In our recent (and upcoming) papers we show that solvent swollen films of polydimethylsiloxane (PDMS) exhibit large amounts of telephone cord blister formation. The width of the blisters is set by the elastocapillary length and the sinusoidal length scale is set by a buckling instability. Both are shown to be thickness dependent ( see https://lnkd.in/gupz9Wu3). A non monotonic thickness and solvent dependent blister growth speed is observed. We identify a critical length scale for interfacial crack formation that is set largely by adhesive interactions.
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A common challenge in vapor deposition on polyimide (PI) substrates is the interaction between evaporated copper (Cu) atoms and the PI surface. This interaction can cause PI decomposition and lead to the formation of a thin oxidation layer at the Cu/PI interface, which weakens interfacial adhesion due to poor bonding between the Cu and PI layers. SAICAS is an effective method for assessing adhesion strength for multi-layered structures like RDL, offering precise evaluation of interfacial bonding quality. #SAICAS #AdvancedPackging #Adhesion #PeelingTest #VTC
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Sealing Windows with EPDM Membrane? Let’s save you some time. As well as the traditional paste adhesive, OBEX offer two alternative methods of bonding the EPDM membrane to the window frame or substrate. 1. EPDM with Self-adhesive backing Available with a split release-liner, in roll widths up to 500mm 2. EPDM with Gasket Several different gaskets available that click into your specific profile system Discover more about these time-saving, high-performance EPDM Membranes. https://ow.ly/ClKW50UpUmK
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📣Take a look at our new Application Bulletin 23. Many manufacturers are turning to x-ray fluorescence (XRF) spectrometry to quickly and reliably measure thickness of electrodeposited tin coatings over copper alloy underplates. In this note, we go over how XRFs can be used to accurately and simultaneously monitor the thickness of both plating layers even with common elements in the stack up. Access it on our website: https://lnkd.in/ghPwUDFg #Bowman #XRF #BowmanAnalytics
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Mini Tensometer suitable for testing thin films, single fibre etc
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Blister formation around wedge indentation tests allows quantifying the interfacial adhesion of thin films on substrates. This is a fast and very localized adhesion test. If a wedge indenter and a cube corner indenter are used on one instrument simultaneously it becomes a high throughput test for adhesion with high spatial resoltuion. ⏱
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Smart dimming film (STF) is also known as PDLC liquid crystal film (Polymer Dispersed Liquid Crystal). PDLC is called polymer dispersed liquid crystal in Chinese, and is also known as electronically controlled dimming film, electronic curtains, etc. It is a product based on membrane technology. It mixes rod-shaped polymer liquid crystal (LC) with prepolymer and attaches it to a transparent conductive substrate, making it have the characteristics of both liquid and crystal, as well as significant The photoelectric properties of Let it toggle between transparent and opaque states.
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The Impedans Octiv Poly VI Probe can help identify the optimal etching window by monitoring the bias voltage during plasma etching processes. By carefully tracking the changes in bias voltage, the Octiv Poly system allows for precise detection of etching thresholds, enabling more accurate process control. This approach ensures that you maintain consistent etching quality and achieve desired material removal rates by staying within the optimal voltage range. To know more about the Octiv Poly VI prove click here - https://lnkd.in/dpiHSvwi #rfea #plasmadiagnostics #plasmameasurement #etchingprocess #semiconductorindustry #semiconductormanufacturing
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My newest article is online! This time, we tackled a new class of materials: phosphonates. Phosphonates are known for their chelating capabilities, as well as their potential as antibacterial coatings. They are similar to phosphates, where one P-O bond has been substituted by a P-C instead, bridging the gap between P-containing coatings and C-containing MLD films. This P-C bond is remarkably stable as well, opening the door for C-containing coatings that are stable in harsh environments. However, the vacuum deposition of these coatings is virtually unknown. In this work, two types of new phosphonate-containing films were successfully deposited by Atomic Layer Deposition (ALD). First, a specific vinyl phosphonate precursor was incorporated into the TMA+H2O process, adding P and C to the films. Second, ozonation was employed to modify this precursor in situ, transforming the film structure and yielding several modifications to the deposition behaviour. Check the entire article below! https://lnkd.in/dchUUxpx
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Well done, Luca Panarella, on getting your #nature > #npj paper out! I am proud to share that my colleague, Luca Panarella, had his paper "Evidence of contact-induced variability in industrially-fabricated highly-scaled MoS2 FETs" published in #nature > #npj 2d materials and applications. Luca reports that some single traps, meticulously identified as being in the vicinity of the injecting (source) contact of a 2D FET, can modulate the channel current by up to 40%. Such a dramatic impact on the device current can be only explained by considering the presence of a limited number of low Schottky barrier spots through which carriers are predominantly injected, resulting in non-uniform conduction through the channel. https://lnkd.in/ebbnQYMF #imec #imecAR2T
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