Direct laser induced writing of high precision gold nanosphere SERS patterns

Geladari, Olympia; Haizmann, Philipp; Maier, Andre; Strienz, Markus; Eberle, Martin; Scheele, Marcus; Peisert, Heiko; Schnepf, Andreas; Chassé, Thomas; Braun, Kai; Meixner, Alfred J.

doi:10.1039/d3na00855j

Nanoscale Adv.

2024

DOI: 10.1039/d3na00855j

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Direct laser induced writing of high precision gold nanosphere SERS patterns

Olympia Geladari,

Philipp Haizmann,

Andre Maier

et al.

Abstract: Introducing a fast, reliable, and flexible “Direct Laser Writing” technology for printing precise and complex SERS-patters on different substrates of any desired structure with nanometer resolution for applications in sensor technology and optoelectronics.

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Three-Dimensional (3D) Surface-Enhanced Raman Spectroscopy (SERS) Substrates for Sensing Low-Concentration Molecules in Solution

Mukherjee,

Wackenhut,

Meixner

et al. 2024

Nanomaterials

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The use of surface-enhanced Raman spectroscopy (SERS) in liquid solutions has always been challenging due to signal fluctuations, inconsistent data, and difficulties in obtaining reliable results, especially at very low analyte concentrations. In our study, we introduce a new method using a three-dimensional (3D) SERS substrate made of silica microparticles (SMPs) with attached plasmonic nanoparticles (NPs). These SMPs were placed in low-concentration analyte solutions for SERS analysis. In the first approach to perform SERS in a 3D environment, glycerin was used to immobilize the particles, which enabled high-resolution SERS imaging. Additionally, we conducted time-dependent SERS measurements in an aqueous solution, where freely suspended SMPs passed through the laser focus. In both scenarios, EFs larger than 200 were achieved, which enabled the detection of low-abundance analytes. Our study demonstrates a reliable and reproducible method for performing SERS in liquid environments, offering significant advantages for the real-time analysis of dynamic processes, sensitive detection of low-concentration molecules, and potential applications in biomolecular interaction studies, environmental monitoring, and biomedical diagnostics.

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Three-Dimensional (3D) Surface-Enhanced Raman Spectroscopy (SERS) Substrates for Sensing Low-Concentration Molecules in Solution

Mukherjee,

Wackenhut,

Meixner

et al. 2024

Nanomaterials

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show abstract

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Direct laser induced writing of high precision gold nanosphere SERS patterns

Abstract: Introducing a fast, reliable, and flexible “Direct Laser Writing” technology for printing precise and complex SERS-patters on different substrates of any desired structure with nanometer resolution for applications in sensor technology and optoelectronics.

Cited by 1 publication

References 53 publications

Three-Dimensional (3D) Surface-Enhanced Raman Spectroscopy (SERS) Substrates for Sensing Low-Concentration Molecules in Solution

Three-Dimensional (3D) Surface-Enhanced Raman Spectroscopy (SERS) Substrates for Sensing Low-Concentration Molecules in Solution

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