Metrology of Injection Molded Optics

Bäumer, Stefan

doi:10.1002/3527605126.ch4

Cited by 9 publications

(10 citation statements)

References 22 publications

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“…A group of researchers developed implantable multifunctional fiber probes for simultaneous optical, electrical, and chemical interrogation of neural circuits in free-moving mice that remain functional for two months following the operation [ 54 ]. The fiber probe was fabricated using a thermal drawing process via a combination of polycarbonate (PC, refractive index n = 1.586, glass transition temperature T g = 150 °C [ 120 ]) and cyclic olefin copolymer (COC, n = 1.53, T g = 158 °C [ 121 ]) as waveguide and recording electrode. The integrated fiber electrode for recording, waveguide for light transmission, and microfluidic channel for drug delivery in a single probe is proposed.…”

Section: The Materials Of Polymer Optical Fibermentioning

confidence: 99%

Biocompatible and Biodegradable Polymer Optical Fiber for Biomedical Application: A Review

et al. 2021

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This article discusses recent advances in biocompatible and biodegradable polymer optical fiber (POF) for medical applications. First, the POF material and its optical properties are summarized. Then, several common optical fiber fabrication methods are thoroughly discussed. Following that, clinical applications of biocompatible and biodegradable POFs are discussed, including optogenetics, biosensing, drug delivery, and neural recording. Following that, biomedical applications expanded the specific functionalization of the material or fiber design. Different research or clinical applications necessitate the use of different equipment to achieve the desired results. Finally, the difficulty of implanting flexible fiber varies with its flexibility. We present our article in a clear and logical manner that will be useful to researchers seeking a broad perspective on the proposed topic. Overall, the content provides a comprehensive overview of biocompatible and biodegradable POFs, including previous breakthroughs, as well as recent advancements. Biodegradable optical fibers have numerous applications, opening up new avenues in biomedicine.

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Section: The Materials Of Polymer Optical Fibermentioning

confidence: 99%

Biocompatible and Biodegradable Polymer Optical Fiber for Biomedical Application: A Review

et al. 2021

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“…The objective of this work is to assess the quality of the injection molded micro plates by measuring birefringence and retardation present in the micro plates. Birefringence is optically anisotropic characteristic property exhibited by material because of mechanical stresses present during manufacturing which causes part deformation in the material 6 . This characteristic was first observed in calcite explained by Danish scientist Rasmus Bartholin in 1669.…”

Section: Introductionmentioning

confidence: 99%

Birefringence characterization of injection molded microplates

Adhikari

Asundi

2015

SPIE Proceedings

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Birefringence affects the quality of image analysis in injection molded micro-plates. Depending upon their manufacturing / production processes and the type of material, different plates exhibit varying amounts of birefringence. This birefringence is attributed to residual stress generated during the molding process. Polarimeter is the standard tool for birefringence distribution visualization and quantification. Broad chemical resistance and high mechanical stability of the plates are the desirable properties that can be characterized by birefringence measurement. Birefringence, expressed in nm/cm is light retardance (nm) after passing through a sample with certain thickness (cm). Low or uniform birefringence plates provide high-resolution demonstrating higher performance, hence suitable for bio-chemical analysis.

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“…Plastic optics has been widely used and need to be characterized [1] for quality testing before launch in the market. Even though advancement in manufacturing of injection molded plastic optics [2] is on progress, yet the limitation exist. Free mold shrinkage, temperature gradient [3] , stress induced distortion are the main hindrance causing birefringence [4] .…”

Section: Introductionmentioning

confidence: 99%

Modeling, simulation, and analysis of birefringent effects in plastic optics

Adhikari

Asundi

2015

SPIE Proceedings

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Plastic optics has been widely used in different application. They have been facing birefringent effects during manufacturing or during certain application. Finite element modeling of plastic optics in CAD interface is done along with experimental and theoretical comparison of the specimen with the help of solid mechanics and image processing. Low birefringence plastic optics is chosen for the experiment and varying load is applied to observe the characteristics both in experiment and simulation. Low birefringence polariscope was used to measure the birefringence in the plastic specimen. Birefringence is caused due to many effects like stress induced birefringence temperature induced due to thermal gradient and pressure during manufacturing. Here stress is induced on low birefringence specimen by two point compression loading and is compared on the base of solid mechanics, finite element modeling and image processing. The results were found to be similar and convincing.

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Metrology of Injection Molded Optics

Cited by 9 publications

References 22 publications

Biocompatible and Biodegradable Polymer Optical Fiber for Biomedical Application: A Review

Biocompatible and Biodegradable Polymer Optical Fiber for Biomedical Application: A Review

Birefringence characterization of injection molded microplates

Modeling, simulation, and analysis of birefringent effects in plastic optics

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