L'équipe GenesInk

In a recent study on materials science and nanomedicine, Young-Geun Park and co-workers at the departments of Nanoscience, Nanomedicine and Materials Science and Engineering in the Republic of Korea developed an unconventional 3-D printing approach. The scientists engineered a high-resolution, reconfigurable 3-D printing strategy using liquid metals to form stretchable, 3-D constructs. Using the technique, they formed a minimum line width of 1.9 µm using direct printing and printed patterns for reconfiguration in to diverse 3-D structures while maintaining pristine resolutions.

Read more at phys.org

OLED Diplays are being integrated into a motorcycle jacket. This improved visibility increases driver safety. The use of the roll-to-roll process for OLED production promises a considerable reduction in production costs. This work is done in the frame of the EU-funded PI-SCALE project which is focusing on various applications of OLEDs, including their integration into textile designs.

The technology involves « fabricating the OLEDs on flexible substrates such as plastic films and connecting them to conductive threading for their supply of electrical power. » Quoted in the press release, Claudia Keibler-Willner, head of department at the Fraunhofer FEP, summarises the outcome: « We have taken a major step forward in economical fabrication processes for OLEDs. The results are impressive: the OLED shines very uniformly. » She adds: « The use of the roll-to-roll process also promises considerable cost reductions for future components. By combining printed and vaporized layers, process throughput and production speed can be increased up to 100 times. »

read more at:  phys.org

In recent years, several wearable biosensors for health monitoring have entered our daily lives and captured the attention of scientific and industry communities. Wearable biosensors are significantly attractive thanks to their aptitudes of real-time monitoring of health status.

Sensor patches are implanted onto the human skins with high added value components such as signal conditioning circuits, NFC (antenna) system for data communication, an energy storage system, a display, etc. Wearable sensors are designed for controlling skin fluids such as glucose, lactate, pH, cholesterol, etc., but also pulse rate, temperature, breath rate, respiration, alcohol, activity monitoring, etc. Thus, these biosensors find their applications both in health monitoring and fitness monitoring.

The rapid developments in solution-based nanomaterials processable by printing techniques (inkjet, screen printing, flexography, etc.) offered a promising perspective to the field of wearable sensors by enabling their cost-efficient manufacturing through printing on a wide range of flexible polymeric substrates. Nowadays, GenesInk offers to the market conductive and semi-conductive nanoinks adapted for biosensors applications: i.e., SmartInk, HeliosInk and Tranductive® ranges for antennas, connectivities and displays.

More at: https://www.mdpi.com/

Printing electronics on 25µm thin film is now a reality making 35µm thick FPCB possible.

Printing conductive lines on thin film has always been a problem: substrate wrinkling, poor adhesion on untreated PET, impossibility to print multilayer circuits. These issues have prevented many developments in thin film devices.

Mr. Sano, from SP Solutions in Japan has been working in screen-printed electronics over the past 30 years. He is considered as the expert for screen-printed electronics in Asia. He found a solution to those issues and was able to print successfully several designs on 25µm films.

All current silver paste and ink contains curable binders. During the curing phrase the binders (organic components) shrink and retract the silver ink creating waves on the surface of the film. It results in poor film planarity, poor silver adhesion and reduced conductivity.

In order to avoid these issues, Mr. Sano printed GenesInk’s Smart Screen Inks on 25µm PET sheet from Ootsuki Kougyon (adhesion surface treatment). The results showed excellent adhesion (5B), no wrinkle and superior conductivity (12X vs silver paste).

Smart Screen Inks are based on nano-sized silver particle and do not contain binders. It results in much thinner print, improved line density, no shrinkage, and superior conductivity.

Resistivity of GenesInk print sample was reduced by a factor 12 versus silver flake paste.

GenesInk inks which do not contain any curable binders are “shrinkage-free” inks. This is an important features for printing on thin PET substrates (below 50µm thick).

Therefore it is possible to print conductive patterns at the surface of 25μm thick PET sheets without any troublesome wrinkles or warping which are usually observed with standard silver pastes printed on such thin flexible substrates. If low shrinkage materials (optimized for the manufacture of flexible circuits) are used as dielectric, then it becomes possible to make 35μm thick circuits boards (ink 1µm, dielectric 9µm, PET substrate 25µm).

Printed PET films were carried out at Mino group in Japan, and consisted in printing of Smart Screen R and a standard silver paste with the same mask: standard polyester mesh, mesh count: 420/inch; line pattern width = 500µm, length = 10cm.

