Basel Universität

Pendulum UHV-AFM


Pendulum UHV-AFM is an unique design dedicated to the measurement of extremely small forces in order of aN. In the pendulum geometry the cantilever is hoovering perpendicularly to the sample surface, shearing the nanometer vacuum gap between tip and the sample. In this arrangement very soft cantilevers with spring constants of k≈10-5 - 10-3 N/m can be used as force sensors, avoiding snapping into the contact with the sample. The force sensitivity Fmin is then:


Pendulum AFM operates at cryogenic temperatures (T=5K) and typical quality factors are in the order of Q≈105 - 106. Such high Q together with extremely small k (both at the limit for silicon cantilevers) imply that minimal detectable energy dissipation:


is few orders of magnitude smaller as compared to standard AFM configuration.

Those tiny amount of dissipation (non-contact friction) is successfully measured by means of pendulum AFM. The studies of nanoscale non-contact friction over phase transitions in solids are major scientific activity.
The instrument is mounted in the UHV system and measurements are carried out on atomically clean samples. The preparation and exchanging of the cantilevers and samples are done under UHV conditions. The microscope can be operated in a variable temperature range of 4-300K with the presence of external magnetic field (±7 T). In addition to AFM, the microscope is also furnished with the Scanning Tunneling (STM) line.


Publications related to this instrument:

