Dr. Michiel Willemse is leading the team developing the inkjet printing machine at TNO. He says, “The process is unique in its capability to print highly viscous, UV curable, resins. Material formulations with viscosities up to 500 mPa•s (at ambient temperature) have been printed successfully. This offers the opportunity to print products with unequalled mechanical properties when compared to any other printing systems.”
The High Viscosity Inkjet Printing machine is also capable of printing multi-materials simultaneously. Currently, most additive manufacturing machines are only capable of printing one type of material. Not only is the TNO inkjet process capable of printing multi material, it also enables the mixing and grading of materials in any combination that is desired. This will enable the manufacturing of products with two or more materials that are graded and there will be no distinct boundary between the materials. This will result in products with unique mechanical properties. To enable the modelling of products with multi-material and graded structures, TNO has developed a CAD modeller known as Innerspace. InnerSpace enables a designer to define material property distributions and also the distribution profile. The software uses the STL file as the source file and the STL model defines the outer boundary of the object. It can define the material distribution for a whole object or just part of the object at any location. The data files from InnerSpace are very small and thus easy to transfer.
Within Custom Fit, the system is designed and used to print bio-compatible materials; the next step for the project would be to print scaffolds for implants using bio-resorbable materials, with varying porosity and graded inclusion of e.g. growth enhancers and anti-biotics. Dr. Willemse says, “The big challenge is the further development of the concept of printing bio-resorbable implants. Improvement of the machine is a minor effort compared to approval of the medical procedure for modelling a graded implant, printing and sterilising it, and implanting it into a human patient. Given the level of innovation in both technology, material and medical procedures, acquiring the approval from relevant authority such as FDA (Food and Drug Administration) will require a much bigger effort.”
Sunny - Luisa Martínez - Marín | alfa
Electron tomography technique leads to 3-D reconstructions at the nanoscale
24.05.2018 | The Optical Society
These could revolutionize the world
24.05.2018 | Vanderbilt University
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
02.05.2018 | Event News
13.04.2018 | Event News
12.04.2018 | Event News
24.05.2018 | Ecology, The Environment and Conservation
24.05.2018 | Medical Engineering
24.05.2018 | Physics and Astronomy