Beam Deflection AFM with QPlus AFMCustomized
(Result of the month 05/2009)

Imaging of rest atoms (raw data) of the Si(111) 7x7 surface with QPlus AFM in an Omicron VT at 50 K (Left image). Line profile showing the height difference of the rest atoms (above).

Conventional cantilevers with typical spring constants of 10 N/m need large oscillation amplitudes to avoid 'jump-to-contact' effects for high resolution imaging. The purely electrical QPlus sensor is based on a quartz tuning fork with a spring constant of ~ 1800 N/m and is the ideal sensor for the detection of short range forces with high resolution. This has been demonstrated by imaging of the rest atoms of the Si(111) 7x7 surface. The QPlus sensor is ideal to be included in STM‘s (VT STM, LT STM, MULTISCAN STM) and also as a complementary sensor for beam deflection instruments.

The Si(111) 7x7 surface with QPlus AFM in an Omicron VT at RT (raw data).

The QPlus sensor is available as AFM option for the VT STM and the VT AFM. It fully replaces the previous needle-sensor technology and provides 2 orders of magnitude better force sensitivity.

Measurement:

A. Bettac, Omicron NanoTechnology

Name and email of corresponding author

a.bettac@omicron.de

This result has been obtained with :
Variable Temperature UHV SPM

RoM Archive

Atomic resolution on the Si (5 5 12) surface
(RoM 03/2010)

Transport through a Single Octanethiol Molecule
(RoM 02/2010)

Constructing an Array of Anchored Single-Molecule Rotors on Gold Surfaces
(RoM 01/2010)

New structural model for the Si(331)-(12x1) surface reconstruction
(RoM 12/2009)

Structure investigation of the (100) surface of the orthorhombic Al₁₃Co₄ crystal
(RoM 11/2009)

qPlus atomic force microscopy of the Si(100) surface:
Buckled, split-off, and added dimers
(RoM 10/2009)

Spatially-resolved, energy-filtered imaging of core level and valence band photoemission of highly p and n doped silicon patterns
(RoM 09/2009)

Contrast inversion in non-contact atomic force microscopy imaging of C60 molecules
(RoM 08/2009)

Mapping the Electronic Surface Potential of Nanostructured Surfaces
(RoM 07/2009)

Detection of Ga suboxides and their impact on III-V passivation and Fermi-level pinning
(RoM 06/2009)

Beam Deflection AFM with QPlus AFMCustomized
(RoM 05/2009)

Morphological work function dependence of rare-earth disilicide metal nanostructures
(RoM 04/2009)

Self-Organized Atomic Gold Chains on Ge(001)
(RoM 03/2009)

Electric field response of a vibrationally excited molecule in an STM junction
(RoM 02/2009)

Playing Pinball with Atoms
(RoM 01/2009)

C₆₀ / Corannulene on Cu(110)
(RoM 12/2008)

Thermal and Mechanical Actuation of Single-Molecule Rotors
(RoM 11/2008)

High-Resolution STM Imaging and Molecular Modeling
(RoM 10/2008)

Configuration dependent critical nuclei in the self assembly of magic cluster
(RoM 09/2008)

Panorama View with UHV Gemini Column and External SED
(RoM 06/2008)

Colour overlay of angular maps from Cu 3d and sp hyprid peaks
(RoM 05/2008)

Molceular Assembly of Rubrene on a Metal/Metal Oxide Nanotemplate
(RoM 04/2008)

Temperature-dependent self-assemblies of C₆₀ on (1x2)-Pt (110): an STM/DFT Investigation
(RoM 03/2008)

Stable room temperature molecular assembly of zwitterionic organic dipoles guided by Si(111)-7x7 template effect **
(RoM 02/2008)

Atomic Resolution on MgO (100) at T=5K using qPlus Non-Contact AFM mode
(RoM 12/2007)

Atomic Manipulation at Room Temperature
(RoM 11/2007)

Atom Manipulation at 5 K!
(RoM 10/2007)

CaF₂ superstructures
(RoM 09/2007)

Influence of the Local Adsorption Environment on the Intra-Molecular Contrast of Organic Molecules in Non-Contact Atomic Force Microscopy
(RoM 08/2007)

Strong Bonding of single C60 molecules to (1x2)-Pt (110): an STM/DFT Investigation
(RoM 07/2007)

Inner-Tube Chirality Determination for Double-Walled Carbon Nanotubes by Scanning Tunneling Microscopy
(RoM 06/2007)

Formation of Iron Oxide Nanoparticles and Thin Films on Au(111)
(RoM 05/2007)

Writing image Patterns with FIB
(RoM 04/2007)

STM constant height image a reconstructed Si(111)7x7 surface
(RoM 03/2007)

Electrical contact melting on nanoscale
(RoM 02/2007)

Imaging XPS with 650 nm Resolution
(RoM 01/2007)

Electronic Properties of Self-Organised Poly(3-dodecylthiophene)Monolayers Probe at the Single Chain Scale by Two-Dimensional Scanning Tunneling Spectroscopy Imaging
(RoM 12/2006)

