China; (L.L.); (S.H.); (X.Z.); (C.L.); (Z.L.); (C.L.); (G.W.); (J.Y.)
| | - Jing Yu
- Collaborative Innovation Center of Light Manipulations and Applications, School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250358, China; (L.L.); (S.H.); (X.Z.); (C.L.); (Z.L.); (C.L.); (G.W.); (J.Y.)
| | - Chao Zhang
- Collaborative Innovation Center of Light Manipulations and Applications, School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250358, China; (L.L.); (S.H.); (X.Z.); (C.L.); (Z.L.); (C.L.); (G.W.); (J.Y.)
- Correspondence: (C.Z.); (B.M.)
| | - Baoyuan Man
- Collaborative Innovation Center of Light Manipulations and Applications, School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250358, China; (L.L.); (S.H.); (X.Z.); (C.L.); (Z.L.); (C.L.); (G.W.); (J.Y.)
- Correspondence: (C.Z.); (B.M.)
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Yu J, Yang M, Li Z, Liu C, Wei Y, Zhang C, Man B, Lei F. Hierarchical Particle-In-Quasicavity Architecture for Ultratrace In Situ Raman Sensing and Its Application in Real-Time Monitoring of Toxic Pollutants. Anal Chem 2020; 92:14754-14761. [DOI: 10.1021/acs.analchem.0c03375] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jing Yu
- College of Chemistry, Chemical Engineering and Materials Science, Institute of Biomedical Sciences, Shandong Normal University, Jinan 250014, P.R. China
- School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P.R. China
| | - Maosen Yang
- School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P.R. China
| | - Zhen Li
- School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P.R. China
| | - Chundong Liu
- School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P.R. China
| | - Yisheng Wei
- School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P.R. China
| | - Chao Zhang
- School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P.R. China
| | - Baoyuan Man
- School of Physics and Electronics, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P.R. China
| | - Fengcai Lei
- College of Chemistry, Chemical Engineering and Materials Science, Institute of Biomedical Sciences, Shandong Normal University, Jinan 250014, P.R. China
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Tian Y, Wei H, Xu Y, Sun Q, Man B, Liu M. Influence of SERS Activity of SnSe 2 Nanosheets Doped with Sulfur. Nanomaterials (Basel) 2020; 10:nano10101910. [PMID: 32987912 PMCID: PMC7600932 DOI: 10.3390/nano10101910] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 11/16/2022]
Abstract
The application of 2D semiconductor nanomaterials in the field of SERS is limited due to its weak enhancement effect and the unclear enhancement mechanism. In this study, we changed the surface morphology and energy level structure of 2D SnSe2 nanosheets using different amounts of S dopant. This caused the vibration coupling of the substrate and the adsorbed molecules and affects the SERS activities of the SnSe2 nanosheets. SERS performance of the 2D semiconductor substrate can effectively be improved by suitable doping, which can effectively break the limitation of 2D semiconductor compounds in SERS detection and will have very important significance in the fields of chemical, biological, and materials sciences. In this work, the intensities of SERS signals for R6G molecules on SnSe0.93S0.94 are 1.3 to 1.7 times stronger than those on pure SnSe2 substrate. It not only provides a new way to effectively improve the SERS activity of a semiconductor SERS substrates but also helps to design more efficient and stable semiconductor SERS substrates for practical application.
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Affiliation(s)
- Yuan Tian
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China; (Y.T.); (H.W.); (Y.X.); (Q.S.); (B.M.)
| | - Haonan Wei
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China; (Y.T.); (H.W.); (Y.X.); (Q.S.); (B.M.)
| | - Yujie Xu
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China; (Y.T.); (H.W.); (Y.X.); (Q.S.); (B.M.)
| | - Qianqian Sun
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China; (Y.T.); (H.W.); (Y.X.); (Q.S.); (B.M.)
| | - Baoyuan Man
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China; (Y.T.); (H.W.); (Y.X.); (Q.S.); (B.M.)
- Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, China
| | - Mei Liu
- School of Physics and Electronics, Shandong Normal University, Jinan 250038, China; (Y.T.); (H.W.); (Y.X.); (Q.S.); (B.M.)
- Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, China
- Correspondence:
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Wei Q, Han X, Zhang H, Yang C, Zhang C, Gao J, Man B, Xu S. CVD-Bi 2Te 3 as a saturable absorber for various solitons in a mode-locked Er-doped fiber laser. Appl Opt 2020; 59:7792-7800. [PMID: 32976449 DOI: 10.1364/ao.397625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 07/16/2020] [Indexed: 06/11/2023]
Abstract
In this work, we report about high energy and various solitons' operation by using high-efficiency topological insulator bismuth telluride (Bi2Te3) nanofilms as broadband saturable absorbers in the passively mode-locked Er-doped fiber laser. The Bi2Te3 film was successfully synthesized by chemical vapor deposition (CVD). Excellent characteristics of the dark-bright pulse pairs, bright pulses, and multiharmonics have been investigated experimentally by adjusting the polarization state. At the same time, the maximum average output power was 40.18 mW, and the single-pulse energy was 20.91 nJ. As we all know, it is the various solitons of the first generation with large pulse energy in an Er-doped fiber laser with Bi2Te3 as saturable absorber. The experimental results show that CVD Bi2Te3 can be used as an excellent candidate in mode-locked fiber lasers.
