Replication technology for optical microsystems

Gale, M. D.; Gimkiewicz, Christiane; Obi, S.; Schnieper, Marc; Sochtig, J.; Thiele, Hans; Westenhofer, S.

doi:10.1016/j.optlaseng.2004.02.007

Cited by 85 publications

(46 citation statements)

References 6 publications

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“…In the past, different molding techniques, such as UV embossing of curable polymer-based reactive resins, hot embossing, and injection molding, have been established. [5][6][7] Only a few highly transparent plastic materials possessing a fixed refractive index (n) are commercially available; for certain applications, a modification of the optical properties, such as n, transmittance, and polarization, is desirable. In the case of curable reactive polymer resins, many different (meth)acrylates, epoxides, and unsaturated polyesters are available that yield thermoplastic polymers or thermosets after polymerization.…”

Section: Introductionmentioning

confidence: 99%

Tailoring the optical and thermomechanical properties of polymer host–guest systems

Hanemann

Honnef

2011

J of Applied Polymer Sci

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For modern applications in microoptics, the refractive index (n) of polymers can be adjusted in a certain range by the addition of electron-rich organic dopants. As an unwanted side effect, a pronounced plasticizing occurs. In this work, the addition of a crosslinker (divinylbenzene) to an unsaturated polyester matrix, doped with phenanthrene for n adjustment, allowed us to successfully suppress the plasticizing effect measured after polymerization. Even at high phenanthrene concentrations, the glasstransition temperature of the initial polymer could be almost retained. An increase of the polymer n from 1.5684 to a value of 1.6425 was achieved.

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Section: Introductionmentioning

confidence: 99%

Tailoring the optical and thermomechanical properties of polymer host–guest systems

Hanemann

Honnef

2011

J of Applied Polymer Sci

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“…A sol-gel material (Ormocer, from Micro Resist Technology) is dispensed onto a 2 in square glass plate. A nickel shim is obtained from the master grating by electroplating and is used to replicate the grating into the sol-gel by UV-casting process [18,19]. In a second step, a zinc sulfide (ZnS) layer is evaporated to obtain the waveguide layer.…”

Section: A Sensor Fabricationmentioning

confidence: 99%

Resonant absorption of a chemically sensitive layer based on waveguide gratings

Davoine¹,

Paeder²,

Basset³

et al. 2013

Appl. Opt.

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A colorimetric sensor providing a direct visual indication of chemical contamination was developed. The sensor is a combination of a chemically sensitive dye layer and a resonant waveguide grating. Enhancement of the light absorption by the photonic structure can be clearly seen. The detection is based on the color change of the reflected light after exposure to a gas or a liquid. Low-cost fabrication and compatibility with environments where electricity cannot be used make this device very attractive for applications in hospitals, industries, with explosives, and in traffic.

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“…ried out by hot embossing, is easily transferred to a time saving and cost effective, high-volume roll-toroll manufacturing [27][28][29]. By combining the advantages of the self-organized pattern formation and the thermal imprint processing, large volumes of patterned polymer products with a specific sub-micron structuring can be prepared.…”

Section: Introductionmentioning

confidence: 99%

Low-cost replication of self-organized sub-micron structures into polymer films

Stenberg¹,

Stenberg²,

Takkunen³

et al. 2015

Express Polym. Lett.

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Abstract. In this paper, the results of exploiting self-organized sub-micron polystyrene (PS) wrinkle patterns possessing random orientation, in preparation of a nickel stamp for hot embossing purposes, are presented. Self-organized patterns were prepared employing a method in which a stiff cross-linked capping layer on the topmost part of the soft polystyrene layer was created by using reactive ion etching (RIE) device with mild conditions and argon as a process gas, and the wrinkle formation was initiated thermally. Different surface patternings were obtained using silicon and stainless steel (SST) wafers as substrates. Prepared Ni-stamps were employed in hot embossing of polycarbonate (PC) and cyclo-olefin polymer (COP) films, using a nano-imprinting process. The replication quality of the self-organized wrinkle structures in PC and COP films was monitored by comparing the shape and dimensions of the original and final surface structures. The hot embossed sub-micron scale features, originally formed on stainless steel substrate, were found to have influence on the optical properties of the PC and COP films by lowering their reflectances.

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Replication technology for optical microsystems

Cited by 85 publications

References 6 publications

Tailoring the optical and thermomechanical properties of polymer host–guest systems

Tailoring the optical and thermomechanical properties of polymer host–guest systems

Resonant absorption of a chemically sensitive layer based on waveguide gratings

Low-cost replication of self-organized sub-micron structures into polymer films

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