Chemistries and printing approaches for 3D smart objects
National Research Council Canada
3D printing of advanced materials opens up direct avenues to combine structural and functional properties in order to create new or enhanced properties, yet its adoption as a mainstream manufacturing platform for smart objects is hindered by the physical challenges in printing of multiple materials. This presentation will introduce a chemical strategy to generate smart objects by vat polymerization 3D printing that relies on controlled phase separation. The insight gained in controlling material phases allows for a rationalized approach to formulating resins in order to access a wide range of material morphologies for specific applications. The presentation will also describe a printing strategy based on computed axial tomographic (CAL) that offers a unique way to combine disparate materials.
Bio: Chantal Paquet is the Team Lead of the Advanced Materials for Additive Manufacturing group at the Security and Disruptive Technologies Research Center at the National Research Council of Canada. She obtained her PhD in Chemistry with a specialization in polymers and materials from the University of Toronto. She joined the NRC in 2007 to develop superparamagnetic colloidal particles for medical applications. Her current recent interests lie in developing functional materials for additive manufacturing.
Organic Photovoltaics for Indoor Light Harvesting
The growth of the Internet of Things (IoT) is undeniable, with tens of billions of IoT devices are expected to be installed within the coming decade. A significant issue in the growing IoT community is the replacement of batteries in IoT devices, which becomes unrealistic when billions of devices are deployed.
“Indoor photovoltaics” can harvest light from artificial sources and as such they are expected to play a critical role as power supplies for IoT devices. By harvesting indoor light with intensity in the range of 500 lux (office space) and 1000 lux (typical factory), small IoT devices can be powered, (e.g. RIFD tags, temperature sensors) removing the need for battery replacement. Therefore, there is a clear need for indoor photovoltaics which can be mass produced and easily integrated with these kinds of devices.
Among solar cell technologies, organic photovoltaic technology is especially promising for indoor light harvesting, since they (1) have high extinction coefficients in the visible spectrum (2) can be printed onto many substrates with various form factors using large-scale manufacturing techniques and, (3) Exhibit superior performance to silicon solar cells under low-light conditions.
This presentation will provide a brief introduction to the concept of organic electronics and solar cells and will discuss the results of a collaborative study between Brilliant Matters Organic Electronics, The University of Calgary (Dr. Gregory Welch), Laval University (Dr. Mario Leclerc) and The University of Arizona (Dr. Erin Ratcliff) on slot-die coated organic solar cells for indoor light harvesting.