Bionic 3D periodic nanostructures by Ag nano-islands deposited on cicada wings for rapid SERS detection

Cheng, Yuanna; Hsiao, Chia-Wei; Lin, Chia Hsien; Huang, Li-Ying; Chen, Jeng-Shiung; Yang, Ming-Chien; Liu, Tingyu

doi:10.1016/j.surfcoat.2022.128323

Cited by 16 publications

(2 citation statements)

References 33 publications

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“…For example, aircraft coatings based on shark skin resistance [6,[14][15][16], radar sonar based on bats [17], solar applications inspired by photosynthesis, bullet train heads based on kingfisher beaks [18,19], antifouling coatings based on frog skins [20], etc. Biomaterials have also been widely applied in SERS substrates due to their 3D periodic microstructures, such as butterfly wings, cicada wings, and rose petals [21][22][23]. The best case for the continuation, this study focuses on the surface structure of nepenthes.…”

Section: Introductionmentioning

confidence: 99%

Replica of Bionic Nepenthes Peristome-like and Anti-Fouling Structures for Self-Driving Water and Raman-Enhancing Detection

Lin

Syu

et al. 2022

Polymers

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The flexible, anti-fouling, and bionic surface-enhanced Raman scattering (SERS) biochip, which has a Nepenthes peristome-like structure, was fabricated by photolithography, replicated technology, and thermal evaporation. The pattern of the bionic Nepenthes peristome-like structure was fabricated by two layers of photolithography with SU-8 photoresist. The bionic structure was then replicated by polydimethylsiloxane (PDMS) and grafting the zwitterion polymers (2-methacryloyloxyethyl phosphorylcholine, MPC) by atmospheric plasma polymerization (PDMS-PMPC). The phospholipid monomer of MPC immobilization plays an important role; it can not only improve hydrophilicity, anti-fouling and anti-bacterial properties, and biocompatibility, but it also allows for self-driving and unidirectional water delivery. Ag nanofilms (5 nm) were deposited on a PDMS (PDMS-Ag) substrate by thermal evaporation for SERS detection. Characterizations of the bionic SERS chips were measured by a scanning electron microscope (SEM), optical microscope (OM), X-ray photoelectron spectrometer (XPS), Fourier-transform infrared spectroscopy (FTIR), and contact angle (CA) testing. The results show that the superior anti-fouling capability of proteins and bacteria (E. coli) was found on the PDMS-PMPC substrate. Furthermore, the one-way liquid transfer capability of the bionic SERS chip was successfully demonstrated, which provides for the ability to separate samples during the flow channel, and which was detected by Raman spectroscopy. The SERS intensity (adenine, 10−4 M) of PDMS-Ag with a bionic structure is ~4 times higher than PDMS-Ag without a bionic structure, due to the multi-reflection of the 3D bionic structure. The high-sensitivity bionic SERS substrate, with its self-driving water capability, has potential for biomolecule separation and detection.

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Section: Introductionmentioning

confidence: 99%

Replica of Bionic Nepenthes Peristome-like and Anti-Fouling Structures for Self-Driving Water and Raman-Enhancing Detection

Lin

Syu

et al. 2022

Polymers

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“…The laser wavelength was 532 nm, the laser power was 0.45 mW, the exposure time was 0.5 s, and a grating of 1200 l mm −1 was used. The SERS EF was calculated using the following formula: [43][44][45]…”

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confidence: 99%

3D Surface-Enhanced Raman Scattering Substrate Based on an Array of Self-Assembled Au@SiO₂ Microspheres

Liang,

Wang,

Yang

et al. 2024

ECS J. Solid State Sci. Technol.

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A quasi-periodic array of 3D gold-nanoparticle-capped SiO2 microspheres (Au@SiO2) was designed and prepared with a facile approach to enhance the Raman signal intensity of adsorbed biomolecules. Through adjusting the thickness and annealing of Au thin films initially deposited on arrays of self-assembled SiO2 microspheres, we were able to control the diameter of Au nanoparticles and their interparticle spacing to produce two types of plasmonic near-field hot spots, locating at the gaps of such densely arranged Au nanoparticles on individual SiO2 microspheres and in the gap regions of neighboring SiO2 microspheres, respectively. Such double near-field enhancement mechanism leads to a surface-enhanced Raman scattering (SERS) enhancement factor up to 3×106 for Rhodamine 6G molecules. The SERS signal intensity was highly uniform with a relative standard deviation of 4.5%. This 3D SERS substrate has significant potential for various applications in the field of SERS detection of analytes and wearable biosensing.

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Lithography-free fabrication of scalable 3D nanopillars as ultrasensitive SERS substrates

Chirumamilla

Moise

Cai

et al. 2023

Applied Materials Today

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Bionic 3D periodic nanostructures by Ag nano-islands deposited on cicada wings for rapid SERS detection

Cited by 16 publications

References 33 publications

Replica of Bionic Nepenthes Peristome-like and Anti-Fouling Structures for Self-Driving Water and Raman-Enhancing Detection

Replica of Bionic Nepenthes Peristome-like and Anti-Fouling Structures for Self-Driving Water and Raman-Enhancing Detection

3D Surface-Enhanced Raman Scattering Substrate Based on an Array of Self-Assembled Au@SiO₂ Microspheres

Lithography-free fabrication of scalable 3D nanopillars as ultrasensitive SERS substrates

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Bionic 3D periodic nanostructures by Ag nano-islands deposited on cicada wings for rapid SERS detection

Cited by 16 publications

References 33 publications

Replica of Bionic Nepenthes Peristome-like and Anti-Fouling Structures for Self-Driving Water and Raman-Enhancing Detection

Replica of Bionic Nepenthes Peristome-like and Anti-Fouling Structures for Self-Driving Water and Raman-Enhancing Detection

3D Surface-Enhanced Raman Scattering Substrate Based on an Array of Self-Assembled Au@SiO2 Microspheres

Lithography-free fabrication of scalable 3D nanopillars as ultrasensitive SERS substrates

Contact Info

Product

Resources

About

3D Surface-Enhanced Raman Scattering Substrate Based on an Array of Self-Assembled Au@SiO₂ Microspheres