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Chen S, Sun Y, Xia Y, Lv K, Man B, Yang C. Donor effect dominated molybdenum disulfide/graphene nanostructure-based field-effect transistor for ultrasensitive DNA detection. Biosens Bioelectron 2020; 156:112128. [DOI: 10.1016/j.bios.2020.112128] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/25/2020] [Accepted: 02/27/2020] [Indexed: 02/08/2023]
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Li Z, Li C, Yu J, Li Z, Zhao X, Liu A, Jiang S, Yang C, Zhang C, Man B. Aluminum nanoparticle films with an enhanced hot-spot intensity for high-efficiency SERS. Opt Express 2020; 28:9174-9185. [PMID: 32225529 DOI: 10.1364/oe.389886] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 03/06/2020] [Indexed: 06/10/2023]
Abstract
The weak plasmonic coupling intensity in an aluminum (Al) nanostructure has limited potential applications in excellent low-cost surface-enhanced Raman scattering (SERS) substrates and light harvesting. In this report, we aim to elevate the plasmonic coupling intensity by fabricating an Al nanoparticle (NP)-film system. In the system, the Al NP are fabricated directly on different Al film layers, and the nanoscale-thick alumina interlayer obtained between neighboring Al films acts as natural dielectric gaps. Interestingly, as the number of Al film layers increase, the plasmonic couplings generated between the Al NP and Al film increase as well. It is demonstrated that the confined gap plasmon modes stimulated in the nanoscale-thick alumina region between the adjacent Al films contribute significantly to elevating the plasmonic coupling intensity. The finite-difference time-domain (FDTD) method is used to carry out the simulations and verifies this result.
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Gao X, Zhang H, Fan X, Zhang C, Sun Y, Liu C, Li Z, Jiang S, Man B, Yang C. Toward the highly sensitive SERS detection of bio-molecules: the formation of a 3D self-assembled structure with a uniform GO mesh between Ag nanoparticles and Au nanoparticles. Opt Express 2019; 27:25091-25106. [PMID: 31510388 DOI: 10.1364/oe.27.025091] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
We report a structure to form a hybrid system in which a mesh is sandwiched between Au nanoparticles (AuNPs) and Ag nanoparticles (AgNPs). This self-assembly method uses smaller and denser AgNPs "hot spots" that are spin-coated on a AuNPs@GO mesh nanostructure formed by the reaction of GO@MoS2 and HAuCl4 to form AuNPs@GO mesh@AgNPs SERS substrates. Sub-40-nm mesh and 10-nm gaps ensure the landing sites and spacing of the AgNPs. Consequently, the design integrates the strong plasmonic effects of AgNPs and AuNPs with the biological compatibility of the GO mesh. Crystal violet (CV) as low as 10-15 M can be detected, which confirms the ultrahigh sensitivity of AuNPs@GO mesh@AgNPs. Furthermore, the reproducibility, stability, and finite-difference time-domain (FDTD) simulations confirm the value of this SERS substrate. This material can be used for label-free DNA detection, and the AuNPs@GO mesh@AgNPs substrate facilitated single-molecule DNA detection limits.
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Yu J, Guo Y, Wang H, Su S, Zhang C, Man B, Lei F. Quasi Optical Cavity of Hierarchical ZnO Nanosheets@Ag Nanoravines with Synergy of Near- and Far-Field Effects for in Situ Raman Detection. J Phys Chem Lett 2019; 10:3676-3680. [PMID: 31204810 DOI: 10.1021/acs.jpclett.9b01390] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The vertically interlaced hierarchical structure (HS) of ZnO nanosheets (NSs)@Ag nanoravines (NRs) as a quasi optical cavity (QOC) for Raman enhancement has been studied experimentally and theoretically in this work. A novel synergism of near- and far-field effects of Ag NRs is facilitated by the multiple oscillation of light inside the ZnO QOC, providing wide distributions of "hot spots" in a large space. The "spatial hot spots" in the HS bring reliable signal collection in in situ Raman detection. Without any specific materials and methods adopted, this HS provides researchers a new way to adjust the light in the fields of Raman enhancement.
