Showing posts with label Research. Show all posts
Showing posts with label Research. Show all posts
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Single-atom transistor discovered
Researchers from Helsinki University of Technology (Finland), University of New South Wales (Australia), and University of Melbourne (Australia) have succeeded in building a working transistor, whose active region composes only of a single phosphorus atom in silicon. The results have just been published in Nano Letters.
The working principles of the device are based on sequential tunneling of single electrons between the phosphorus atom and the source and drain leads of the transistor. The tunneling can be suppressed or allowed by controlling the voltage on a nearby metal electrode with a width of a few tens of nanometers.
Original research article has been published in Nano Letters on Dec. 1st, 2009:
Transport Spectroscopy of Single Phosphorus Donors in a Silicon Nanoscale Transistor,
Kuan Yen Tan, Kok Wai Chan, Mikko Möttönen, Andrea Morello, Changyi Yang, Jessica van Donkelaar, Andrew Alves, Juha-Matti Pirkkalainen, David N. Jamieson, Robert G. Clark, and Andrew S. Dzurak,
Nano Lett., Article ASAP, DOI: 10.1021/nl901635j (2009).
http://pubs.acs.org/doi/abs/10.1021/nl901635j
For more information, please contact:
Dr. Mikko Möttönen, Helsinki University of Technology, Department of Applied Physics, firstname.surname@tkk.fi, tel. +358 9 470 22342 or +358 50 594 0950
Prof. Andrew Dzurak, University of New South Wales, Centre for Quantum Computer Technology, a.dzurak [at] unsw.edu.au, tel. +61293856311
The working principles of the device are based on sequential tunneling of single electrons between the phosphorus atom and the source and drain leads of the transistor. The tunneling can be suppressed or allowed by controlling the voltage on a nearby metal electrode with a width of a few tens of nanometers.
Original research article has been published in Nano Letters on Dec. 1st, 2009:
Transport Spectroscopy of Single Phosphorus Donors in a Silicon Nanoscale Transistor,
Kuan Yen Tan, Kok Wai Chan, Mikko Möttönen, Andrea Morello, Changyi Yang, Jessica van Donkelaar, Andrew Alves, Juha-Matti Pirkkalainen, David N. Jamieson, Robert G. Clark, and Andrew S. Dzurak,
Nano Lett., Article ASAP, DOI: 10.1021/nl901635j (2009).
http://pubs.acs.org/doi/abs/10.1021/nl901635j
For more information, please contact:
Dr. Mikko Möttönen, Helsinki University of Technology, Department of Applied Physics, firstname.surname@tkk.fi, tel. +358 9 470 22342 or +358 50 594 0950
Prof. Andrew Dzurak, University of New South Wales, Centre for Quantum Computer Technology, a.dzurak [at] unsw.edu.au, tel. +61293856311
research research & research again
- research takes time. spend long hours performing design, simulations, experiments, testing, and writing.
- read the literature to obtain background for your research topic. the literature will NOT contain the answer to your research question.
- resist the urge to keep reading the literature forever. You must do something. If you do not know where to begin, recreate some work found in the recent literature. In doing so, you are bound to come across open research questions.
- you must perform the research. nobody will tell you every step to make. if they do they will take advantage of you. beware.
- if you encounter a problem in your research, try to figure it out yourself. try approaching the problem from several different scenarios. if you cannot find success, schedule a meeting with your trusted mentor at your convenience. be sure to have specific questions prepared for this session.