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Wang H, Zhang F, Duan J. Subwavelength Quasi-Periodic Array for Infrared Antireflection. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3520. [PMID: 36234647 PMCID: PMC9565370 DOI: 10.3390/nano12193520] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/15/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
Infrared antireflection of a zinc sulfide (ZnS) surface is important to improve performance of infrared detector systems. In this paper, double-pulse femtosecond laser micro-machining is proposed to fabricate a subwavelength quasi-periodic array (SQA) on ZnS substrate for infrared antireflection. The SQA consisting of approximately 30 million holes within a 2 × 2 cm2 area is uniformly formed in a short time. The double-pulse beam can effectively suppress the surface plasma shielding effect, resulting in obtaining a larger array depth. Further, the SQA depth is tunable by changing pulse energy and pulse delay, and can be used to readily regulate the infrared transmittance spectra as well as hydrophobicity. Additionally, the optical field intensity distributions of the SQA simulated by the rigorous coupled-wave analysis method indicate the modulation effect by the array depth. Finally, the infrared imaging quality captured through an infrared window embedded SQA is evaluated by a self-built infrared detection system.
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Affiliation(s)
- Haoran Wang
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China
| | - Fan Zhang
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China
- School of Automation, Central South University, Changsha 410083, China
| | - Ji’an Duan
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China
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Furletov AA, Apyari VV, Garshev AV, Dmitrienko SG. Prospects for the Use of Analytical Systems Based on Silver Triangular Nanoplates for the Spectrophotometric Determination of Reductants. JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1134/s1061934822100057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Graphene Oxide-Coated Metal–Insulator–Metal SERS Substrates for Trace Melamine Detection. NANOMATERIALS 2022; 12:nano12071202. [PMID: 35407320 PMCID: PMC9002873 DOI: 10.3390/nano12071202] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/27/2022] [Accepted: 03/31/2022] [Indexed: 02/01/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) has long been an ultrasensitive technique for trace molecule detection. However, the development of a sensitive, stable, and reproducible SERS substrate is still a challenge for practical applications. Here, we demonstrate a cost-effective, centimeter-sized, and highly reproducible SERS substrate using the nanosphere lithography technique. It consists of a hexagonally packed Ag metasurface on a SiO2/Au/Si substrate. A seconds-lasting etching process of a self-assembled nanosphere mask manipulates the geometry of the deposited Ag metasurface on the SiO2/Au/Si substrate, which attains the wavelength matching between the optical absorbance of the Ag/SiO2/Au/Si substrate and the excitation laser wavelength as well as the enhancement of Raman signals. By spin-coating a thin layer of graphene oxide on the substrate, a SERS performance with 1.1 × 105 analytical enhancement factor and a limit of detection of 10−9 M for melamine is achieved. Experimental results reveal that our proposed strategy could provide a promising platform for SERS-based rapid trace detection in food safety control and environmental monitoring.
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Dong J, Feng H, Wang X, Chen S, Wang S, Zhang C, Liu Q. Transverse and longitudinal coupling of LSPPs in isolated triangular Al-SiO 2-Al hybrid nanoplates for generation of local electromagnetic fields with enhanced intensity and increased decay time. NANOTECHNOLOGY 2021; 32:505708. [PMID: 34530404 DOI: 10.1088/1361-6528/ac2767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
Achieving a large enhancement of local electromagnetic fields in the ultraviolet waveband is desirable for some applications such as surface-enhanced Raman scattering and surface-enhanced fluorescence. In addition, it is more significant for some applications such as plasmon-enhanced harmonic generation to enhance the intensity of local electromagnetic fields and increase their decay time at the same time. In this paper, using the finite-difference time-domain method, we numerically demonstrate that using the linearly polarized light with a wavelength of 325 nm as the illumination light, an isolated triangular Al-SiO2-Al hybrid nanoplate with optimized geometric parameters can produce a local electric field enhanced by a factor of about 108 at one of its top apexes, and produce two local electric fields enhanced by a factor of about 150 at two transverse dielectric/metal interfaces of one of its longitudinal side edges. Moreover, we also numerically demonstrate that the decay time of enhanced local electric fields produced by the isolated triangular Al-SiO2-Al hybrid nanoplate is about 1.6 times as large as that of enhanced local electric fields produced by an isolated triangular Al nanoplate. These unique properties of the isolated triangular Al-SiO2-Al hybrid nanoplate arise because of both the transverse coupling and the longitudinal coupling of localized surface plasmon polaritons in this structure. Our findings make triangular Al-SiO2-Al hybrid nanoplates very promising for application in many fields such as surface-enhanced Raman scattering and plasmon-enhanced harmonic generation.