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Affiliation(s)
- Jing Yu
- College of Chemistry, Chemical Engineering and Materials Science, Institute of Biomedical Sciences , Shandong Normal University , Jinan 250014 , P.R. China
- School of Physics and Electronics, Institute of Materials and Clean Energy , Shandong Normal University , Jinan 250014 , P.R. China
| | - Yu Guo
- School of Physics and Electronics, Institute of Materials and Clean Energy , Shandong Normal University , Jinan 250014 , P.R. China
| | - Huijie Wang
- School of Physics and Information Engineering , Shanxi Normal University , Linfen 041004 , P.R. China
| | - Shuai Su
- College of Animal Science and Technology , Shandong Agricultural University , Taian 271018 , P.R. China
| | - Chao Zhang
- School of Physics and Electronics, Institute of Materials and Clean Energy , Shandong Normal University , Jinan 250014 , P.R. China
| | - Baoyuan Man
- School of Physics and Electronics, Institute of Materials and Clean Energy , Shandong Normal University , Jinan 250014 , P.R. China
| | - Fengcai Lei
- College of Chemistry, Chemical Engineering and Materials Science, Institute of Biomedical Sciences , Shandong Normal University , Jinan 250014 , P.R. China
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Sun Y, Peng Z, Li H, Wang Z, Mu Y, Zhang G, Chen S, Liu S, Wang G, Liu C, Sun L, Man B, Yang C. Suspended CNT-Based FET sensor for ultrasensitive and label-free detection of DNA hybridization. Biosens Bioelectron 2019; 137:255-262. [DOI: 10.1016/j.bios.2019.04.054] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 04/13/2019] [Accepted: 04/29/2019] [Indexed: 12/12/2022]
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Guo Q, Pan J, Li D, Shen Y, Han X, Gao J, Man B, Zhang H, Jiang S. Versatile Mode-Locked Operations in an Er-Doped Fiber Laser with a Film-Type Indium Tin Oxide Saturable Absorber. Nanomaterials (Basel) 2019; 9:nano9050701. [PMID: 31060316 PMCID: PMC6567301 DOI: 10.3390/nano9050701] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 04/29/2019] [Accepted: 04/30/2019] [Indexed: 12/12/2022]
Abstract
We demonstrate the generation of versatile mode-locked operations in an Er-doped fiber laser with an indium tin oxide (ITO) saturable absorber (SA). As an epsilon-near-zero material, ITO has been only used to fashion a mode-locked fiber laser as an ITO nanoparticle-polyvinyl alcohol SA. However, this type of SA cannot work at high power or ensure that the SA materials can be transmitted by the light. Thus, we covered the end face of a fiber with a uniform ITO film using the radio frequency magnetron sputtering technology to fabricate a novel ITO SA. Using this new type of SA, single-wavelength pulses, dual-wavelength pulses, and triple-wavelength multi-pulses were achieved easily. The pulse durations of these mode-locked operations were 1.67, 6.91, and 1 ns, respectively. At the dual-wavelength mode-locked state, the fiber laser could achieve an output power of 2.91 mW and a pulse energy of 1.48 nJ. This study reveals that such a proposed film-type ITO SA has excellent nonlinear absorption properties, which can promote the application of ITO film for ultrafast photonics.
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Affiliation(s)
- Quanxin Guo
- Collaborative Innovation Center of Light Manipulations and Applications in Universities of Shandong, Shandong Normal University, Jinan 250014, China.
| | - Jie Pan
- Collaborative Innovation Center of Light Manipulations and Applications in Universities of Shandong, Shandong Normal University, Jinan 250014, China.
| | - Dengwang Li
- Collaborative Innovation Center of Light Manipulations and Applications in Universities of Shandong, Shandong Normal University, Jinan 250014, China.
- Shandong Key Laboratory of Medical Physics and Image Processing and Shandong Provincial Engineering and Technical Center of Light Manipulations, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China.
| | - Yiming Shen
- Collaborative Innovation Center of Light Manipulations and Applications in Universities of Shandong, Shandong Normal University, Jinan 250014, China.
| | - Xile Han
- Collaborative Innovation Center of Light Manipulations and Applications in Universities of Shandong, Shandong Normal University, Jinan 250014, China.
| | - Jinjuan Gao
- Collaborative Innovation Center of Light Manipulations and Applications in Universities of Shandong, Shandong Normal University, Jinan 250014, China.
| | - Baoyuan Man
- Collaborative Innovation Center of Light Manipulations and Applications in Universities of Shandong, Shandong Normal University, Jinan 250014, China.
| | - Huanian Zhang
- Collaborative Innovation Center of Light Manipulations and Applications in Universities of Shandong, Shandong Normal University, Jinan 250014, China.
- Shandong Provincial Key Laboratory of Optics and Photonic Device, Jinan 250014, China.
| | - Shouzhen Jiang
- Collaborative Innovation Center of Light Manipulations and Applications in Universities of Shandong, Shandong Normal University, Jinan 250014, China.
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Yu J, Wei Y, Wang H, Zhang C, Wei Y, Wang M, Man B, Lei F. In situ detection of trace pollutants: a cost-effective SERS substrate of blackberry-like silver/graphene oxide nanoparticle cluster based on quick self-assembly technology. Opt Express 2019; 27:9879-9894. [PMID: 31045136 DOI: 10.1364/oe.27.009879] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 03/11/2019] [Indexed: 06/09/2023]
Abstract
To realize fast detection of trace hazardous chemicals, a SERS substrate with the structure of a blackberry-like silver/graphene oxide nanoparticle cluster (Ag/GO NPC) has been designed and prepared through a quick capillarity-assistant self-assembly technology in this paper. Benefitting from the abundant "hot spots" and active oxygen sites brought by this Ag/GO NPC, the substrate shows good Raman performance for malachite green (MG), a common abusive germicide in aquaculture, with lowest limit of detection below 0.1 µg/L (3.48 × 10-10 mol/L). Detailed analyses are taken on both the formation process and enhancement mechanism of this SERS substrate, and the finite-difference time-domain simulations are utilized as well to prove our hypotheses. Further constructing this structure on polyethylene terephthalate (PET) film, a translucent flexible SERS substrate can be obtained, realizing a fast in situ detection of trace MG in the fishpond subsequently. In consideration of the facile preparation process, good SERS enhancement and affordable materials (PET, Cu, Ag and GO, etc.), this substrate presents high cost performance and a promising application prospect.
