One-step selective-wettability modification of PMMA microfluidic devices by using controllable gradient UV irradiation (CGUI)
نویسندگان
چکیده
منابع مشابه
Low-cost fabrication of paper-based microfluidic devices by one-step plotting.
In this technical note, we describe a facile method for one-step fabrication of paper-based microfluidic devices, by simply using commercially available permanent markers and metal templates with specific patterns. The fabrication process involves only a single step of plotting pattern in paper; it can be typically finished within 1 min. The ink marks formed in the patterned paper will act as t...
متن کاملFlow Visualization in Artificial Porous Media from Microfluidic PMMA Devices
Microfluidic polymethylmethacrylate (PMMA) devices for study of particle transport in artificial porous media were designed and microfabricated using hot embossing with a brass mold insert containing a microchannel network with eight layers. After thermal bonding to enclose the microchannel network, a process protocol was applied to successfully remove bubbles in the PMMA device. Characterizati...
متن کاملLow temperature bonding of PMMA and COC microfluidic substrates using UV/ozone surface treatment.
The use of UV/ozone surface treatments for achieving low temperature bonds between PMMA and COC microfluidic substrates is evaluated. Low temperature bond strengths, approaching those of native polymer substrates bonded above their glass transition temperatures, are demonstrated for both thermoplastics. To evaluate the effects of the UV/O(3) surface treatment on the operation of bonded microflu...
متن کاملCharacterisation of PMMA microfluidic channels and devices fabricated by hot embossing and sealed by direct bonding
In this study we fabricated a silicon-based stamp with various microchannel arrays, and demonstrated successful replication of the stamp microstructure on poly methyl methacrylate (PMMA) substrates. We used maskless UV lithography for the production of the micro-structured stamp. Thermal imprint lithography was used to fabricate microfeatured fluidic platforms on PMMA substrates, as well as to ...
متن کاملPreparation of Au and Au–Pt nanoparticles within PMMA matrix using UV and X-ray irradiation
Au and Au–Pt alloy nanoparticles are prepared and patterned at room temperature within the PMMA polymer matrix by the action of 254 nm UV light or X-rays. The polymer matrix enables us to entangle the kinetics of the photochemical reduction from the nucleation and growth processes, when monitored by UV–vis spectroscopy. Accordingly, increase of the temperature to 50 C of the reaction medium inc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Sensors and Actuators B: Chemical
سال: 2018
ISSN: 0925-4005
DOI: 10.1016/j.snb.2018.07.034