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Affiliation(s)
- Jianjie Dong
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, People's Republic of China
| | - Huimin Feng
- University of Chinese Academy of Science, Beijing 100049, People's Republic of China
- School of Astronautics, Beihang University, Beijing 100191, People's Republic of China
| | - Xiaofeng Wang
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, People's Republic of China
- University of Chinese Academy of Science, Beijing 100049, People's Republic of China
| | - Shengyao Chen
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, People's Republic of China
- University of Chinese Academy of Science, Beijing 100049, People's Republic of China
| | - Shu Wang
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, People's Republic of China
- University of Chinese Academy of Science, Beijing 100049, People's Republic of China
| | - Chen Zhang
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, People's Republic of China
- University of Chinese Academy of Science, Beijing 100049, People's Republic of China
| | - Qian Liu
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, People's Republic of China
- University of Chinese Academy of Science, Beijing 100049, People's Republic of China
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Furletov A, Apyari V, Garshev A, Dmitrienko S. A Comparative Study on the Oxidation of Label-Free Silver Triangular Nanoplates by Peroxides: Main Effects and Sensing Applications. SENSORS (BASEL, SWITZERLAND) 2020; 20:s20174832. [PMID: 32867039 PMCID: PMC7506893 DOI: 10.3390/s20174832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/13/2020] [Accepted: 08/25/2020] [Indexed: 06/11/2023]
Abstract
Nowadays, analytical systems based on silver triangular nanoplates (AgTNPs) have been shown as good prospects for chemical sensing. However, they still remain relatively poorly studied as colorimetric probes for sensing various classes of compounds. This study shows that these nanoparticles are capable of being oxidized by peroxides, including both hydrogen peroxide and its organic derivatives. The oxidation was found to result in a decrease in the AgTNPs' local surface plasmon resonance band intensity at 620 nm. This was proposed for peroxide-sensitive spectrophotometric determination. Five peroxides differing in their structure and number of functional groups were tested. Three of them easily oxidized AgTNPs. The effects of a structure of analytes and main exterior factors on the oxidation are discussed. The detection limits of peroxides in the selected conditions increased in the series peracetic acid < hydrogen peroxide < tert-butyl hydroperoxide, coming to 0.08, 1.6 and 24 μmol L-1, respectively. tert-Butyl peroxybenzoate and di-tert-butyl peroxide were found to have no effect on the spectral characteristics of AgTNPs. By the example of hydrogen peroxide, it was found that the determination does not interfere with 100-4000-fold quantities of common inorganic ions. The proposed approach was successfully applied to the analysis of drugs, cosmetics and model mixtures.
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Affiliation(s)
- Aleksei Furletov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 119991 Moscow, Russia; (V.A.); (A.G.); (S.D.)
| | - Vladimir Apyari
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 119991 Moscow, Russia; (V.A.); (A.G.); (S.D.)
| | - Alexey Garshev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 119991 Moscow, Russia; (V.A.); (A.G.); (S.D.)
- Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory, 119991 Moscow, Russia
| | - Stanislava Dmitrienko
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 119991 Moscow, Russia; (V.A.); (A.G.); (S.D.)
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