QPlus Technology for Atomic-Resolution AFM on NaCl at 5K
(RoM 11/2006)

Controlling the Kondo effect of an adsorbed magnetic atom by single-molecule chemistry
(RoM 10/2006)

Visualizing and exploring local electronic structure of a quantum point contact with STM
(RoM 09/2006)

Scanning Electron Microscopy with Polarisation Analysis
(RoM 08/2006)

TOF PEEM
(RoM 07/2006)

4 Probe with SEM Navigation
(RoM 06/2006)

Dendritic to non-dendritic transitions in Au islands
(RoM 05/2006)

Highly Resolved STM and Non-Contact AFM on Ag(√3x √3)/Si(111) 7x7 with Omicron VT AFM and Matrix SPM Control System
(RoM 04/2006)

Chemical Fingerprinting at the Atomic Level
(RoM 03/2006)

Molecular superstructures of thermally unstable molecules deposited with the spray-Jet technique on Au(111) surface
(RoM 02/2006)

Spin-Polarised Low Temperature STM
(RoM 01/2006)

Dynamical oscillation at the α-Sn/Ge(111) surface
(RoM 12/2005)

NanoESCA with sub-µm spatial XPS resolution in the lab
(RoM 11/2005)

Quantum Confinement between Self-Organized Pt Nanowires on Ge(001)
(RoM 10/2005)

4 Probe measurements on "lifted" nanowires
(RoM 09/2005)

Nanoscale gold-fingers
(RoM 08/2005)

Atomic resolved non-contact AFM imaging of Ge/Si(105) surface
(RoM 07/2005)

Direct imaging of the atomic structure inside a nanowire by Scanning Tunneling Microscopy
(RoM 06/2005)

Dance around the Maypole
(RoM 05/2005)

Charge writing of nanocrystalline SnO₂ surfaces
(RoM 04/2005)

Surface Structure of Icosahedral Al-Cu-Fe quasicrystal
(RoM 03/2005)

Adsorption of Acetone at the Ge(100)-2x1 Semiconductor Interface
(RoM 02/2005)

Low Current STM image of a P3DDT film
(RoM 01/2005)

Inelastic Electron Tunneling Spectroscopy on Decanthiol at Elevated Temperatures
(RoM 12/2004)

MFM image taken at a Co/Pt multilayer surface
(RoM 11/2004)

Magnetic NOT - Gate (MFM)
(RoM 10/2004)

Atomically resolved MnSi island grown on a Si(100)-(2 x 1) substrate
(RoM 09/2004)

Scanning Tunneling Spectroscopy on MgB₂ at low Temperatures and High Magnetic Fields
(RoM 08/2004)

Pseudomorphic Growth of a Single Element Quasiperiodic Ultrathin Film on a Quasicrystal Substrate
(RoM 07/2004)

Exploring the Mechanism of Molecular Chirality Transfer via STM
(RoM 06/2004)

In situ High-resolution XPS study of thermal reactions of methyl on Ni(111)
(RoM 05/2004)

In situ High-Temperature STM Studies of Surface Dynamics on Atomically Smooth TiN(001) and TiN(111)
(RoM 04/2004)

Work Function Imaging of Semiconductor Surfaces Using Ultrahigh Vacuum Kelvin Probe Force Microscopy
(RoM 03/2004)

Self-organised, one dimensional Pt nanowires on Ge(001)
(RoM 02/2004)

Segregation of molecular overlayers with different structures on a metal surface
(RoM 01/2004)

The SPA-LEED picture taken at an out-of-phase energy of 128 eV
(RoM 12/2003)

Oxidised Sb crystals on HOPG
(RoM 11/2003)

Spin Polarized Tunneling Induced Luminescence Microcopy (SP-TILM)
(RoM 10/2003)

Standing waves on Au(111)
(RoM 09/2003)

PEEM+IEF: Fermi surface of Cu(001)
(RoM 08/2003)

Coloured SEM images
(RoM 07/2003)

Constant current STM image of a GaAs (110) surface
(RoM 05/2003)

Easter Bunny
(RoM 04/2003)

Manipulation on the atomic scale
(RoM 01/2003)

icosahedral AlPdMn quasicrystal surface
(RoM 12/2002)

SEM in UHV on Insulators
(RoM 11/2002)

The structure of NaCl (100) and KCl (100) single crystal surfaces
(RoM 10/2002)

Single-molecule reaction and characterization by vibrational excitation
(RoM 09/2002)

Coronene on Ag(111) Investigated by LEED and STM in UHV
(RoM 07/2002)

Two-dimensional imaging of electronic wavefunctions in carbon nanotubes
(RoM 06/2002)

Scanning Kelvin Probe Microscopy with VT Beam Deflection AFM
(RoM 05/2002)

Spontaneous Assembly of Perfectly Ordered Identical-Size Nanocluster Arrays
(RoM 04/2002)

Selfassembled quasi periodic Bi nanostructures
(RoM 03/2002)

Oxygen adsorption on Al(111): low transient mobility
(RoM 02/2002)

High Resolution Solid State UPS
(RoM 01/2002)