Polymer actuators with shape memory for cell biology and photovoltaics
Function PrintThisPage() { var sOption="toolbar=yes,location=yes,directories=yes,menubar=yes,"; sOption+="scrollbars=yes,width=750,height=600,left=100,top=25"; var sWinHTML = document.getElementById('contentstart').innerHTML; var winprint=window.open("","",sOption); winprint.document.open(); winprint.document.write(sWinHTML); winprint.document.Shape Memory Polymer - News
Michael Higgins and co-workers at the University of Wollongong in Australia have now made polymers that change reversibly between one form and another on the nanoscale in response to an electrical current ("Reversible Shape Memory of Nanoscale
Smart Tooling, a trademarked product of Spintech Ventures LLC (Xenia, Ohio), uses fiber-reinforced shape memory polymers (SMPs) as a trapped tooling solution for aerospace applications and other markets. The company's reusable Smart Mandrels and SMP
For this purpose the team is exploring a raft of so-called 'smart materials', including shape memory alloys (SMA), electroactive polymers (EAP) and ionic polymer metal composites (IPMC). 'As well as acting as actuators you can train them,
In this example a self-assembled monolayer (SAM) and a polymer film are used to modify the substrate and dielectric surfaces respectively to improve the quality of the printed conductive silver source, drain and gate contacts.
In the end, a combination of black Idenden – a polymer emulsion often used as a vapour barrier coating for pipework – and rolls of hessian scrim have been used for the entire pavilion apart from the bench. First a layer of Idenden is painted over the
Video: Shape Memory Polymers for Active Cell Culture
. The mechanisms through which mechanical interactions between cells and their physical environment control cell behavior are areas of active research. Substrates of defined topography have emerged as powerful tools in the investigation of these mechanisms. Mesoscale, microscale, and nanoscale patterns of substrate topography have been shown to direct cell alignment, cell adhesion, and cell traction forces . These findings have underscored the potential for substrate topography to control and assay the mechanical interactions between cells and their physical environment during cell culture, but the substrates used to date have generally been passive and could not be programmed to change significantly during culture. This physical stasis has limited the potential of topographic substrates to control cells in culture.
Here, active cell culture (ACC) SMP substrates are introduced that employ surface shape memory to provide programmed control of substrate topography and deformation. These substrates demonstrate the ability to transition from a temporary grooved topography to a second, nearly flat memorized topography. This change in topography can be used to control cell behavior under standard cell culture conditions.
1. Isothermal UV-Curing of NOA63
A custom curing chamber was developed using a glass slide (75 mm x 25 mm x 1 mm), a 1 mm thick Teflon spacer, and an aluminum plate (75 mm x 25 mm x 3 mm) as shown in Figure 1. The chamber is held together using small binder clips. Inject the NOA63 into the chamber through a hole in the Teflon spacer using an 18 gauge needle. The NOA63 can be gently heated to ease injection. Place the chamber on a hot plate set at 125 °C and allow to heat to a uniform temperature for 5 min. Pre-cure the NOA63 in a UV lamp chamber (λ = 365 nm; see Table) for 20 min with the lamp 6.5 cm from the surface of the glass. Remove the NOA63 from the chamber while warm using a razor blade. Post-cure the NOA63 under the UV light for 3 h 40 m on the hot plate at 125 °C. Store the NOA63 desiccated at -20 °C.2. Shape Memory Characterization of NOA63
Prepare a dumbbell specimen by hot-pressing a cured NOA63 film with a customized punch (see Table), whose dimensions are shown in Figure 2 . Load the specimen into a dynamic mechanical analyzer (DMA; see Table) with tensile fixture.Shape Memory Polymer - Bookshelf
Shape-Memory Polymers
Table of Contents-Shape-Memory Polymers and Shape-Changing PolymersBy M. Behl, J. Zotzmann, and A. Lendlein-Shape-Memory Polymer CompositesBy Samy A. Madbouly ...Shape memory polymers and textiles
Microelectromechanical systems, advanced materials and fabrication methods
Shape-Memory Polymers Shape-memory polymers are a relatively recent development (Liang, Rogers, and Malafeew, 1991; Hayashi, Ishikawa, and Jiordana, 1993). ...Shape memory materials
A comprehensive account of shape memory materials, now available in paperback.Development and characterization of porous shape memory polymers
A two part resin shape memory polymer (SMP) was fabricated.Day-by-day Info Directory
Shape-memory polymer - Wikipedia, the free encyclopedia
Shape-memory polymers (SMPs) are polymeric smart materials that have the ability to return from a deformed state (temporary shape) to their original ...
Shape-Memory Effect
Extensive technical paper reviewing the development of a new class of shape-memory polymers as a cheap and efficient alternative to shape-memory alloys. Authors: ...
Shape Memory Polymer
This particular plastic is made using a shape memory polymer. It can be readily formed and stretched to any new shape just by using your hands, ...
CRG - Shape Memory Polymer Overview
Shape memory polymer (SMP) has only been around for a couple of decades. ... Unlike shape memory alloys, SMP exhibits a radical change from a normal rigid polymer to ...
Shape Memory Polymer Fibers for Comfort Wear
By making use of the latest basic science of shape memory polymers, ... initial plans for the syntheses of the shape memory polymers are well defined, and ...