Researchers use multi-wavelength, high-power lasers to develop new multi-materials

Researchers from Nanyang Technological University (NTU Singapore), Panasonic Factory Solutions Asia Pacific Pte LTD (Panasonic) and the Singapore 3D Printing Centre (SC3DP) have developed a new multi-material printer using multi-wavelength high-power lasers for printing smart, flexible devices quickly and seamlessly.

Using lasers of different wavelengths, the multi-material printer performs thermal and chemical reactions that can convert common carbon-based materials (polyimide and graphene oxide) into a new type of high-porosity graphene. The subsequent structures printed using this new graphene are electrically conductive and light. It can also be coated or printed onto flexible substrates such as glass, gold, plastic and fabrics to produce flexible devices.

Electronic devices and components have traditionally been made from strong materials such as silicon, metal and ceramics, but there is growing interest in producing flexible wearable electronics that can twist, bend and fit seamlessly onto different surfaces.

Murukeshan is also a Principal researcher at Singapore's National Additive Manufacturing Innovation Cluster (NAMIC).

3D printed sensors for smart IV infusion bags Recently produced 3D printers have piqued the curiosity of companies including Us-Based multinational manufacturer Jabp-MTI Penang.

Jabil MTI Penang is focused on combining electronics based on 3D printed graphene with intelligent infusion systems. Proof-of-concept has been established with a prototype of an inexpensive intravenous (IV) fluid bag with an embedded printed sensor powered by artificial intelligence. The device tracks the status of the IV drip, controls parameters such as temperature and pressure flow, and transmits the data to a smartphone in real time. This helps medical personnel track, modulate and sense abnormalities abnormally, remotely and successfully.

The research team also evaluated the possibility of integrating 3D printed components with the manufacturing of high-performance electronics such as pressure sensors and heaters, with financial support from NAMIC.

The NTU-Panasonic team wants the recently produced 3D printer to offer functionality and flexibility unmatched by other similar products on the market. Project members say this innovation could revolutionize the field of 3D printing and pave the way for new possibilities for new product innovation and design.

In 2016, with the help of the Industrial Postgraduate Programme (IPP) of the Singapore Economic Development Board (EDB), a project was launched between NTU and Panasonic to build a new multi-material printer. During this time, the project team has applied for two patents, presented at 11 international conferences, and published 11 papers. Three Panasonic scientists and engineers who received their PHDS from NTU were supported.

As the next stage, Panasonic has set up a new facility for laser-based manufacturing systems at its research centre in Singapore to facilitate more concept trials of components manufactured using multi-material printers as part of the "Autonomous Factory" - Panasonic's concept for the Smart Factory of the future. Dr Low and researchers Dr Nicholas Tham and Dr Joel Lim, who are also involved in the joint NTU-Panasonic project, will lead the new facility.

Source: Laser Network