Microlens fabrication on tot’hema sensitized gelatin

Murić, Branka; Pantelić, Dejan; Vasiljević, Darko; Panić, B.

doi:10.1016/j.optmat.2007.05.051

Cited by 15 publications

(8 citation statements)

References 16 publications

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“…Previously we have used gelatin plasticized with tot'hema (an oral solution for anemia treatment) and sensitized with eosin Y (a red uorescent dye with absorption maximum at 530 nm) to produce microoptical components (Murić et al 2007;Murić et al 2008). We were able to manufacture negative (concave) microlenses, but the problem was gradual darkening of the material.…”

Section: Preparation Of Photo-meltable Gelmentioning

confidence: 99%

Rapid Direct Laser Writing of Microoptical Components on A Meltable Biocompatible Gel

Radmilović

Murić

Gujić

et al. 2021

Preprint

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Microoptical components are coming of age in a wide range of applications: lab-on-a-chip, imaging, detection... There are a large number of fabrication technologies capable of producing high quality individual components and their arrays. However, most of them require high-end and costly equipment, complex and time-consuming fabrication, harmful chemicals, resulting in expensive final products. Here we present a technology capable of producing high quality microoptical components, using low-end direct laser writing on a biocompatible, environmentally friendly hydrogel, without any waste substances. Gel is locally and controllably melted while surface tension forces shape the optical component, following the laser beam profile. Process is so quick that a single microlens is fabricated in less than a second, and can be used instantly without any further processing. The technology is neither subtractive nor additive, and the base material is simply displaced producing a smooth surface. We have been able to fabricate individual microlenses and their arrays (positive, negative, aspheric), gratings and diffractive components. The technology is tested by generating unique, difficult to counterfeit QR-codes. Turnaround time is fast and makes the technology suitable both for rapid prototyping and serial production.

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Section: Preparation Of Photo-meltable Gelmentioning

confidence: 99%

Rapid Direct Laser Writing of Microoptical Components on A Meltable Biocompatible Gel

Radmilović

Murić

Gujić

et al. 2021

Preprint

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“…Sigma Aldrich) by weight of dry gelatin, and 0.3 ml of 1% aqueous eosin (5wt.% in H2O, Sigma Aldrich) solution was prepared as describred previously [31,32]. The five TESG solutions with different tot'hema concentrations (5%, 10%, 15%, 20%, and 30% v/v) were made.…”

Section: Film Preparationmentioning

confidence: 99%

“…So we get a film based on gelatin doped with tot'hema and sensitized with eosin dye [30][31][32][33], (denoted as tot'hema-eosin sensitized gelatin, abbreviated as TESG.…”

Section: Introductionmentioning

confidence: 99%

Application of tot’hema eosin sensitized gelatin film for adaptive microlenses

Muric¹,

Pantelic²,

Vasiljevic³

et al. 2017

Tehnika

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“…The BSG film is prepared by the gravity settling method [7] on a microscope glass plate (the procedure outlined in Table I). The betanin is natural, water soluble pigment which can be obtained from red beet roots.…”

Section: Production Of Microlensesmentioning

confidence: 99%

Aberrations of Betanin Sensitized Gelatin Microlenses

et al. 2009

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Aberrations of the concave aspherical microlenses are presented. Microlenses are produced by using betanin sensitized gelatin and 532 nm laser irradiation (2nd Nd:YAG harmonic). Aberrations are analyzed by calculation of the longitudinal spherical aberration and the root mean square RMS spot radius. Three presented microlenses had good image quality for the large F number and the moderate field angle.

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Microlens fabrication on tot’hema sensitized gelatin

Cited by 15 publications

References 16 publications

Rapid Direct Laser Writing of Microoptical Components on A Meltable Biocompatible Gel

Rapid Direct Laser Writing of Microoptical Components on A Meltable Biocompatible Gel

Application of tot’hema eosin sensitized gelatin film for adaptive microlenses

Aberrations of Betanin Sensitized Gelatin Microlenses

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