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Han X, Zhang H, Zhang C, Li C, Guo Q, Gao J, Jiang S, Man B. Large-energy mode-locked ytterbium-doped linear-cavity fiber laser based on chemical vapor deposition-Bi 2Se 3 as a saturable absorber. Appl Opt 2019; 58:2695-2701. [PMID: 31045075 DOI: 10.1364/ao.58.002695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 03/11/2019] [Indexed: 06/09/2023]
Abstract
We reported on the generation of pulse bunch and large-energy dark pulses in a mode-locked ytterbium-doped linear-cavity fiber laser based on Bi2Se3 as a saturable absorber (SA). Bi2Se3 nanosheets were successfully synthesized by the chemical vapor deposition (CVD) method and transferred to the end facet of a fiber connector for the proposed SA. Its saturation intensity and modulation depth were measured to be 52 MW/cm2 and 14.5%, respectively. By inserting the Bi2Se3-based SA into the Yb-doped all-fiber linear cavity, stable pulse bunches were observed. In addition, dark soliton operation with a maximum average output power of 32.6 mW and a pulse energy of 61.8 nJ were also achieved. To the best of our knowledge, this is the first demonstration of a dark soliton within a linear cavity with much larger pulse energy than previous works. Our study fully indicated that CVD-Bi2Se3 could be an excellent SA for achieving large-energy pulse operations.
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Gong W, Jiang S, Li Z, Li C, Xu J, Pan J, Huo Y, Man B, Liu A, Zhang C. Experimental and theoretical investigation for surface plasmon resonance biosensor based on graphene/Au film/D-POF. Opt Express 2019; 27:3483-3495. [PMID: 30732368 DOI: 10.1364/oe.27.003483] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 01/14/2019] [Indexed: 05/18/2023]
Abstract
A D-shape plastic optical fiber (D-POF) surface plasmon resonance (SPR) biosensor based on the graphene/Au film (G/Au) was proposed and experimentally demonstrated for detection of DNA hybridization process. To improve the detection performance of SPR sensors, the Physical Vapor Deposition (PVD) method was used to evaporate the Au film directly onto the graphene grown on copper foil, and the Au film acted as a role of traditional Polymethyl Methacrylate (PMMA). The process made graphene and Au film form seamless contact. Next, the G/Au was transferred onto the D-shape fiber together. We explored the G/Au SPR sensor by using the finite element method (FEM) and obtained the optimum materials thickness to form configuration. Compared to other plastic optical fiber experiments, the proposed sensor's sensitivity was improved effectively and calculated as 1227 nm/RIU in a range of glucose solution. Meanwhile, our proposed sensor successfully distinguishes hybridization and single nucleotide polymorphisms (SNP) by observing the resonance wavelength change. It also exhibits a satisfactory linear response (R2 = 0.996) to the target DNA liquids with respective concentrations of 0.1nM to1µM, which shows this method's wide potential in medical diagnostics.
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Yang W, Li Z, Lu Z, Yu J, Huo Y, Man B, Pan J, Si H, Jiang S, Zhang C. Graphene-Ag nanoparticles-cicada wings hybrid system for obvious SERS performance and DNA molecular detection. Opt Express 2019; 27:3000-3013. [PMID: 30732328 DOI: 10.1364/oe.27.003000] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/04/2019] [Indexed: 06/09/2023]
Abstract
In recent years, biomaterials have increasingly attracted attention on surface-enhanced Raman spectroscopy (SERS) due to their well Raman performance while metal particles are combined with biological substrates. Therefore, we propose an environmentally friendly substrate based on silver-plated cicada wings with seamless graphene layer (Gr-AgNPs-C.w.), which can be prepared with a simple and inexpensive method. Compared with AgNPs-C.w., Gr-AgNPs-C.w. hybrids show better SERS performance with high sensitivity, good uniformity and good stability with R6G detection. The minimum detected concentration can reach 10-15 M, and the value of R2 can reach 0.996, respectively. Theoretical simulation demonstrates the situation of electromagnetic field through COMSOL software. In addition, due to the affinity of graphene for biomolecules, we can successfully detect the DNA biomolecules through a simple process. Therefore, this cheap and efficient natural SERS substrate has great potential for a considerable number of biochemical SERS applications and can broaden the way in which multiple SERS platforms derived from other natural materials are prepared.
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Yang Y, Liu Y, Man B, Zhao M, Li W. Tuning the electronic and magnetic properties of MoS2 nanotubes with vacancy defects. RSC Adv 2019; 9:17203-17210. [PMID: 35519879 PMCID: PMC9064463 DOI: 10.1039/c8ra08981g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 04/05/2019] [Indexed: 11/21/2022] Open
Abstract
The effects of vacancy defects on the electronic and magnetic properties of MoS2 nanotubes were studied by DFT calculations. The rich semiconducting, metallic, and half-metallic properties make them suitable for electronic and spintronic devices.