On top of the printing possibilities offered by GenesInk Smart Inks is their ability to be bent at very small radius down to 2 – 3 mm, enabling designers to create devices in space with more constraints.

More? Trial it?  email us at contact@genesink.com

Project overview

Despite more than 200 years of development of batteries, the physical limits of battery performance are far from being reached. The complexity of physico-chemical processes inside batteries makes any development strongly dependent on a proper description and monitoring of the inherent evolution and interaction of all materials involved in the functioning of an electrochemical cell. The mean figures of merit (specific energy per mass, volume or cost unit, cyclability) can all theoretically be substantially improved, under the condition of a proper understanding of where and how their limits are reached in today’s industrialized systems. This underlines how much this important branch of our technological future depends on novel and accessible characterization techniques. Given this grand challenge, access to advanced characterisation solutions for the EU industry will be key to accelerate innovation and reduce the large cost share of materials. However, several bottlenecks are preventing access by companies to novel techniques, to which TEESMAT – by launching an Open Innovation Test Bed (OITB) – brings a comprehensive response by leveraging European strengths from 11 Countries and facilitating access to physical facilities, capabilities and services implementing novel characterisation solutions with outstanding capability and performance.

Objectives:

The overall aim of TEESMAT is to lower the barriers of access to industrially relevant, novel problem-solving techniques and services, including characterisation and data analytics for large and small companies. This aim will be pursued by setting up & implementing a financially sustainable Open Innovation Test Bed (OITB) whose techniques and services address such diverse problems faced in the development of clean, safe, high-performance battery solution. The three core objectives of TEESMAT are:

1. Set-up an OITB to provide effective, centrally managed access to advanced materials’ characterisation, modelling and data informatics;
2. Demonstrate the OITB’s added value by solving persistent, high-impact industrial problems;
3. Ensure the OITB’s growth, longevity, financial sustainability and stakeholder support.

Consortium

The TEESMAT consortium gathers 9 Service Providers (SEMILAB, INCORE, CERTH, CEA, ZSW, VITO, ESRF, TECNALIA, SERMA) developing services with the active contribution of 10 Services Users (ZINERGY, LITHOPS, YUNASKO, GENES’INK, SUNLIGHT, NORTHVOLT, ARKEMA, UMICORE, CEGASA and CRF-FIAT) sharing materials characterisation experience in the frame of 24 User Access Cases. TEESMAT is managed and coordinated by CEA and WAVESTONE. EBN is taking in charge communication and dissemination tasks and activities. A total of 14 small and large enterprises from 10 Countries contribute on both sides of the service (offer and demand) along the full value chain. The consortium is offering a complete set of interdisciplinary skills extremely interconnected and transverse for the project.

During project lifetime, the consortium aims at attracting additional EU Services Users and Providers in order to widen the OITB experience and prepare its continuity beyond TEESMAT.

GenesInk role and expectations

GenesInk participates to TEESMAT as a service user. In the framework of TEESMAT, GenesInk is seeking for solutions and answers related to “All printed batteries user case”.

Indeed, GenesInk is developing 2 solutions for Cu metallisation of polymer flexible substrates – electroless metallisation and Cu nanoinks. Cu will be integrated as current collector into printed flexible batteries. Cu is subject to oxidation during processing (deposition and curing). Besides, storage of Cu is a tough task due to oxidation and nanoparticles (NPs) aggregation. Tools are required to follow copper oxidation in liquid phase during storage and inline during processing (deposition and curing). Furthermore, tools are needed to study the quality of the deposited Cu ink and control all defects caused by oxidation and/or contamination by battery layers (electrodes, electrolytes, etc.).

Growing demand of flexible displays in 2019, it all begun with foldable phones, then TV rollup and now a handbag. What does the future hold for flexible displays?

Flexible displays shook the market in 2019 when it all begun with smartphones, followed by roll-up TV’s and now handbags. Is this a trend of 2019? More and more companies are looking out at advanced technologies to add on their product range and Louis Vuitton is one of them.

Luxury fashion giant Louis Vuitton showed off their newly developed handbag with two flexible displays at their cruise 2020 show in New York. They call it the Canvas Display and has shown their loyalist what to expect in the coming future. This bag is a blend of Louis Vuitton’s craftmanship fusion with cutting edge advanced technologies. They have however managed to add two displays in their traditional Louis Vuitton’s iconic bag designs.

Source: https://us.louisvuitton.com/eng-us/articles/cruise-2020-canvas-of-the-future