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surface:qplus [2016-02-04 11:44]
Michael Schmid suspension is done
surface:qplus [2018-03-27 16:16] (current)
Michael Schmid updated
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====== The QPlus Machine ====== ====== The QPlus Machine ======
-{{ :surface:20151201_qplus_all_4.jpg?360|The QPlus system}}+{{ :surface:20151201_qplus_all_4.jpg?360|The QPlus system in its early days}}
Our newest ultrahigh-vacuum system is a low-temperature STM/AFM. For nc-AFM (non-contact atomic force microscopy) mode, it uses the so-called QPlus sensor, which is a tiny quartz tuning fork with an even tinier tip glued to the end of one of its prongs. Our newest ultrahigh-vacuum system is a low-temperature STM/AFM. For nc-AFM (non-contact atomic force microscopy) mode, it uses the so-called QPlus sensor, which is a tiny quartz tuning fork with an even tinier tip glued to the end of one of its prongs.
-Since the machine is situated in the 5th floor in a noisy city environment, it needs a vibration isolation system: We have suspended the one-metric-ton machine from the ceiling on 36 bungee cords!+Since the machine is situated in the 5th floor in a noisy city environment, it needs an excellent vibration isolation system: We have suspended the one-metric-ton machine from the ceiling on 36 bungee cords! This design also features accurate levelling and has been [[https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018037102|patented]] (For more information, see the [[https://www.youtube.com/watch?v=S3xAwYo7Dqg|Youtube video]]).
-We are still working on improving the preamplifier for the quartz crystal readout. Nevertheless, first results obtained with the system look extremely promising!+We have also added an improved preamplifier ([[https://doi.org/10.1063/1.4993737|design by Giessibl's group]]). Now the machine delivers excellent results; two papers are already published in [[http://www.iap.tuwien.ac.at/www-surface/abstracts/A2017e03.html|PNAS]] ([[http://www.tuwien.ac.at/en/news/news_detail/article/124821/|press release]]) and [[http://www.iap.tuwien.ac.at/www-surface/abstracts/A2018e04.html|Science]] ([[https://www.tuwien.ac.at/en/news/news_detail/article/125584/|press release]])!
surface/qplus.txt · Last modified: 2018-03-27 16:16 by Michael Schmid