Mechanical dissipation from charge and spin transitions in oxygen-deficient SrTiO3 surfaces
Marcin Kisiel, Oleg Brovko, Dilek Yildiz, Remy Pawlak, Urs Gysin, Erio Tosatti, Ernst Meyer
Nature Communication, 9, (2018), 2946, pdf.
Recent highlights in nanoscale and mesoscale friction
A. Vanossi,D. Dietzel, A. Schirmeisen,E. Meyer, R. Pawlak,Th. Glatzel, M. Kisiel, S. Kawai, N. Manini
N. Beilstein J. Nanotechnol., 9, (2018), 1995–2014, pdf.
Electronic and frictional properties of Bi2Te3 (0001) surface
D. Yildiz , M. Kisiel, and E. Meyer
13th International Nanoscience & Nanotechnology Conference, 2017-10-22, Antalya, (Turkey).
Energy dissipation peaks on Bi2Te3 studied with pendulum AFM and STM
D. Yildiz, M. Kisiel, and E. Meyer
SNI Annual meeting 2017, 2017-09-07, Lenzerheide, (Switzerland).
Image states and energy dissipation on Bi2Te3 surface
D. Yildiz , M. Kisiel, and E. Meyer
Trends in Nanotribology 2017, 2017-06-26, Trieste, (Italy).
Energy dissipation peaks on Bi2Te3 studied with pendulum AFM and STM
D. Yildiz , M. Kisiel, and E. Meyer
Seminar (Osaka University), 2017-05-24, Osaka, (Japan).
Image States and Energy Dissipation in Bi2Te3 Surface
D. Yildiz , M. Kisiel, and E. Meyer
Seminar (University of Tokyo), 2017-05-23, Tokyo, (Japan).
Image states and energy dissipation on Bi2Te3 surface
D. Yildiz , M. Kisiel, and E. Meyer
The 19th International Scanning Probe Microscopy Conference , 2017-05-16, Kyoto, (Japan).
Non-Contact Friction with Pendulum AFM
D. Yildiz , M. Kisiel, and E. Meyer
Seminar (University of Twente), 2017-04-07, Enschede, (The Netherlands).
Electrostatic, phononic and van der Waals friction on layered materials
D. Yildiz, M. Kisiel, and E. Meyer
DPG Spring Meeting, 2017-03-19, Dresden, (Germany).
Electronic and van der Waals friction on layered structures
D. Yildiz, M. Kisiel, and E. Meyer
Nanoscience in the Snow 2017, 2017-01-25, Zermatt, (Switzerland).
Van der Waals Friction on Layered Structures
D. Yildiz , M. Kisiel, and E. Meyer
Swiss Nanoscience Institute Annual Meeting, 2016-09-15, Lenzerheide, (Switzerland).
Energy Dissipation Mechanism in Layered Structures
D. Yildiz , M. Kisiel, and E. Meyer
10th International Nanoscience Student Conference, 2016-08-02, Baarlo, (The Netherlands).
Energy Dissipation Mechanism On Layered Structures
D. Yildiz, M. Kisiel, and E. Meyer
International Non-contact Atomic Force Microscopy (NC-AFM), 2016-07-25, Nottingham, (UK).
Energy Dissipation Mechanism On Layered Structures
D. Yildiz, M. Kisiel, and E. Meyer
The Second European Workshop on Understanding and Controlling Nano and Mesoscale Friction, 2016-07-04, Riga, (Latvia).
Energy Dissipation in Layered Structures
D. Yildiz, M. Kisiel, and E. Meyer
Swiss NanoConvention 2016, 2016-06-30, Basel, (Switzerland).
Energy dissipation on layered crystals measured by pendulum AFM
D. Yildiz, M. Kisiel, and E. Meyer
International Scanning Probe Microscopy Conference (ISPM), 2016-06-12, Grindelwald, (Switzerland).
Energy Dissipation Mechanism on Layered Structures due to Tip Sample Interaction by Pendulum AFM
D. Yildiz , M. Kisiel, and E. Meyer
(12th Nanoscience and Nanotechnology Conference) Nanotr12, 2016-06-03, Istanbul, (Turkey).
Energy Dissipation Mechanism On Layered Structures
D. Yildiz, M. Kisiel, and E. Meyer
80th Annual Meeting of the DPG and Spring Meeting, 2016-03-06, Regensnburg, (Germany).
Energy Dissipation on Layered Structures
D. Yildiz, M. Kisiel, and E. Meyer
Nanoscience in the Snow, 2016-01-27, Zinal, (Switzerland).
Energy Dissipation on Layered Structures due to Tip Sample Interaction by Pendulum AFM
D. Yildiz, M. Kisiel, and E. Meyer
Swiss Working Group for Surface and Interface Science , 2016-01-22, Fribourg, (Switzerland).
Intricacies Of Moiré Patterns At The Atomic Level: A Scanning Probe Microscopy Perspective
D. Yildiz, M. Kisiel, O. Gurlu, and E. Meyer
Ecotrib2015, 2015-06-25, Lugano, (Switzerland).
Investigation Of Morphological And Electronic Properties Of Moiré Patterns By Scanning Probe Microscopy
D. Yildiz, M. Kisiel, O. Gurlu, and E. Meyer
The International Conference on Understanding and Controlling Nano and Mesoscale Friction, 2015-06-24, Istanbul, (Turkey).
Investigation Of Morphological And Electronic Properties Of Moiré Patterns By Scanning Probe Microscopy
D. Yildiz, M. Kisiel, O. Gurlu, and E. Meyer
Swiss Nano Convention 2015, 2015-05-27, Neuchâtel, (Switzerland).
Scanning Probe Microscopy (SPM) study of moiré patterns on rotated graphene layer on Highly Oriented Pyrolytic Graphite (HOPG)
D. Yildiz , S. Sen, M. Kisiel, O. Gulseren, E. Meyer, and O. Gurlu
DPG Spring Meeting, 2015-03-19, Berlin, (Germany).
Noncontact Atomic Force Microscope Dissipation Reveals a Central Peak of SrTiO3 Structural Phase Transition
M. Kisiel, F. Pellegrini, G. E. Santoro, M. Samadashvili, R. Pawlak, A. Benassi, U. Gysin, R. Buzio, A. Gerbi, E. Meyer, & E. Tosatti
Phys. Rev. Lett., 115, (2015), 046101, pdf.
Dissipation at large separation (Ed. E. Gnecco and E. Meyer)
M. Kisiel, M. Langer, U. Gysin, S. Rast, E. Meyer, D.W. Lee
Fundamentals of Friction and Wear on the Nanoscale (Edited b, Vol. 2, (Chap. 26), (2015), 609-626, pdf.
Non-contact friction
M. Kisiel, M. Samadashvili, U. Gysin, E. Meyer
Noncontact Atomic Force Microscopy (Edited by S. Morita, F.J, Vol.3, (2015), 93-110, pdf.
Giant frictional dissipation peaks and charge-density-wave slips at the NbSe2 surface
M. Langer, M. Kisiel, R. Pawlak, F. Pelligrini, G. E. Santoro, R. Buzio, A. Gerbi, G. Balakrishnan, A. Baratoff, E. Tosatti, E. Meyer
Nature Materials, 13, (2014), 173-177, pdf.
Suppression of electronic friction on Nb films in the superconducting state
M. Kisiel, E. Gnecco, U. Gysin, L. Marot, S. Rast, E. Meyer
Nature Materials, 10, (1), (2011), pdf.
Low temperature ultrahigh vacuum noncontact atomic force microscope in the pendulum geometry
U. Gysin, S. Rast, M. Kisiel, C. Werle, and E. Meyer
Rev. Sci. Instrum., 82, (2011), 023705, pdf.