Bruker/Anasys NanoIR3


  • Small sample SPM but on motorized stage. Motor and scanner share digital coordinate system that is retained from all images in a session (such that the positions of images collected macroscale distances apart are recorded with microscale precision).
  • Excellent video access plus digital acquisition of video images
  • Acoustic vibration isolation chamber on air table.
  • Closed loop (XYZ) scanner, (50 x 50 x 6 µm); ambient. 
  • Two pulsed IR lasers (must select one):
    • MIRCAT: 4 quantum cascade laser (QCL) chips. Three span a continuous interval from 904-1778 cm-1, 4th spans ~2000-2300 cm-1. All may be used in tandem.
    • Firefly: optical parametric oscillator (OPO) laser spanning ~2700-3600 cm-1.
  • Software Analysis Studio 3.15 provides up to 8 data acquisition channels for imaging, 4 channels for spectroscopy (force curves or IR spectra, etc.).
  • Modes for imaging infrared absorption:
    • Tapping: Uses heterodyne effect, whereby nonlinear tip-sample interaction spawns signal at the sum of the usual feedback oscillation frequency (fundamental flexural resonance) and the pulsed IR laser frequency; the latter is selected such that the detected signal takes advantage of the strong transfer function at higher eigenfrequency. 
      • Simultaneously acquired property imaging via phase (dissipation) and time-averaged cantilever deflection (0th harmonic, can be sensitive to long-range forces such as electrostatic).
    • Contact mode resonance-enhanced presses tip continuously to surface pulses IR laser at contact resonance frequency, which is continually adjusted by a phase locked loop feedback circuit as contact stiffness (thus frequency) may vary from point to point on heterogenous surfaces. 
      • Simultaneously acquired property imaging via sliding friction force (shear dissipation) and contact resonance frequency (vertical stiffness) as tracked by the phase locked loop circuit.
  • Point IR spectroscopy, optional mapping: manually select point locations (on conventional AFM images) and collect IR spectra in tapping, contact resonance or contact chirping (below resonance, monitor cantilever excitation/ringdown per location); or set up 1D or 2D array of locations for automated, programmatic collection of IR spectra in any of these modes. Hyperspectral image construction from 2D arrays.
  • Multiple lock-in amplifiers, contact resonance


  • Gold-coated tips to enhance IR intensity in near-field vicinity of tip.
  • Cryo-microtome for cross sectioning samples.  Double-D clamp for mounting faced samples for AFM (minimal vertical clearance for Multimode, must microtome to <1mm extending stub). 
  • Optional floating of thin-section samples onto flat substrates including ZnS (IR transparent). Can be important to minimize depth of excitation and whereby improve lateral spatial resolution.

Compatible with: