Thin Organosilicon Films for Integrated Optics

Tien, P. K.; Smolinsky, G.; Martin, R. J.

doi:10.1364/ao.11.000637

Cited by 190 publications

(54 citation statements)

References 8 publications

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“…On the other hand, the results with ELPPF coating were expected based on the reported good transparency of plasma polymer films awarding them to be used in optical applications [45]. For example, optically transparent plasma polymer films were synthesized by Tien et al and Couderc et al from hexamethyldisiloxane (HMDSO) and hydrocarbonate precursors, respectively [55,56].…”

Section: Citationmentioning

confidence: 99%

Mechanical, Optical and Barrier Properties of PLA-layered Silicate Nanocomposites Coated with Organic Plasma Polymer Thin Films

Benali¹

2015

Mater. Sci. Eng. Adv. Res

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In the frame of the efforts that are nowadays provided to develop new environmentally-friendly products as biosourced alternative to petrochemical polymers, we investigated in this work new PLA-based materials for packaging applications obtained by combining bulk and surface modifications of PLA substrates. Four PLA-based nanocomposites were prepared by adding organo-modified layered silicates (either Cloisite® 30B or Cloisite® 20A) and a nucleating agent, i.e. N,N'-ethylenebisstearamide (EBS). The combination of EBS with CL30B led to very good nanofiller dispersion into PLA-clay nanocomposite while allowing, unlike neat PLA, to preserve the structural and thermal properties of PLA under plasma treatment. Based on this study, PLA/CL30B/EBS nanocomposites have been selected to investigate their surface modification that consisted in depositing on this substrate an organic barrier coating, i.e. an ethyl lactate plasma polymer film (ELPPF) synthesized by plasma polymerization of ethyl lactate. The PLA/CL30B/EBS-ELPPF system allowed increasing the tensile modulus from 3800 MPa (uncoated film) to 5200 MPa at high power plasma while preserving the ultimate mechanical properties. In addition, optical properties study showed that PLA/CL30B/EBS-ELPPF is also the best UV-B protective material while keeping a good transparency. Finally, the oxygen transmission rate was reduced by 53% with respect to neat PLA. All properties of final material are discussed as a function of the characteristics of PLA-clay nanocomposite substrate, of the ethyl lactate plasma polymer film (ELPPF) and of the substrate/plasma film interface.

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Section: Citationmentioning

confidence: 99%

Mechanical, Optical and Barrier Properties of PLA-layered Silicate Nanocomposites Coated with Organic Plasma Polymer Thin Films

Benali¹

2015

Mater. Sci. Eng. Adv. Res

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“…In recent years, substantial progress has been made applying these films in applications ranging from optical waveguides, [1,2] optical filters and coatings, [3][4][5][6][7][8][9] photorefractive materials, [10,11] low-dielectric constant and low-refractive index materials, [12][13][14] display devices, [15] nonlinear optics, [16] light-emitting materials, [17] optical information recording, [18] and solar energy conversion. [19] Plasma polymerization (PP) of fluorine-containing materials has received special attention because these polymeric films possess a low dielectric constant and refractive index in addition to low surface energy, low coefficient of friction, low permeability constant, and good biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

PECVD Siloxane and Fluorine‐Based Copolymer Thin Films

Jiang¹,

Eyink²,

Grant³

et al. 2008

Chemical Vapor Deposition

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Plasma copolymerization is utilized to fabricate thin photonic films based on hexamethyldisiloxane (HMDSO, C 6 H 18 Si 2 O) and octafluorocyclobutane (OFCB, C 4 F 8 ). The structure of the plasma copolymerized films is examined by X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR), and the optical properties including refractive index, n, and extinction coefficient, k, are determined by spectroscopic ellipsometry. The refractive indices, which range from 1.38 to 1.54, can be manipulated by adjusting the volume ratio of the two monomers, HMDSO and OFCB, during the polymerization. A nonlinear relationship between the refractive index and extinction coefficient with comonomer feed ratio is observed. A strong initial increase in both n and k as the amount of HMDSO is increased is attributed to significant defluorination of the resultant polymer films coupled with the formation of a C-C rich crosslinked network. Once the network incorporates substantial amounts of Si-C and Si-O bonds, the refractive index starts to decrease slowly due to a lowering of the density. XPS and FTIR results confirm the changes in internal structure consistent with this mechanism.

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“…Indeed, organosilicon polymers are used on a large scale in a wide range of applications including: optical waveguides [1][2][3], corrosion protection layers [4][5][6], low-k (k = 2.7-3.5) thin films replacing silicon dioxide [7,8], membranes [9], biocompatible coatings [10], and selective cell-adhesive interfaces [11].…”

Section: Introductionmentioning

confidence: 99%