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Showing 1 to 20 of 45 for “"kapton"”.
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Studies of Radiation Effects in Three High Polymers
<p>Three high polymers, Mylar®, Ultem®, and Kapton®, were irradiated to total doses of 1, 5, and 9.5 gigarad using 1-MeV electrons. The glass transition temperatures (T<sub>g</sub>) of the materials before and after irradiation were measured using an AC electrical dissipation factor technique. From …
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Laser Processing of Polyimide on Copper
… The processed samples include freestanding Kapton with no adhesive layer, freestanding Kapton with an adhesive layer, and Kapton with adhesive layered on copper. The laser processing used a single laser shot with the parameters being varied over a series of shots fired. The effect of the …
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The Effects of Atomic Oxygen on the Outgassing Properties of Spacecraft Materials
… materials were tested: aluminum coated 1.0 mil Kapton tape, 2.0 mil Kapton film coated with ITO on one side and aluminum on the other, and 2.0 Kapton film coated with aluminum. The materials were exposed to an average AO fluence of 1.33 ± 0.130 × 1021 atoms/cm2 for AO testing. The TML and CVCM …
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An AFM study of the surface of a polymer film bombarded by low energy gaseous ions
… room temperature. The 2 x 2 cm$\sp2$ polyimide Kapton films, with measured thickness of 62 micron, is bombarded by selected ions from an incident direction normal to target surface. The penetration depth of ions at this energy level is of a few microns which is much less than the thickness of …
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Microfabrication and electrical characterization of lead-free sodium potassium niobate thin film ribbons on conformal substrates
… on various conformal substrates such as Kapton, Ecoflex, Polydimethylsiloxane (PDMS), and Silbione/fabric and characterized electrically using the Keithley Semiconductor Parameter Analyzer. In this initial experimental evaluation, it was found that at the frequency of 100 KHz, the …
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Magnetic Resonance Studies of Free Radicals Generation and their Impact in Different Polymers
… of the material is being studied.</p> <p>Kapton Polyimide (PI, Kapton®) used in space missions as a thermal management blanketing material makes it vulnerable to the ionic, proton and electronic radiations when exposed to outer space environment. Modification of PI’s chemical structure …
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Material transfer associated with the contact between polymer and silicon surfaces
… from polymeric films (Polyethylene, Teflon, and Kapton) and ceramics (quartz, sapphire and ruby). The variables of interest for the material transfer phenomenon were identified using analysis of elastic contacts (Hertzian) and adhesion. Experimental results suggest that the material transfer was …
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Surface characterization of LDEF materials
… XPS analysis of the polymer systems, such as Kapton®, polyimide polysiloxane copolymers, and fluorinated ethylene propylene thermal blankets on the backside of the LDEF revealed significant changes in both the surface composition and surface chemistry as a result of exposure to the low-Earth …
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Thin film amorphous silicon cells by inductive PECVD, with a view towards flexible substrates
… glass to flexible polished stainless steel and Kapton substrates, requiring inversion of the cell orientation. A 1cm<sup>2</sup> cell on a steel substrate was found to be functional under illumination and was 0.27% efficient. A 1cm<sup>2</sup> cell was deposited onto Kapton but was only measured …
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Development of a Direct-Measurement Thin-Film Heat Flux Array
… thermocouples deposited onto a thin Kapton® polyimide film. The HFA is capable of withstanding temperatures up to 300 °C and produces signals of 42 μV/(W/cm²). As a result of its thin film construction, the HFA has a first order time constant of 32 ms. Calibrations were completed to …
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Micron-scale flexible electronics for detection of reactive oxygen species for in vivo applications
… of titanium followed by a layer of gold on a Kapton™ surface. Prior to deposition, oxygen plasma was used to planarize the Kapton surface for a smoother gold surface. Typical lithography procedures were used to pattern gold electrodes, yielding up to four electrodes. Delamination of gold from …
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Surface characterization and adhesion of plasma-modified polyimides
… an aromatic thermoplastic polyimide, and Kapton®, a poly(pyromellitimide) were exposed to oxygen, argon and ammonia plasmas as pretreatments for adhesive bonding. Chemical changes which occurred in the surface as a result of the plasma treatments were investigated using x-ray photoelectron …
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Positron Annihilation Lifetime Spectroscopy Methodology and Application to Perovskite Oxide Materials
… commonly deposited on, and supported by, a thin Kapton foil. As part of this work variable energy PALS (VE-PALS) performed at the Munich Research Reactor FRMII on Kapton foils were analysed. This enabled one of the source correction terms to be unambiguously determined. In consequence, the source …
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Assessing the tensile and fatigue behavior of aerosol jet printed nano silver particle traces on polyimide substrates
… on two common polyimide substrates, Upilex and Kapton.</p> <p>There are many different aspects to electromechanical testing of flexible interconnects, but this work focuses on the effects of tension and cyclic loading. In comparison to the much more widely researched electroplated copper or …
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Gas electron multipliers and a scanner for automated quality control
… each hole's outer copper diameter and inner Kapton diameter and locate and geometrically classify any foil imperfections. The scanner has been used to characterize GEMs recently manufactured by Tech-Etch. These scans indicate a general absence of etching defects, but measured diameter …
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Inkjet printing multifunctional chromatic sensors and chromism study
… on different substrate materials, such as paper, Kapton and Mylar film. In order to further study alkyl side chain effect on the sensitivity of PDA, Density Function Theory (DFT) simulation is conducted, and the results show that the torsion of C-C bond is closely related to the length of the …
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Development of a Novel, Manufacturing Method of Producing Cost-Effective Thin-Film Heat Flux Sensors
… materials onto a thin-film polyimide Kapton® substrate. The semi-automated production capabilities of this manufacturing process significantly decrease the cost of producing thin-film heat flux sensors while still maintaining acceptable performance characteristics. Material testing was …
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Piezoresistive Hybrid Nanocomposites for Strain and Damage Sensing: Experimental and Numerical Analysis
… printed nanocomposites on both polyimide film (Kapton) and paper with high device-to-device reproducibility. The ink formulation, as well as the substrate surface treatment, have been optimized to obtain conductive and piezoresistive devices. The author shows the effectiveness of the printed …
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Development of conformal reconfigurable metamaterial-based antennas
… an inkjet-printed dipole antenna on flexible Kapton-foam substrate to be used on lossy host structures. The concept of Artificial Magnetic Conductor (AMC) unit cells is investigated for best impedance and gain performance. When integrated with a dipole radiator, the fabricated AMC-backed …
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