Our licensing opportunities tagged with Polymer are shown below.
Reflection losses at optical interfaces are detrimental for many applications in optics and optoelectronics. Antireflection coatings (ARCs) are typically based on the principle that light reflected at the ARC's interfaces interferes destructively to reduce reflection and maximise light transmission. Yet, many widespread applications require robust and dirt-repelling ARCs which can be deposited at low temperatures. Researchers at the University of Cambridge have developed ARCs that show excellent optical properties, are self-cleaning, robust, and can be deposited onto a variety of substrates such as glass or flexible plastic.
Without using dyes or other applied colourants, polymer opals reflect specific colours due to their physical structure. By choosing the spacing of tiny polymer spheres which make up the material, the colour can be tailored to any colour in the rainbow. Stretching the material changes that spacing – and also the colour. So a sample of polymer opal material might stretch from red to green and then blue, reversibly relaxing back to its original colour. Colour changes can even be localised to reveal a pattern such as a logo on stretching.
Researchers at the University of Cambridge, working with colleagues at the LBF Fraunhofer Institute in Darmstadt (formerly DKI), have developed this material system and its manufacturing process so that polymer opals can now be produced in an industrially scalable way and laminated simply onto any appropriate substrate, including fabric, for applications such as security, brand protection and clothing. We are now actively seeking a partner to take this process to the next stage and would welcome contact from companies with interest or experience in this area.
Please see the linked documents for technical information and a more visual demonstration of polymer opals’ colour behaviour.
Nanoporous materials have many applications including the formation of high surface area electrodes that increase the efficiency of fuel cells, photovoltaics, OLED devices and membrane separation technologies, such as desalination.
The main advantage of these materials is that they can be bicontinuous, which means that the porous portions of the material are completely accessible. Currently it is difficult to create such a structure in a controlled manner, as this requires controlled chemistry and long processing times.
This novel invention is a robust method of creating nanoporous materials from copolymeric systems. Through the application of the UV radiation. cross-linking and photodegradation convert an initially spherical, micellar system into a bicontinuous matrix of polymer and voids.
The resulting template can be used as-is or can, with further, simple chemical transformations, be converted into inorganic nanoporous materials that have other exotic functionalities such as water splitting, tunable magnetoelectric properties, and high surface area electrodes.
A manufacturing process for embedding multiple parallel micro-capillaries into flat, flexible polymer tapes and films has been developed. Application areas include chemical and biochemical analysis, medical applications, heat exchangers and pressure sensing applications.
The shape and size of these micro-capillaries can be easily controlled, ranging in diameter from 5 to 500 microns, and having circular, elliptical or diamond cross-sections, allowing transport of liquids or gases at pressures as high as 50 bar. The capillary walls can also be designed to be semi-permeable or catalytic.