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Affiliation(s)
- Yanmei Yang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Yang Liu
- School of Physics
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- China
| | - Baoyuan Man
- College of Physics and Electronics
- Shandong Normal University
- Jinan 250014
- China
| | - Mingwen Zhao
- School of Physics
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- China
| | - Weifeng Li
- School of Physics
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- China
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38
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Liu M, Shi Y, Zhang G, Zhang Y, Wu M, Ren J, Man B. Surface-Enhanced Raman Spectroscopy of Two-Dimensional Tin Diselenide Nanoplates. Appl Spectrosc 2018; 72:1613-1620. [PMID: 30063384 DOI: 10.1177/0003702818794685] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) is a powerful spectroscopy technique to detect and characterize molecules at a very low concentration level. The two-dimensional (2D) semi-conductor layered material, tin diselenide (SnSe2), is used as a new substrate for enhancing the Raman signals of adsorbed molecules. Three kinds of molecules-Rhodamine 6G (R6G), crystal violet (CV), and methylene blue (MB)-are used as probe molecules to evaluate the SERS performance of SnSe2. The Raman signals of different molecules can be enhanced by SnSe2 nanoplates (NPs). The distinguishable Raman signal of R6G molecules can be obtained for adsorbent concentrations as low as 10-17 mol/L. Based on a detailed analysis of the bandgap structure and opto-electrical properties of SnSe2 NPs, we discuss the process of charge transfer and the Raman enhancement mechanism of SnSe2 NP. The high Raman sensitivity of SnSe2 NPs is related to the charge transfer between molecules and SnSe2, 2D layered structure, and indirect bandgap of few-layered SnSe2. The research results will help to expand the application of SnSe2 in microanalysis, improve the measurement accuracy of SERS, and possibly find use in optoelectronic device integration.
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Affiliation(s)
- Mei Liu
- 1 School of Physics and Electronics, Shandong Normal University, Jinan, China
- 2 Institute of Materials and Clean Energy, Shandong Normal University, Jinan, China
| | - Ying Shi
- 1 School of Physics and Electronics, Shandong Normal University, Jinan, China
- 3 College of Science, China University of Petroleum, Beijing, China
| | - Guangping Zhang
- 1 School of Physics and Electronics, Shandong Normal University, Jinan, China
- 2 Institute of Materials and Clean Energy, Shandong Normal University, Jinan, China
| | - Yongheng Zhang
- 1 School of Physics and Electronics, Shandong Normal University, Jinan, China
| | - Meimei Wu
- 1 School of Physics and Electronics, Shandong Normal University, Jinan, China
| | - Junfeng Ren
- 1 School of Physics and Electronics, Shandong Normal University, Jinan, China
| | - Baoyuan Man
- 1 School of Physics and Electronics, Shandong Normal University, Jinan, China
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Xu N, Zhang H, Man B. Various large-energy soliton operations within an Er-doped fiber laser with bismuth selenide as a saturable absorber. Appl Opt 2018; 57:8811-8818. [PMID: 30461861 DOI: 10.1364/ao.57.008811] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 09/10/2018] [Indexed: 06/09/2023]
Abstract
Different large-energy mode-locked operations were successfully obtained within a Bi2Se3-based Er-doped fiber laser. First, mode-locked operation with maximum pulse energy of 17.2 nJ and pulse width of 187 ns under a pulse repetition rate of 537.6 kHz was obtained under the pump power of 680 mW. In addition, the characteristics of dark solitons and soliton rains, which also exhibit large pulse energies, have been investigated experimentally. Our results fully proved that Bi2Se3 was an excellent candidate for investigating various mode-locked operations with large pulse energy due to its high nonlinear effect and high damage threshold.
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Zhao X, Yu J, Zhang Z, Li C, Li Z, Jiang S, Pan J, Liu A, Zhang C, Man B. Heterogeneous and cross-distributed metal structure hybridized with MoS 2 as high-performance flexible SERS substrate. Opt Express 2018; 26:23831-23843. [PMID: 30184879 DOI: 10.1364/oe.26.023831] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 08/22/2018] [Indexed: 06/08/2023]
Abstract
The heterogeneous metal nanostructures have attracted great interest in various applications due to the synergistic effects between two noble metals, especially in surface enhanced Raman scattering (SERS) region. Herein, we prepared a 3D SERS active substrate based on heterogeneous and cross-distributed metal structure hybridized with MoS2by in situ synthesizing gold nanoparticles (AuNPs) on MoS2 membrane. The AuNPs-AgNPs/MoS2/P-Si hybrid SERS substrate were characterized by a scanning electron microscope (SEM), a transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS) to investigate the character and the content of elements. In virtue of the heterogeneous and cross-distributed structure and ultra-narrow interparticle gap generating strong electric fields enhancement, the ultra-low concentration of probe molecule were detected (the LOD of 10-12 M for R6G and CV, 10-11 M for MG), serving the optimal SERS performance. The excellent uniformity and reproducibility were achieved by the proposed substrate. Moreover, the flexible MoS2/AuNPs-AgNPs/PMMA pyramidal SERS substrate was applied to detect melamine molecule in liquid milk (the LOD reached 10-9 M), which revealed great potential to be an outstanding SERS substrate for biological and chemical detection.
