LMA

Veeco-Bruker Multimode 8 AFM

 

Veeco-Bruker Multimode 8 AFM

 

Scanning Probe Microscopies are key enable techniques in Nanosciences and Nanotechnologies, supporting a wide range of multidisciplinary activities.The LMA hosts a multipurpose AFM/STM head mounted on a vibration isolation damping table which covers a broad range of near ambient conditions.

The Multimode 8 from Veeco-Bruker is a Scanning Probe Microscope equipped with KPM (Kelvin Probe Microscopy), c-AFM (conductive-AFM), liquid and electrochemistry cells, PicoForce module for force spectroscopy measurements, variable temperature controller (-22 ºC to 200 ºC), Torsion mode head and QNM (Quantitative Nanomechanical Property Mapping) Peak Force mode.

 


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What kind of information can be obtained with these instruments?

The following information can be obtained with our SPM instruments:

  • Surface morphology. Topography with resolution below 1 nm.
  • Electrical conductivity (c‐AFM). Quantitative local electrical resistance measurements.
  • Mechanical properties (QNM Peakforce). Quantitative local measurement of the elastic modulus, adhesion, stiffness, energy dissipation and deformation on surfaces.
  • Local electrical potential (KPM). Qualitative measurements of local charge distribution.
  • Magnetic properties (MFM). Magnetic properties analysis under magnetic fields.
  • Closed loop long range Z-scanner (Pico Force) for force spectroscopy on large biomolecules
  • Nanomechanical studies by using Single Molecule Force Spectroscopy. Pull‐push experiments for inter and intra-molecular force measurements, with 1 pN resolution.
  • Electro-chemical properties (EC‐SPM). Study of chemical reactions on surfaces under controlled environments.
  • Piezo-electric properties (PFM). Using the tip as electrode and deformation sensor.
  • Thermal dependence. Capacity to measure in the 250 K to 500 K range.
  • Topography based in ambient Scanning Tunnel Microscopy (STM).

 

Sample requirements

The sample should be immobilized onto a flat substrate (for instance, biomolecules should be immobilized onto a mica surface via adsorption or via a covalent procedure).

The sample should exhibit a lower roughness than the range of the piezo scanner.

The size of the sample should be small enough to fit inside of the microscope, around 1 cm2 in surface and 0.5 cm in thickness.

Types of samples that can be studied with the environmental SPMs include:

  • Biological samples (DNA, proteins and peptides; cells, viruses and bacteria; biological tissues, etc.).
  • Organic and inorganic thin films.
  • Gels and Polymers.

Technical Specifications

Enviroment: Air, liquid and electrochemical cell
Temperature range: [-35, 200] ˚C
Rango escáner:  J) 200 µm x 200 µm x 5 µm E) 12 µm x 12 µm x 3 µm
Magnetic field: No

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