The Laser Zentrum Hannover e.V. (LZH) plans on using laser sintering* to improve the surface of micro-implants, for example for use in the circulatory system (stents), or in the eye, throat, nose, or ear.
The goal of a new research project is to produce a porous structure on chosen areas of an implant surface. On the one hand, this structure can improve attachment to the surrounding tissue, and on the other hand medication can be deposited there.
This is necessary, especially for extremely small implants, since integration into the surrounding tissue is limited, due to the small surface of the implant. Apart from that, the implant surface offers very little room for deposition of medications which can have a positive effect on acceptance of the implant in the human body, or for medications which can prevent infections.
"Laser sintering can be used to modify the implant surface in a very specific manner," explains Matthias Gieseke, engineer at the LZH. "We hope to make the optimal structure for a number of applications."
First of all, the requirements on the surface of the implant have to be defined, followed by investigations on generating the layers using laser sintering, and testing the structured implant. In the course of the project, automation and standardization of the laser sintering process and new materials and implants will also be developed.
The laser sintering project is in cooperation with the Institute for Biomedical Technology at the medical faculty of the University of Rostock, as part of the project "REMEDIS". REMEDIS is supported by the German Federal Ministry of Education and Research, with the goal of using micro-implants to improve the life quality of chronically ill people. The project manager is the Jülich Forschungszentrum.
*Laser sintering builds up a workpiece layer by layer, by melting a powdered material. The individual powder particles absorb the laser energy and are fused together. Almost any three-dimensional shape can be produced using laser sintering.Contact:
Michael Botts | idw
Etching Microstructures with Lasers
25.10.2016 | Fraunhofer-Institut für Lasertechnik ILT
Applying electron beams to 3-D objects
23.09.2016 | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP
Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.
This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
27.10.2016 | Materials Sciences
27.10.2016 | Physics and Astronomy
27.10.2016 | Life Sciences