Crew A.,University of the West of England |
Lonsdale D.,Uniscan Instruments |
Byrd N.,CCFRA |
Pittson R.,Gwent Electronic Materials Ltd. |
Hart J.P.,University of the West of England
Biosensors and Bioelectronics | Year: 2011
Organophosphate pesticides present serious risks to human and environmental health. A rapid reliable, economical and portable analytical system will be of great benefit in the detection and prevention of contamination. A biosensor array based on six acetylcholinesterase enzymes for use in a novel automated instrument incorporating a neural network program is described. Electrochemical analysis was carried out using chronoamperometry and the measurement was taken 10s after applying a potential of 0V vs. Ag/AgCl. The total analysis time for the complete assay was less than 6min. The array was used to produce calibration data with six organophosphate pesticides (OPs) in the concentration range of 10-5 M to 10-9 M to train a neural network. The output of the neural network was subsequently evaluated using different sample matrices. There were no detrimental matrix effects observed from water, phosphate buffer, food or vegetable extracts. Furthermore, the sensor system was not detrimentally affected by the contents of water samples taken from each stage of the water treatment process. The biosensor system successfully identified and quantified all samples where an OP was present in water, food and vegetable extracts containing different OPs. There were no false positives or false negatives observed during the evaluation of the analytical system. The biosensor arrays and automated instrument were evaluated in situ in field experiments where the instrument was successfully applied to the analysis of a range of environmental samples. It is envisaged that the analytical system could provide a rapid detection system for the early warning of contamination in water and food. © 2010 Elsevier B.V.
Agency: European Commission | Branch: FP7 | Program: CP-IP | Phase: NMP-2007-2.5-1 | Award Amount: 7.91M | Year: 2008
Piezoelectric multilayer actuators performance and reliability needs to be improved to meet the growing demand from end-users with many different types of applications. The high production costs and problems related to obtaining reliable components explain that the utilization of piezo actuators up to now is far from having reached its full potential. Noliac and its partners for the IP are proposing a radical innovation in the piezoelectricity field, based on an enhanced understanding of materials degradation. This will greatly improve the properties of long actuators, and thereby allow end-users to use them for new industrial applications. The actuators shall be able to sustain extreme conditions, including high temperature, humid environment, and high pressure and will provide extreme long-term reliability. The activities are divided in 4 work areas: Research in materials degradation and the development of ceramics, which offer better resistance to crack initiation and propagation and are less sensitive to extreme conditions (WP2-WP4). Two parallel approaches are followed to improve the interdigitated electrode technology for deposition ultra-narrow electrode paths in the laminated piezo materials (WP5-WP6). The development of optimized final components will be insured by the combination of the new piezoelectric materials with the new electrode technology (WP7). Industrial applications for the automotive-, production- and wind power industries. These applications require large size piezoceramic actuators, which can be produced efficiently at low cost with high manufacturing yield (WP8-WP11). The identification of the new piezoelectric actuators is expected to provide a radical innovation in terms of new possible applications in major industrial markets worldwide.
Agency: European Commission | Branch: FP7 | Program: CP-IP | Phase: NMP-2007-2.5-1 | Award Amount: 13.86M | Year: 2008
The MORGaN project addresses the need for a new materials for electronic devices and sensors that operate in extreme conditions, especially high temperature, high electric field and highly corrosive environment. It will take advantage of the excellent physical properties of diamond and gallium nitride heterostructures. The association of the two materials will give rise to the best materials and devices for ultimate performance in extreme environments. Both materials possess durability and robustness to high temperature, radiation and electric field. Diamond material exhibits the best mechanical robustness and thermal conductivity, while GaN presents also high electron mobility, giving high power handling and efficiency. III-N systems have other desirable properties for sensor applications in extreme environments. It is the only highly polar semiconductor matrix that has ceramic-like stability and can form heterostructures. It has the highest spontaneous polarisation with a Curie temperature above 1000C for AlN: a lattice matched III-N heterostructure with a built-in polarisation discontinuity is expected to enable transistor action above 1000C. The packaging and metallisation of an electronic device or sensor are important elements in extreme conditions. Metal contacts must be stable and the package must be thermally compatible with the device requirements and chemically stable. MORGaN proposes a novel technological solution to electron device and sensor modules. Advanced 3D ceramic packaging and new metallisation techniques based on the emerging technology of MN\1AXN alloys will also be explored. As such, the vision of MORGaN for materials for extreme conditions is holistic, involving 2 large industrial partners, 2 industrial labs, 6 SMEs and 13 public research partners. The project includes research, demonstration, management, training and dissemination activities.