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Zhang K, Liu X, Man B, Yang C, Zhang C, Liu M, Zhang Y, Liu L, Chen C. Label-free and stable serum analysis based on Ag-NPs/PSi surface-enhanced Raman scattering for noninvasive lung cancer detection. Biomed Opt Express 2018; 9:4345-4358. [PMID: 30615731 PMCID: PMC6157787 DOI: 10.1364/boe.9.004345] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/25/2018] [Accepted: 08/10/2018] [Indexed: 05/29/2023]
Abstract
Surface-enhanced Raman scattering (SERS) has a broad application prospect in the field of tumor detection owing to its ultrahigh detective sensitivity. However, SERS analysis of serum remain a challenge in terms of repeatability and stability due to the maldistribution of the silver nanoparticles (Ag-NPs)-serum. With the aim to make up for this shortcoming, we report a new method for obtaining stable serum Raman signals utilizing the ordered arrays of pyramidal silicon (PSi) and Ag-NPs. We prove the practicability of this method by detecting the samples of serum from 50 lung cancer patients and 50 normal healthy people. Principal component analysis (PCA) of the serum SERS spectra shows that the spectral data of the two sample groups can form obvious and completely separated clusters. The receiver operating characteristic curve provides the sensitivity (100%) and specificity (90%) from the PCA-LDA method. This research indicates that a stable and label-free analysis technique of serum SERS based on Ag-NPs/PSi and PCA-LDA is promising for noninvasive lung cancer diagnoses.
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Affiliation(s)
- Kun Zhang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Xijun Liu
- Department of Radiation Oncology, Shandong Cancer Hospital Affiliated with Shandong University, Shandong Academy of Medical Sciences, Jinan 250117, China
| | - Baoyuan Man
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Cheng Yang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Chao Zhang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Mei Liu
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Yongheng Zhang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Lisheng Liu
- Key Laboratory of Animal Resistance Research, College of Life Science, Shandong Normal University, Jinan 250014, China
| | - Chuansong Chen
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
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Guo Y, Yu J, Li C, Li Z, Pan J, Liu A, Man B, Wu T, Xiu X, Zhang C. SERS substrate based on the flexible hybrid of polydimethylsiloxane and silver colloid decorated with silver nanoparticles. Opt Express 2018; 26:21784-21796. [PMID: 30130880 DOI: 10.1364/oe.26.021784] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Various flexible SERS sensors have attracted widespread concern in performing the direct identification of the analytes adsorbed on arbitrary surfaces. Here, a sample method was proposed to integrate plasmonic nanoparticles into polydimethylsiloxane (PDMS) to fabricate flexible substrate for the decoration of silver nanoparticles (AgNPs). The flexible SERS sensor based on AgNPs/AgNPs-PDMS offers highly sensitive Raman detection with enhancement factor up to 8.3 × 109, which can be attributed to the integrative effects from both the increase of the light absorption of the embedded AgNPs in PDMS substrate and the EM enhancement from the adjacent top-top, bottom-bottom and top-bottom AgNPs. After undergoing the cyclic mechanical deformation, the SERS substrate still maintains high mechanical stability and stable SERS signals. However, upon stretching the flexible substrate, there was an amusing phenomenon that SERS signals can be highly increased, which results from that the reduction of lateral nanogaps between top and bottom of the PDMS boundary strengthens the trigger of the plasmon coupling as demonstrated by the simulated result. This result reveals that the tuning and the coupling of the electromagnetic fields can be effectively controlled by the macroscopic mechanical solicitation. That will have an important significance for practical applications in strain-dependent sensors and detectors.
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Lu Z, Si H, Li Z, Yu J, Liu Y, Feng D, Zhang C, Yang W, Man B, Jiang S. Sensitive, reproducible, and stable 3D plasmonic hybrids with bilayer WS 2 as nanospacer for SERS analysis. Opt Express 2018; 26:21626-21641. [PMID: 30130866 DOI: 10.1364/oe.26.021626] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 07/25/2018] [Indexed: 06/08/2023]
Abstract
The highly enhanced local electromagnetic field occurring through nanometer gap between the plamonic nanostructures provides the dominant contribution in surface enhancement Raman scattering (SERS) enhancement. Thence, we designed the remarkable SERS platform (AuNPs/WS2@AuNPs hybrids) by introducing bilayer WS2 film as the precise nanospacer. Bilayer WS2 film can realize the facile and tight combination with AuNPs via the thermal decomposition approach. Dense three-dimension (3D) hot spots provided by this hybrid plasmonic nanostructures are responsible for the extremely satisfying SERS performances. Using rhodamine 6G (R6G) as the probe molecules, the AuNPs/WS2@AuNPs hybrids perform the excellent sensitivity with the minimum detectable concentration as low as 10-11 M. Uniform and reproducible SERS signals illustrate that the synthesized SERS hybrids perform the splendid spot-to-spot reproducibility (RSD~5.4%) and substrate-to-substrate reproducibility (RSD~5.7%). The stability of AuNPs and the protection of WS2 film endow this hybrid plasmonic nanostructures with the brilliant anti-oxidation stability. Moreover, the enhanced electric field distribution simulated with the COMSOL software proves the remarkable SERS performance in theory. Therefore, AuNPs/WS2@AuNPs substrate not only widens the SERS research filed of WS2, but also shows vast potential as excellent SERS sensor for practical applicability.
