
AbstractContact lens is a ubiquitous technology used for vision correction and cosmetics. Sensing in contact lenses has emerged as a potential platform for minimally invasive point‐of‐care diagnostics. Here, a microlithography method is developed to fabricate microconcavities and microchannels in a hydrogel‐based contact lens via a combination of laser patterning and embedded templating. Optical microlithography parameters influencing the formation of microconcavities including ablation power (4.3 W) and beam speed (50 mm s−1) are optimized to control the microconcavity depth (100 µm) and diameter (1.5 mm). The fiber templating method allows the production of microchannels having a diameter range of 100–150 µm. Leak‐proof microchannel and microconcavity connections in contact lenses are validated through flow testing of artificial tear containing fluorescent microbeads (Ø = 1–2 µm). The microconcavities of contact lenses are functionalized with multiplexed fluorophores (2 µL) to demonstrate optical excitation and emission capability within the visible spectrum. The fabricated microfluidic contact lenses may have applications in ophthalmic monitoring of metabolic disorders at point‐of‐care settings and controlled drug release for therapeutics.
Technology, Contact Lenses, Chemistry, Multidisciplinary, Materials Science, Microfluidics, microfluidics, FABRICATION, Materials Science, Multidisciplinary, Condensed Matter, DEVICE, INTRAOCULAR-PRESSURE, Physics, Applied, TEMPLATE, MICROCHANNELS, DESIGN, Physical, diagnostics, Photography, Nanoscience & Nanotechnology, tear film, Multidisciplinary, Science & Technology, Chemistry, Physical, Physics, SENSOR, Full Papers, 540, contact lenses, Chemistry, Physics, Condensed Matter, Applied, Physical Sciences, laser ablation, Science & Technology - Other Topics, TECHNOLOGIES, POLYMERS, SYSTEM, ddc: ddc:
Technology, Contact Lenses, Chemistry, Multidisciplinary, Materials Science, Microfluidics, microfluidics, FABRICATION, Materials Science, Multidisciplinary, Condensed Matter, DEVICE, INTRAOCULAR-PRESSURE, Physics, Applied, TEMPLATE, MICROCHANNELS, DESIGN, Physical, diagnostics, Photography, Nanoscience & Nanotechnology, tear film, Multidisciplinary, Science & Technology, Chemistry, Physical, Physics, SENSOR, Full Papers, 540, contact lenses, Chemistry, Physics, Condensed Matter, Applied, Physical Sciences, laser ablation, Science & Technology - Other Topics, TECHNOLOGIES, POLYMERS, SYSTEM, ddc: ddc:
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| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 1% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
