Results 91 to 100 of about 6,631 (215)

Development of a Two‐Stage Cold Pressing and Tempering Process of Graphite Compound Bipolar Plates

open access: yesFuel Cells, Volume 26, Issue 2, April 2026.
ABSTRACT Proton‐exchange membrane fuel cells (PEMFCs) are considered a key technology for decarbonized energy systems, particularly in combination with sustainably sourced green hydrogen. The functional performance and reliability of core components, such as bipolar plates (BPPs), depends critically on the manufacturing processes. This study explores a
Maschal Hakimiy   +6 more
wiley   +1 more source

Process Control in Micro-Embossing: A Review [PDF]

open access: yes, 2004
— A promising technique for the large-scale manufacture of micro-fluidic devices and photonic devices is hot embossing of polymers such as PMMA. Micro-embossing is a deformation process where the workpiece material is heated to permit easier material ...
Dirckx, Matthew   +4 more
core  

A thermo-mechanically-coupled large-deformation theory for amorphous polymers in a temperature range which spans their glass transition [PDF]

open access: yes, 2009
Amorphous thermoplastic polymers are important engineering materials; however, their non-linear, strongly temperature- and rate-dependent elastic-viscoplastic behavior is still not very well understood, and is modeled by existing constitutive theories ...
Ames, Nicoli M.   +3 more
core   +1 more source

Micro-optical structures for daylighting and led systems★

open access: yesRenewable Energy and Environmental Sustainability, 2017
Different micro-optical structures have been developed for the application in transparent building elements like windows or glazed partitions. In cooperation with the Department of Microstructure Technology, TU Dortmund, as well as partners from research
Mueller Helmut F.O.
doaj   +1 more source

Parallelization of chip-based fluorescence immuno-assays with quantum-dot labelled beads [PDF]

open access: yes, 2005
This paper presents an optical concept for the read-out of a parallel, bead-based fluorescence immunoassay conducted on a lab-on-a-disk platform. The reusable part of the modular setup comprises a detection unit featuring a single LED as light source ...
Brenner, T.   +10 more
core   +1 more source

Fabrication of Functional Plastic Parts Using Nanostructured Steel Mold Inserts

open access: yesMicromachines, 2017
We report on the fabrication of sub-micro and nanostructured steel mold inserts for the replication of nanostructured immunoassay biochips. Planar and microstructured stainless steel inserts were textured at the sub-micron and nanoscale by combining ...
Nicolas Blondiaux   +7 more
doaj   +1 more source

Extrusion Roller Imprinting with a Variotherm Belt Mold

open access: yesMachines, 2014
Although many precision fabrication techniques have demonstrated the ability to produce microstructures and micro-devices with sub 100 nm accuracy, we are yet to see a scalable manufacturing process for large-area production.
Raymond Frenkel, Byung Kim, Donggang Yao
doaj   +1 more source

Efficient Replication of Nanostructured Surfaces

open access: yesCHIMIA, 2002
The defined fabrication of nanostructures on surfaces for the nanosciences today largely relies on tools such as scanning probe instruments or electron- and ion beam systems that are serial writing processes.
Helmut Schift   +2 more
doaj   +1 more source

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