Agency: European Commission | Branch: H2020 | Program: IA | Phase: NMP-05-2014 | Award Amount: 6.14M | Year: 2015
The BASMATI project will address the development of active nanomaterial and electrochemical inks for printing technologies such as screen and inkjet printing. The ink formulations will be tested on a case study through printing of a thin film battery. The general objective of the project is to scale-up the ink formulations to pilot line ensuring large volume fabrication of new products with improved properties for printing application. Especially, the particles definition at nanometer size will be one key parameter for the compatibility in ink jet printing. Moreover, knowledge will also be generated on electrochemical inks formulation and additives used in order to stabilize the ink products. The concept of nanomaterials for printing application will be applied to flexible printed electronics and more specifically to printed batteries. These printed batteries are needed as power source at the closest part and the development of printed electronics so as to as to design an all-in-one product allowing better process ability in ink jet process for 3D design and 2D screen printing process. BASMATI will also provide a new source of nanomaterials for the formulation of conductive and electrochemical inks. These nanomaterials will be metallic particle (Ni, Cu, Al) that will be usable for numerous applications of printed electronic on flexible substrate. Another type of nanomaterials will be layered positive active material such as LiNi1/3Mn1/3Co1/3O2 (NMC) and olivine LiFePO4 (LFP). The know-how level reached in BASMATI by research groups and transfer and up-scale to pilots (TRL 6) at SMEs and industry facilities will pave the way for future industrialization of inks formulations production for mass markets such as printed electronics. The compatible formulations in high throughput technologies will ensure a reproducible and reliable process for sophisticated fully digital micro-structured devices. Nanosafety will also be carefully considered in BASMATI project.
IN2TEC Ltd, Gwent Electronic Materials Ltd and NPL Management Ltd | Date: 2013-07-31
An electronic circuit assembly comprises a substrate and circuit components attached to the substrate by means of an electrically conductive adhesive, wherein the adhesive is releasable under predetermined release conditions, whereby to enable the circuit components to be removed from the substrate for recovery or re-use.
Agency: GTR | Branch: Innovate UK | Program: | Phase: Collaborative Research & Development | Award Amount: 116.21K | Year: 2015
Agency: GTR | Branch: Innovate UK | Program: | Phase: Collaborative Research & Development | Award Amount: 286.41K | Year: 2012
This project plans to develop highly conductive carbon based inks to replace the current silver based inks. The price of silver has escalated four fold in the last five years, driven by scarcity and increasing use. Silver is harmful in the waste stream as it is highly soluble and toxic to aquatic life. Silver mining is environmentally and socially unacceptable, whereas carbon can easily be sourced from current recycling, and will have a significantly lower life cycle impact. Carbon based inks have traditionally had poor conductivity, but recent commercial raw materials developments point to an order of magnitude improvement by adding graphene & graphene nano-clusters. The project aims to produce a ten fold increase in conductivity, and develop the processing and design rules for these new materials. The inks are intended for the rapidly expanding smart packaging arena but can be expanded into numerous other markets. This project will facilitate in making an important advance in this area.
Agency: GTR | Branch: Innovate UK | Program: | Phase: Collaborative Research & Development | Award Amount: 155.54K | Year: 2014
With the predicted move from electronics ownership to leasing style, many equipment suppliers are searching for technologies to allow easier in-house recycling. ERICE will develop a full commercial, easy-to-dissassembly, sustainable electronics assembly technology suitable for the circular economy, using recycled materials from an initial demonstrator. The project will develop, manufacture and test materials and techniques for low temperature fabrication using a series of special polymer layers and binders which will allow straight forward, end-of-life unzipping of the constituent parts. After disassembly, the materials and components from this demonstrator will be recovered and subsequently reused to fabricate and test a further demonstrator. Building on an earlier successful concept project, the aim is to reuse or recycle over 90% of the materials from the first demonstrator into the second with minimal energy usage. It is antipated that this level of recovery and reuse will represent a world first for the electronics manufacturing industry.Techniques will be developed to allow component assemblies on both sides, significantly increasing the technologies potential markets.
Agency: GTR | Branch: Innovate UK | Program: | Phase: Collaborative Research & Development | Award Amount: 478.50K | Year: 2014
The FUNGI (FUNnctionalised Graphene Inks for Electrochemical Diagnostic Biosensors) project will develop a range of innovative functionalised graphene nano-platelet (GNP) based inks with significantly improved performance to that of conventional carbon inks for biosensor applications. Improved ink conductivity and surface topography will lead to improved measurement sensitivity through increased signal amplitude and linear range. As an alternative to improved sensitivity in low cost applications, improved cost performance may be possible through reduced material usage. Because of their improved measurement sensitivity, these inks may open up a new range of sensor chemistries not previously viable with conventional carbon inks or replace high cost Ag inks in some applications. Innovative metrology of the GNP dispersions and dispersion stability will enable optimum ink formulations to be developed. Characterisation of the cured ink surfaces will enable a better understanding of the role they play in the electrochemical process and also to determine optimum processing parameters for the inks to ensure maximum sensitivity with minimum wastage .
Agency: GTR | Branch: Innovate UK | Program: | Phase: Feasibility Study | Award Amount: 64.51K | Year: 2016
There are an increasing number of electronics applications in aerospace, automotive, offshore, shale gas & power management, which are required to operate at or above 200C. Organic reinforced substrates such as polyimide have maximum operating temperatures of up to 140C, so such applications are forced to use expensive & heavy ceramic technologies. Such assemblies are based on alumina substrates with printed inks fired at ~ 850C. The OrCA project with investigate replacing the alumina with high temperature engineering thermoplastics such as PEEK and utilising silicone based ink systems curing at around 250C. Component interconnect will exploit the ELCOSINT conductive adhesive system developed by the project partners in a recent Innovate funded project. Such an assembly system will benefit from reductions in substrate cost, and assembly weight. Energy cost associated with manufacture will be significantly reduced. In addition the organic substrate will be easier to machine and form into complex shapes and offers the possibility of integrating through-hole components and thermal management solutions. The suitability of such a system to operate continuously at 250C will be explored.