20.500.12556/RUL-173140 Optimizacija 3D tiska za mikrofluidiko z optičnim dostopom Optimization of 3D printing for microfluidics with optical access V magistrski nalogi smo poskušali izdelati mikrofluidni čip z optičnim dostopom z uporabo aditivne tehnologije, bolj specifično 3D tiska. Za tiskalnik smo uporabili DLP sistem proizvajalca BMF s smolo HTL-20 istega proizvajalca. Določili smo Jacobovo krivuljo in izdelali tri Y mikrofluidne mešalnike. Zaprtega tipa, z lepljenim pokrovom in tiskanega na steklen substrat. Te smo primerjali glede na topologijo prereza. Nato smo preizkusili kakšen vpliv imajo določeni parametri na sprijemanje. Testirali smo dovedeno energijo v prvo plast, kako vpliva geometrija na sprijemanje ter kako vpliva na sprijemanje število plasti. Na podlagi testov smo ugotovili, da sta za čipe z optičnim dostopom najprimernejši metodi tiskanje na steklen substrat in lepljenje pokrova. Ugotovili smo, da se z višanjem energije izboljšuje sprijemanje smole s substratom, a energijo lahko povečujemo le do določene vrednosti, saj se nato začne sprijemati prva plast z membrano bolj kot s substratom. Geometrija pomembno vpliva na sprijemanje, tu poskušamo prvi plasti maksimirati površino ostalim pa minimizirati. V našem primeru smo najboljše rezultate tiskanja na substrat dobili pri intenziteti 114 mW/cm$^2$ in ekspoziciji 16 s. In my master's thesis, we tried to produce a microfluidic chip with optical access using additive technology, more specifically with 3D printing. For the printer, we used a DLP system from BMF with HTL-20 resin from the same manufacturer. We determined Jacob's curve and produced three Y microfluidic mixers. A closed type, one with a glued lid and one printed on a glass substrate. We compared them according to the topology of the cross section. We then tested the influence of certain parameters on adhesion. We tested the energy supplied to the first layer, how geometry affects adhesion and how the number of layers affect adhesion. Based on the tests, we found that printing on a glass substrate and gluing the lid on are the most suitable methods for chips with optical access. We found that increasing energy improves the adhesion of the resin to the substrate, but we can only increase the energy up to a certain value, after that the first layer starts to adhere to the membrane more than the substrate. Geometry has a significant impact on adhesion, there we should try to maximize the surface area of the first layer and minimize the rest. In our case, the best results for printing on substrate were obtained at an intensity of 114 mW/cm$^2$ and an exposure time of 16 s. mikrofluidika 3D tisk DLP substrat optični dostop microfluidcs 3D printing DLP substrate optical access true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-09-13 08:30:31 2025-09-13 08:30:35 2025-11-05 03:31:52 0000-00-00 00:00:00 2025 0 0 XXII, 58 str. 2025 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532:535:004.925.84(043.2) 276314 250064387 44062.pdf 44062.pdf 1 28F9D00EC1C0B55C4FC6AB73EEB66649 f80580e13bf8d7b0813f68984b1ca01f4c4b52023ec2c7097aa44d1322c55f29 fd50d01f-906a-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=217311 Fakulteta za strojništvo 0 0 0