Kohls, Niko; Walach, H.; Lewith, G. (2008)
The Archive for the Psychology of Religion, 31, 1-18., 1-18.
Funke, Susanne A.; Birkmann, Eva; Henke, Franziska; Görtz, Philipp; Lange-Asschenfeldt , Chtistian ; Riesner, Detlev; Willbold, Dieter (2008)
Funke, Susanne A.; Birkmann, Eva; Henke, Franziska; Görtz, Philipp...
Rejuvenation Research 2008 (11), 315-318.
Urban Research Institute, et. al.; Markert, Michael; Winter, Georg (2008)
2008, 1-64.
Kohls, Niko; Walach, H. (2008)
Newsletter 25. Spirituality and Psychiatry Special Interest Group, Royal College of Psychiatrists. [http://www.rcpsych.ac.uk/college/specialinterestgroups/spirituality/publications/newsletter25.aspx].
Berzlanovich, A.; Kohls, Niko (2008)
WEAAD 2008 in Bavaria, www.inpea/WEAAD.
Walach, H.; Kohls, Niko (2008)
Prävention –Zeitschrift für Gesundheitsförderung, 2, 43 -47. , 43-47.
Birkmann, Eva; Henke, Franziska; Funke, Susanne A.; Bannach , Oliver; Riesner, Detlev; Willbold, Dieter (2008)
Birkmann, Eva; Henke, Franziska; Funke, Susanne A.; Bannach , Oliver; Riesner, Detlev...
Rejuvenation Research 11, 2 | 359-363..
DOI: 10.1089/rej.2008.0697
Wolf, Conrad R.; Gerster, Daniel; Thonke, Klaus; Sauer, Rolf (2008)
DPG Frühjahrstagung 2008 (Berlin).
In the emerging fields of nano- and molecular electronics a strong need for nano-electrodes arises from the wish to contact objects such as quantum dots or single molecules. In this contribution we show the use of a controlled electrochemical deposition scheme to fabricate stable electrodes with spacings below 10 nm. In our experiments we start with a pair of gold electrodes separated by a 200 nm gap prepared by electron beam lithography. These electrodes are immersed into a solution of KI and I2 in ethanol which has been saturated by dissolving gold in it [1]. Both nano-electrodes are connected to the same DC potential, while an AC voltage between them is used to in-situ monitor the conductance with a lock-in amplifier. For the deposition a DC voltage is applied to the counter electrode until the recorded conductance reaches the desired value. It is also possible to reversibly close and open the electrode gap by applying positive and negative voltages, respectively, to the counter electrode. With this technique gaps of around 1 nm can be realized, as conductance measurements after rinsing and drying as well as SEM micrographs show. When the electrodes are grown together slowly, we observe a step-wise increase in the conductance which corresponds to integer multiples of the conductance
quantum 2e2/h.
Walach, H.; Bösch, H.; Lewith, G.; Naumann, M.; Schwarzer, B.; Falk, S.; Kohls, Niko; Haraldsson, E.; Wiesendanger, H.; Nordmann, A.; Tomasson, H.; Prescott, P.; Bucher, H. (2008)
Walach, H.; Bösch, H.; Lewith, G.; Naumann, M.; Schwarzer, B.; Falk, S.; Kohls, Niko...
Psychotherapy and Psychosomatics, 77(3), 158-166., 158-166.
Kohls, Niko; Walach, H. (2008)
European Journal of Psychological Assessment, 24(3), 165-173., 165-173.
Eggert, Thorsten ; Funke, Susanne A.; Andexer , JN; Reetz , Manfred T. ; Jaeger, Karl-Erich (2008)
Eggert, Thorsten ; Funke, Susanne A.; Andexer , JN; Reetz , Manfred T. ...
book chapter in: Protein Engineering Handbook, 1. Auflage 2008.
Kohls, Niko; Hack, A.; Walach, H. (2008)
Mixed Methods Research as a useful tool for thinking out of the box while investigating Exceptional Human Experiences. The Archive for the Psychology of Religion, 30, 155-187., 155-187.