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Yang M, Yu J, Jiang S, Zhang C, Sun Q, Wang M, Zhou H, Li C, Man B, Lei F. High stability luminophores: fluorescent CsPbX 3 (X = Cl, Br and I) nanofiber prepared by one-step electrospinning method. Opt Express 2018; 26:20649-20660. [PMID: 30119373 DOI: 10.1364/oe.26.020649] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 07/19/2018] [Indexed: 06/08/2023]
Abstract
The novel fluorescent nanofiber membranes of CsPbX3 (FNMs/CPX, X = Cl, Br, I) with a wide photoluminescence range from 405 nm to 675 nm are fabricated by a one-step electrospinning method in this paper. Owing to the polymer cladding, these FNMs/CPX show much better thermal and humid stability compared to the common CsPbX3 particles, and the corresponding white light-emitting diode prepared by them also exhibits excellent optical properties. Without adopting any complicated processes, this method opens up a brand new way for the perovskite materials using in lighting and display fields.
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Zhang Y, Shi Y, Wu M, Zhang K, Man B, Liu M. Synthesis and Surface-Enhanced Raman Scattering of Ultrathin SnSe₂ Nanoflakes by Chemical Vapor Deposition. Nanomaterials (Basel) 2018; 8:nano8070515. [PMID: 29996504 PMCID: PMC6070886 DOI: 10.3390/nano8070515] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/02/2018] [Accepted: 07/06/2018] [Indexed: 11/16/2022]
Abstract
As a new atomically layered, two-dimensional material, tin (IV) diselenide (SnSe2) has attracted extensive attention due to its compelling application in electronics and optoelectronics. However, the great challenge of impurities and the preparation of high-quality ultrathin SnSe2 nanoflakes has hindered far-reaching research and SnSe2 practical applications so far. Therefore, a facile chemical vapor deposition (CVD) method is employed to synthesize large-scale ultrathin SnSe2 flakes on mica substrates using SnSe and Se powder as precursors. The structural characteristics and crystalline quality of the product were investigated. Moreover, Raman characterizations indicate that the intensity of A1g peak and Eg peak, and the Raman shift of Eg are associated with the thickness of the SnSe2 nanoflakes. The ultrathin SnSe2 nanoflakes show a strong surface-enhanced Raman spectroscopy (SERS) activity for Rhodamine 6G (R6G) molecules. Theoretical explanations for the enhancement principle based on the chemical enhancement mechanism and charge transfer diagram between R6G and SnSe2 are provided. The results demonstrate that the ultrathin SnSe2 flakes are high-quality single crystal and can be exploited for microanalysis detection and optoelectronic application.
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Affiliation(s)
- Yongheng Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Ying Shi
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Meimei Wu
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Kun Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Baoyuan Man
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Mei Liu
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
- Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, China.
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Yang C, Xu Y, Wang M, Li T, Huo Y, Yang C, Man B. Multifunctional paper strip based on GO-veiled Ag nanoparticles with highly SERS sensitive and deliverable properties for high-performance molecular detection. Opt Express 2018; 26:10023-10037. [PMID: 29715945 DOI: 10.1364/oe.26.010023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The development of paper-based SERS substrates that can allow multi-component detection in real-word scenarios is of great value for applications in molecule detection under complex conditions. Here, a multifunctional SERS-based paper sensing substrate has been developed through the uniform patterning of high-density arrays of GO-isolated Ag nanoparticles on the hydrophilic porous cellulose paper strip (GO@AgNP@paper). Wet-chemical synthesis was used to provide the cover of SERS hot spots on any part of the paper, not just limited surface deposition. In virtue of the inherent ability of paper to deliver analytes by the capillary force, the detection ability of the GO@AgNP@paper substrate was greatly promoted, allowing as low as 10-19M R6G detection from microliter-volume (50 μL) samples. For the components with different polarity, the paper substrate can be used as an all-in-one machine to achieve the integration of separation and high-sensitive detection for ultralow mixture components, which improves the practical application value of SERS-based paper devices.
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Ming N, Tao S, Yang W, Chen Q, Sun R, Wang C, Wang S, Man B, Zhang H. Mode-locked Er-doped fiber laser based on PbS/CdS core/shell quantum dots as saturable absorber. Opt Express 2018; 26:9017-9026. [PMID: 29715860 DOI: 10.1364/oe.26.009017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 03/13/2018] [Indexed: 06/08/2023]
Abstract
Previously, PbS/CdS core/shell quantum dots with excellent optical properties have been widely used as light-harvesting materials in solar cell and biomarkers in bio-medicine. However, the nonlinear absorption characteristics of PbS/CdS core/shell quantum dots have been rarely investigated. In this work, PbS/CdS core/shell quantum dots were successfully employed as nonlinear saturable absorber (SA) for demonstrating a mode-locked Er-doped fiber laser. Based on a film-type SA, which was prepared by incorporating the quantum dots with the polyvinyl alcohol (PVA), mode-locked Er-doped operation with a pulse width of 54 ps and a maximum average output power of 2.71 mW at the repetition rate of 3.302 MHz was obtained. Our long-time stable results indicate that the CdS shell can effectively protect the PbS core from the effect of photo-oxidation and PbS/CdS core/shell quantum dots were efficient SA candidates for demonstrating pulse fiber lasers due to its tunable absorption peak and excellent saturable absorption properties.
