Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Silicon wafers which can be aligned ‘like Lego’

11.01.2007
A technique which will allow silicon wafers to be stacked accurately and inexpensively in 3-D structures has been developed by researchers at the University of Southampton.

According to Dr Michael Kraft at the University's School of Electronics & Computer Science (ECS), the major challenge when stacking silicon wafers is to align one wafer to another, matching all the features.

'The alignment needs to be accurate,' commented Dr Kraft. 'At the moment, big chunky machines are being used and the process is being carried out optically. The optical path is long and this introduces errors.'

Dr Kraft and his colleague, Professor Mark Spearing at the School of Engineering Sciences, worked with Dr Liudi Jiang, who is now a Roberts Fellow in the School of Engineering Sciences, to develop what they describe as 'an effective passive alignment technique for the achievement of nanoprecision alignment'.

The approach adopted by the researchers means that the alignment features consisting of convex pyramids and concave pits can be fabricated and chip scale specimens can be successfully bonded after the microfabrication process. An alignment precision of 200 nanometres has been achieved.

'We have demonstrated that we do not need expensive machines to create alignment,' said Dr Kraft. 'Our system will automatically fit the wafers together like Lego.'

The researchers are in the process of submitting a proposal to the Engineering and Physical Sciences Research Council (EPSRC) to enable them to develop their work in this field further.

Helene Murphy | alfa
Further information:
http://www.ecs.soton.ac.uk

More articles from Information Technology:

nachricht Ultra-precise chip-scale sensor detects unprecedentedly small changes at the nanoscale
18.01.2017 | The Hebrew University of Jerusalem

nachricht Data analysis optimizes cyber-physical systems in telecommunications and building automation
18.01.2017 | Fraunhofer-Institut für Algorithmen und Wissenschaftliches Rechnen SCAI

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Helmholtz International Fellow Award for Sarah Amalia Teichmann

20.01.2017 | Awards Funding

An innovative high-performance material: biofibers made from green lacewing silk

20.01.2017 | Materials Sciences

Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery

20.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>