Troi, Alexandra; Benedikter, Manuel (2008)
In: Internationales Anwenderforum Energieeffizienz + Bestand, Energetische Sanierung von Gebäuden, 254–263.
Funke, Susanne A.; Birkmann, Eva; Henke, Franziska; Görtz, Philipp; Lange-Asschenfeldt , Chtistian ; Riesner, Detlev; Willbold, Dieter (2007)
Funke, Susanne A.; Birkmann, Eva; Henke, Franziska; Görtz, Philipp...
Biochemical and Biophysical Research Communications 364, 4 | 902-907.
DOI: 10.1016/j.bbrc.2007.10.085
Buchholz-Schuster, Eckardt (2007)
Zeitschrift für Kindschaftsrecht und Jugendhilfe 2007 (12), 467 ff..
Wolf, Conrad R.; Gerster, Daniel; Thonke, Klaus; Sauer, Rolf (2007)
Workshop Metal Deposition for Emerging Nanoelectronic Applications (Schloß Reisensburg, Günzburg).
In the emerging fields of nano- and molecular electronics a strong need for nano-electrodes arises from the
wish to be able to contact single nano-objects such as quantum dots (QDs) or molecules. There are different methods
known from literature how to fabricate such electrodes, for example electromigration, mechanically controllable break
junctions, or scanning probe techniques, all of which have their specific advantages and drawbacks. In this talk we will
use a scheme of controlled electrochemical deposition which features the following benefits: the electrodes are stable,
no islands are unintentionally created during the fabrication process, and it is relatively straight forward to implement a
third electrode acting as gate.
In our experiments we start with a pair of gold electrodes separated by a 200 nm gap (Fig. 2 (a)) prepared by
electron beam lithography (EBL). These electrodes are immersed into a solution of KI and I2 in ethanol which has been
saturated by dissolving gold in it [1]. Gold covered glass sheets are used as counter and reference electrodes. For the
deposition both nano-electrodes are connected to the same DC potential, while a voltage is either applied directly to the
counter electrode or a potentiostat setup is used. Additionally an AC voltage is applied between the two nano-electrodes
which allows us to in-situ monitor the conductance with a lock-in amplifier (see Fig. 1).
When the sample is immersed into the solution, the conductance rises due to ionic currents. For the deposition
a voltage of typically 60 mV is applied to the counter electrode with respect to the working electrodes. The conductance
is recorded until it reaches a threshold value at which the deposition is stopped. After deposition the gap between the
two electrodes is clearly below 10 nm, as conductance measurements after rinsing and drying as well as the SEM
micrograph in Fig. 2 (b) show.
It is planed to place semiconductor QDs or single molecules between the electrodes to measure their transport
characteristics. Furthermore samples with additional back gate electrode are in preparation which will provide an even
wider access to the electrical properties of nano-objects.
Birkmann, Eva; Henke, Franziska; Weinmann, Nicole ; Dumpitak , Christian ; Groschup , Martin ; Funke, Susanne A.; Funke, Susanne A.; Willbold, Dieter; Riesner, Detlev (2007)
Birkmann, Eva; Henke, Franziska; Weinmann, Nicole ; Dumpitak , Christian ...
Veterinary Microbiology
123, 4 | 294-304.
DOI: 10.1016/j.vetmic.2007.04.001
Kohls, Niko (2007)
Commentary on Cotton, Zebracki, Rosenthal, Tsevat & Drotar (2006) and Wachholtz & Pargament (2006). Spirituality & Health International, 8 (2), p 101–105., 101-105.
Kohls, Niko (2007)
(2007), Network Review, 94, p. 26 - 27, 26-27.
Wiesehan , Katja ; Funke, Susanne A.; Miriam , Fries ; Willbold, Dieter (2007)
Journal of Chromatography B 856, 1-2 | 229-233.
DOI: 10.1016/j.jchromb.2007.06.003
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