The Effect of Femtosecond Laser Pulse Irradiation on the Properties of Advanced Medical Grade PDMS Polymer

Authors

  • Georgi Yankov Institute of Solid State Physics, Bulgarian Academy of Sciences
  • Nadya Stankova Institute of Electronics, Bulgarian Academy of Sciences
  • Ekaterina Iordanova Institute of Solid State Physics, Bulgarian Academy of Sciences

DOI:

https://doi.org/10.7546/CRABS.2023.02.01

Keywords:

femtosecond laser, ablation, PDMS, surface modification

Abstract

The study investigates the effect of the femtosecond laser pulse irradiation on the modification and activation effects of medical-grade polydimethylsiloxane (PDMS) polymer. The motivation of the research is based on the continuous interest and variety of applications of the PDMS material in medicine and implantable neural interface devices. The PDMS is the preferred material due to its exceptional properties such as high biocompatibility and biostability, mechanical flexibility and stability, optical transparency from UV to near IR spectral region, and cost-effectiveness. The experimental investigation is performed by a femtosecond laser system with a pulse duration of 35 fs operating at a repetition rate of 1 kHz. Consistent sets of measurements are performed to analyze and characterize the effect of the laser beam parameters on the optical absorption, and surface morphology concerning the laser-treated zones. The morphology and the optical properties of the PDMS are investigated to activate its surface for successful metallization of the modified tracks. The reported findings and observations specify favourable results of the implementation of the ultrafast laser-based method for micro- or nano-processing of optically transparent biopolymers for interface devices in bioengineering technologies such as neural implants and interface applications. 

Author Biographies

Georgi Yankov, Institute of Solid State Physics, Bulgarian Academy of Sciences

Mailing Address:
Institute of Solid State Physics,
Bulgarian Academy of Sciences
72 Tsarigradsko Shosse Blvd
1784 Sofia, Bulgaria

E-mail: gjankov@ispp.bas.bg

Nadya Stankova, Institute of Electronics, Bulgarian Academy of Sciences

Mailing Address:
Institute of Electronics,
Bulgarian Academy of Sciences
72 Tsarigradsko Shosse Blvd
1784 Sofia, Bulgaria
e-mail: stankovanes@gmail.com

Ekaterina Iordanova, Institute of Solid State Physics, Bulgarian Academy of Sciences

Mailing Address:
Institute of Solid State Physics,
Bulgarian Academy of Sciences
72 Tsarigradsko Shosse Blvd
1784 Sofia, Bulgaria

E-mail: eiordanova@issp.bas.bg

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Published

26-02-2023

How to Cite

[1]
G. Yankov, N. Stankova, and E. Iordanova, “The Effect of Femtosecond Laser Pulse Irradiation on the Properties of Advanced Medical Grade PDMS Polymer”, C. R. Acad. Bulg. Sci. , vol. 76, no. 2, pp. 175–183, Feb. 2023.

Issue

Section

Physics