UV-curable hybrid polymers for optical applications: technical challenges, industrial solutions, and future developments

Gruetzner, G.; Klein, Jan J.; Vogler, Marko; Schleunitz, Arne

doi:10.1117/12.2043038

Cited by 11 publications

(7 citation statements)

References 12 publications

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“…Direct laser writing (DLW) is a mask-free lithography technique for arbitrary microstructures with sub-micron resolution and high reproducibility. 1,2 Depending on required geometry and application, different photosensitive polymers are currently in use: the resin SU-8, 3 acrylic IP resists (Nanoscribe), 4 organically modified ceramics, [5][6][7] thiol-enebased polymer, 8 and hydrogels. 9 Recently, photo-initiated protein cross-linking has been exploited to fabricate proteinaceous hydrogel structures.…”

mentioning

confidence: 99%

Fabrication of submicron proteinaceous structures by direct laser writing

Serien

Takeuchi

2015

Applied Physics Letters

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In this paper, we provide a characterization of truly free-standing proteinaceous structures with submicron feature sizes depending on the fabrication conditions by model-based analysis. Protein cross-linking of bovine serum albumin is performed by direct laser writing and two-photon excitation of flavin adenine dinucleotide. We analyze the obtainable fabrication resolution and required threshold energy for polymerization. The applied polymerization model allows prediction of fabrication conditions and resulting fabrication size, alleviating the application of proteinaceous structure fabrication.

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confidence: 99%

Fabrication of submicron proteinaceous structures by direct laser writing

Serien

Takeuchi

2015

Applied Physics Letters

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“…In addition, although the inkjet printing set-up was performed using a single nozzle printhead, faster printing can be readily achieved by using printheads with up to 2048 nozzles and jetting frequencies between 5 and 10 kHz [33]. For high throughput, based on the compatibility of NIL and IJP with R2R, these steps can be integrated into large scale production apparatus [34,35].…”

Section: Discussionmentioning

confidence: 99%

Organic-inorganic-hybrid-polymer microlens arrays with tailored optical characteristics and multi-focal properties

Jacot-Descombes¹,

Cadarso²,

Schleunitz³

et al. 2015

Opt. Express

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Plano-convex microlens arrays of organic-inorganic polymers with tailored optical properties are presented. The fine-tuning of each microlens within an array is achieved by confining inkjet printed drops of the polymeric ink onto pre-patterned substrates. The lens optical properties are thus freely specified, and high numerical apertures from 0.45 to 0.9 and focal lengths between 10 μm and 100 μm are demonstrated, confirming theoretical predictions. Combining nanoimprint lithography approaches and inkjet printing enables using the same material for the microlenses and their substrates, improving the optical performances. Microlens arrays with desired specifications are printed reaching yields up to 100% and high lens reproducibility with standard deviations of the apparent contact angle under 1° and of the numerical apertures and focal lengths under 6%. Microlens arrays involving lenses with different characteristics, e.g. multi focal length, and thus focal planes separated by only few microns are printed with the same reproducibility.

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“…Therefore, the SPR is the dominant factor that affects the attenuation coefficient in the gold-coated ormocomp nanowires while the scattering from the surface roughness is the main factor for the non-coated nanowires (Viphavakit et al 2014a). The power loss from material absorption can be negligible because ormocomp has very low absorption in the visible region (Gruetzner et al 2014).…”

Section: Analysis Of the Spr Peakmentioning

confidence: 99%

Surface plasmon resonance-enhanced light interaction in an integrated ormocomp nanowire

et al. 2016

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An integrated ormocomp nanowire coated with gold metal layer is proposed and its optical characteristics with the effect of surface plasmon resonance (SPR) are studied. The integrated rib-like nanowire has a trapezoidal shape with sidewall angles of 75°. It is coated with 50 nm gold layer to introduce the SPR and enhance the evanescent field in the sensing region located at the dielectric/metal interface. The possible field modes, the normalized power confinement, and the SPR peak position of the nanowire are studied over the wavelength and the metal thickness by using the full-vectorial H-field FEM in quasi-TM mode. The attenuation coefficient of the nanowire, the SPR peak wavelength, and the wavelength shift is experimentally extracted for three different cladding materials. The redshift of the supermode coupling between the dielectric mode and the anti-symmetric supermode is observed with the higher cladding-index and larger metal thickness. The improvement of the power confinement in the sensing region with the SPR effect is ten times (109) better than a previous similar study.

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UV-curable hybrid polymers for optical applications: technical challenges, industrial solutions, and future developments

Cited by 11 publications

References 12 publications

Fabrication of submicron proteinaceous structures by direct laser writing

Fabrication of submicron proteinaceous structures by direct laser writing

Organic-inorganic-hybrid-polymer microlens arrays with tailored optical characteristics and multi-focal properties

Surface plasmon resonance-enhanced light interaction in an integrated ormocomp nanowire

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