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Li Z, Jiang S, Huo Y, Ning T, Liu A, Zhang C, He Y, Wang M, Li C, Man B. 3D silver nanoparticles with multilayer graphene oxide as a spacer for surface enhanced Raman spectroscopy analysis. Nanoscale 2018; 10:5897-5905. [PMID: 29546897 DOI: 10.1039/c7nr09276h] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
We report a three-dimensional (3D) SERS substrate with different numbers of silver nanoparticle (Ag NP) layers using multilayer graphene oxide (GO) as a spacer. The SERS performance of the 3D nanostructure was investigated and it was found that the SERS effect increased as the number of Ag NP layers increased, and showed almost no change for more than four layers. We found that the SERS performance of the 3D nanostructures can be mainly attributed to the topmost hot spots which are closely related to the Ag NP layers in the 3D nanostructure. Furthermore, we explored 3D nanostructures with different Ag NP layers using the finite difference time domain method (FDTD). The 3D SERS substrates also exhibit excellent detection capability. The limit of detection (LOD) was calculated down to 10-15 M for R6G and 10-12 M for CV. In addition, the reproducibility of the 3D SERS substrate was attributed obviously to the increasing number of Ag NP layers. Based on these promising results, the highly sensitive detection of molecules such as malachite green was demonstrated for food safety inspection.
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Affiliation(s)
- Zhen Li
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Shouzhen Jiang
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Yanyan Huo
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Tingyin Ning
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Aihua Liu
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Chao Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Yuan He
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Minghong Wang
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Chonghui Li
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
| | - Baoyuan Man
- School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
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Li C, Liu A, Zhang C, Wang M, Li Z, Xu S, Jiang S, Yu J, Yang C, Man B. Ag gyrus-nanostructure supported on graphene/Au film with nanometer gap for ideal surface enhanced Raman scattering. Opt Express 2017; 25:20631-20641. [PMID: 29041742 DOI: 10.1364/oe.25.020631] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 07/17/2017] [Indexed: 05/23/2023]
Abstract
The physical phenomenon, surface-enhanced Raman scattering (SERS), is mainly based on the local electromagnetic fields enhancement located at the nano-gaps between metal nanostructures attributed to localized surface plasmon resonance. Therefore, nano-gaps are very important for obtaining high-density hot spots and optimal and uniform SERS signals. However, it remains a challenge to form the three-dimensional ultra-narrow nano-gaps. Here, a gyrus-inspired Gyrus-SERS substrate was fabricated with the nanostructure of Ag gyrus/graphene/Au film using an extremely simple method. The lateral and vertical hot spots respectively were obtained from the dense nano-gaps (~3 nm) between gyrus and the coupling of Ag gyrus and Au film in bilayer graphene nano-gaps (0.68 nm), which were demonstrated in experiment and theory. The proposed Gyrus-SERS platform performs an excellent SERS activity (EF~5 × 109), high sensitivity (the minimum detected concentration of R6G and CV respectively is 10-13 and 10-12 M), and outstanding reproducibility (RSD~7.11%). For practical application, the in situ detection of Malachite green (MG) residue on prawn skin was executed using the prepared flexible Gyrus-SERS substrate, which shows the wide potential in food safety field.
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Xu Y, Yang C, Wang M, Pan X, Zhang C, Liu M, Xu S, Jiang S, Man B. Adsorbable and self-supported 3D AgNPs/G@Ni foam as cut-and-paste highly-sensitive SERS substrates for rapid in situ detection of residuum. Opt Express 2017; 25:16437-16451. [PMID: 28789148 DOI: 10.1364/oe.25.016437] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 06/16/2017] [Indexed: 06/07/2023]
Abstract
We have proposed a synthetic approach to produce self-supported and bendable surface-enhanced Raman scattering (SERS)-based 3D chemical sensors with high adsorptivity. Such 3D substrates consist of foam-like graphene macrostructures obtained by template-directed chemical vapour deposition on nickel foams (interconnected 3D scaffold of nickel) and uniform and high-density Ag nanoparticles wrapping around the foam graphene, via seed-mediated in situ growth process. Such 3D AgNPs/G@Ni foam substrates show high-quality SERS performance in terms of Raman signal reproducibility and sensitivity for the analyte, resulting from the high density and homogeneity of "hot spots" on AgNPs/G@Ni foam, multiple cascaded amplication (localized surface plasmon mode and optical standing waves or optical refraction) of incident laser to the 3D foam structures and powerful support from nickel scaffold. Moreover, in virtue of the high adsorptivity and sensitivity of AgNPs/G@Ni foam, the low-concentration crystal violet molecules can be easily traced in the curvilinear fish surface, by simply swabbing the surface to achieve molecules concentration effect in the practical applicability. This work shows promising potential in developing the applications of SERS in the foodstuffs processing and security field.
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