Excimer laser decomposition of silicone

Laude, L.D.; Cochrane, Cédric; Dicara, Cl.; Dupas-Bruzek, C.; Kolev, K.

doi:10.1016/s0168-583x(03)01183-2

Cited by 11 publications

(6 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Concerning our experimental results, two main disadvantages of the ns-laser ablation of medical grade PDMS can be underlined: (i) the re-deposition of the ablated material (debris) in the zone adjacent to the ablated areas and (ii) the formation of very rough microstructures. However, our experimental findings, especially regarding UV ns-laser ablation, confirmed the results reported by other authors [ 26 , 39 , 40 ] that the ns-laser treatment of PDMS induced more prominent chemical transformations in the local area of impact rather than the fs-laser irradiation [ 21 , 22 ]. The significant chemical activation of the surface is the reason to prefer ns-laser treatment of PDMS elastomer.…”

Section: Introductionsupporting

confidence: 92%

“…The chemical structure of PDMS consists of repeating monomer [SiO(CH 3 ) 2 ] units with the main chain of Si-O-Si and CH 3 radicals bonded to the Si. Therefore, during the laser ablation of PDMS elastomer an evolution of C-radicals, CO 2, and/or molecular oxygen (O 2 ) is possible [ 39 ]. The formation of inorganic products such as crystal silicon (c-Si) and crystalline and amorphous phases of carbon, confirmed by µ-Raman spectroscopic and XPS measurements in zones of the laser-treated area, supports this assumption.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

New Approach toward Laser-Assisted Modification of Biocompatible Polymers Relevant to Neural Interfacing Technologies

et al. 2021

View full text Add to dashboard Cite

We report on a new approach toward a laser-assisted modification of biocompatible polydimethylsiloxane (PDMS) elastomers relevant to the fabrication of stretchable multielectrode arrays (MEAs) devices for neural interfacing technologies. These applications require high-density electrode packaging to provide a high-resolution integrating system for neural stimulation and/or recording. Medical grade PDMS elastomers are highly flexible with low Young’s modulus < 1 MPa, which are similar to soft tissue (nerve, brain, muscles) among the other known biopolymers, and can easily adjust to the soft tissue curvatures. This property ensures tight contact between the electrodes and tissue and promotes intensive development of PDMS-based MEAs interfacing devices in the basic neuroscience, neural prosthetics, and hybrid bionic systems, connecting the human nervous system with electronic or robotic prostheses for restoring and treating neurological diseases. By using the UV harmonics 266 and 355 nm of Nd:YAG laser medical grade PDMS elastomer is modified by ns-laser ablation of in water. A new approach of processing is proposed to (i) activate the surface and to obtain tracks with (ii) symmetric U-shaped profiles and (iii) homogeneous microstructure This technology provides miniaturization of the device and successful functionalization by electroless metallization of the tracks with platinum (Pt) without preliminary sensitization by tin (Sn) and chemical activation by palladium (Pd). As a result, platinum black layers with a cauliflower-like structure with low values of sheet resistance between 1 and 8 Ω/sq are obtained.

show abstract

Section: Introductionsupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

New Approach toward Laser-Assisted Modification of Biocompatible Polymers Relevant to Neural Interfacing Technologies

et al. 2021

View full text Add to dashboard Cite

show abstract

“…(iv) An increase of Si in the EDS spectra was observed acquired on PDMS irradiated with Nd:YAG laser in comparison with those on native PDMS [10]. Laser treatment is used in order to facilitate selective metallization of the areas activated in this way [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

XPS and μ-Raman study of nanosecond-laser processing of poly(dimethylsiloxane) (PDMS)

Armyanov

Stankova

Atanasov

et al. 2015

Nuclear Instruments and Methods in Physics Research Section B:

Self Cite

View full text Add to dashboard Cite

“…A paired t-test was performed on the different sets of data and a p-value of 0.002 indicates that the degraded and the nondegraded samples are different at a confidence level of 99.8% while a p-value of 0.008 indicates that the regions away from the cracks and virgin samples are different at a confidence level of 99.2% [17]. The greater depths of penetration in the region close to the cracks could be attributed to lesser concentrations of Si-O-Si and Si-C bonds [18]. For the cracked regions, laser experiments are not really necessary since the degradation is visible.…”

Section: Insulator 1: 230 Kv Suspension Insulatormentioning

confidence: 99%

Quantification of degradation in nonceramic housing materials by laser ablation

Pinnangudi

Gorur

Poweleit

2006

IEEE Trans. Dielect. Electr. Insul.

View full text Add to dashboard Cite

A laser irradiation technique has been explored to quantify visible as well as invisible degradation of housing materials used for nonceramic insulators. Nonceramic insulators that were removed from service and new samples of the housing that were subjected to accelerated testing in the laboratory have been evaluated. The method uses a constant power laser source for delivering the same energy to the test specimen. The proposed method is fairly quick and could be looked upon as an additional method for characterizing aging of nonceramic insulators. It has been shown that this method provides a better characterization of aging than is obtained from Fourier Transform Infrared Spectroscopy. The housing materials evaluated include silicone rubber, ethylene propylene diene monomer rubber and cycloaliphatic epoxy resin.

show abstract

Excimer laser decomposition of silicone

Cited by 11 publications

References 1 publication

New Approach toward Laser-Assisted Modification of Biocompatible Polymers Relevant to Neural Interfacing Technologies

New Approach toward Laser-Assisted Modification of Biocompatible Polymers Relevant to Neural Interfacing Technologies

XPS and μ-Raman study of nanosecond-laser processing of poly(dimethylsiloxane) (PDMS)

Quantification of degradation in nonceramic housing materials by laser ablation

Contact Info

Product

Resources

About