Results 21 to 30 of about 11,199 (255)

Lithographically fabricated SU8 composite structures for wettability control [PDF]

open access: yes, 2014
SU8 is a negative resist which is widely used for the fabrication of micron scale lateral features over a wide range of heights using photolithographic methods.
Newton, Michael   +2 more
core   +1 more source

Rapid Prototyping of Organ-on-a-Chip Devices Using Maskless Photolithography

open access: yesMicromachines, 2021
Organ-on-a-chip (OoC) and microfluidic devices are conventionally produced using microfabrication procedures that require cleanrooms, silicon wafers, and photomasks. The prototyping stage often requires multiple iterations of design steps.
Dhanesh G. Kasi   +9 more
doaj   +1 more source

Separated Type Atmospheric Pressure Plasma Microjets Array for Maskless Microscale Etching

open access: yesMicromachines, 2017
Maskless etching approaches such as microdischarges and atmospheric pressure plasma jets (APPJs) have been studied recently. Nonetheless, a simple, long lifetime, and efficient maskless etching method is still a challenge.
Yichuan Dai   +5 more
doaj   +1 more source

The polymerization of furfuryl alcohol with p-toluenesulfonic acid: photocross-linkeable feature of the polymer

open access: yesPolímeros, 2000
Poly(furfuryl alcohol) with different amounts of oxymethylenic bridges was synthesized using trifluoroacetic and p-toluenesulfonic acid. All polymers displayed a tendency to retain acids.
Martha Principe   +3 more
doaj   +1 more source

Fast Cross-Linking-Characterization of Waveguide-Polymers on Wafers by Imaging Low-Coherence Interferometry

open access: yesProceedings, 2018
This work introduces a novel method to characterize cross-linking differences in spincast polymers for waveguide applications. The method is based on a low-coherence interferometer which utilizes an imaging spectrometer to gather spatially resolved data ...
Christopher Taudt   +4 more
doaj   +1 more source

Shaped Apertures in Photoresist Films Enhance the Lifetime and Mechanical Stability of Suspended Lipid Bilayers [PDF]

open access: yes, 2014
Planar lipid bilayers suspended in apertures provide a controlled environment for ion channel studies. However, short lifetimes and poor mechanical stability of suspended bilayers limit the experimental throughput of bilayer electrophysiology experiments.
Kalsi, S.   +9 more
core   +1 more source

Optimization of Femtosecond Laser Polymerized Structural Niches to Control Mesenchymal Stromal Cell Fate in Culture

open access: yesMicromachines, 2014
We applied two-photon polymerization to fabricate 3D synthetic niches arranged in complex patterns to study the effect of mechano-topological parameters on morphology, renewal and differentiation of rat mesenchymal stromal cells.
Manuela T. Raimondi   +6 more
doaj   +1 more source

Ligand relay catalysis enables asymmetric migratory dearomative annulation of N-heteroarenes

open access: yesNature Communications
Chiral N-spiroheterocycles are privileged yet synthetically challenging scaffolds for ligands, functional materials, and drug discovery. Here we show a cobalt-catalyzed asymmetric migratory dearomative annulation of electron-deficient N‑heteroarenes for ...
Zhiyong Song   +5 more
doaj   +1 more source

Rapid, Low-Cost Production of Multilayer Molds for PDMS Lab-on-Chip Devices

open access: yesEngineering Proceedings
We present a simple, rapid and low-cost multi-layer mold fabrication method for production of polydimethylsiloxane (PDMS) lab-on-chip (LOC) devices. The new approach offers resource-strained researchers access to microfluidic lab-on-chip fabrication for ...
Eldas M. Maesela   +3 more
doaj   +1 more source

Study of optimization condition for spin coating of the photoresist film on rectangular substrate by Taguchi design of an experiment [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2009
There are four parameters concerning the spin coating of a positive photoresist film. This paper focuses on spin coating of the positive photoresist Clariantz AZ-P4620 on a 2x7 cm rectangular substrate.
Nithi Atthi   +5 more
doaj  

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