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Quick Overview

Quartz like probe with three cantilevers for contact mode.

f = 30 & 50 & 90 kHz   |   k = 0.06 & 0.1 & 0.3 N/m   |   tip coating: none

Product Name Price Qty
qp-BioAC (50 Pack)
(Ships in 1-2 Weeks)
qp-BioAC (20 Pack)
(Ships in 1-2 Weeks)
qp-BioAC (10 Pack)
(Ships in 1-2 Weeks)


uniqprobe™ uniform quality SPM probe – Contact or dynamic mode for Biology in dynamic (AC) mode

The NANOSENSORS uniqprobe combines the well-known features of the other NANOSENSORS AFM probe series such as high application versatility and compatibility with most commercial SPMs with the additional advantage of a strongly reduced dispersion of force constant and resonance frequency. The unsurpassed uniformity of the mechanical characteristics of the uniqprobe series is particularly important for applications, where a large number of probes with known and near identical force constants or resonance frequencies are needed. The sensors of the uniqprobe series are especially adapted for molecular biology, biophysics and quantitative nano-mechanical studies.
The reflex gold coating deposited on the detector side of the cantilever covers only the free end above where the tip is located. Main advantages of the uniqprobe coating are considerably less cantilever bending and reduced drift particularly for measurements in liquid environments.
NANOSENORS qp-BioAC AFM probes are designed for mainly dynamic mode AFM imaging in air or liquid environments, but can also be used in contact mode. These probes feature three different rectangular cantilevers on one side of the support chip. The uniqprobe BioAC type unites fairly high resonance frequencies with low force constants. The combination of these characteristics leads to stable, low noise and fast measurements with reduced tip-sample interaction. The probe offers unique features:

  • Small dispersion of force constant and resonance frequency
  • Typical tip height 7µm
  • Typical tip radius of curvature smaller than 10nm
  • Stress free cantilevers with considerably less bending
  • Tip and cantilevers are made of a quartz-like material
  • Reduced drift for applications in liquid environments
  • Tip repositioning accuracy of better than ± 8 µm (in combination with Alignment Chip)
  • Chemically inert

    Special handling information for NANOSENSORS™ uniqprobes:Due to their unique geometry the tips of the uniqprobes are more susceptible to tip damage by electrostatic discharge (ESD) than other Silicon-SPM-Probes.

    Cantilever CB1 Specification
    Spring k (N/m 0.3 (0.15 - 0.55)
    Freq (kHz) 90 (65- 115)
    Length (µm) 40 (35-45)
    Width (µm) 20(18- 22)
    Thickness (µm) 0.4(0.37 - 0.43)
    Shape rectangular 
    Material Quartz-like
    Reflex Coating (nm) partial Au

    Cantilever CB2 Specifications
    Spring k (N/m 0.1 (0.06 - 0.18)
    Freq (kHz) 50 (35- 65)
    Length (µm) 60 (55-65)
    Width (µm) 25 (23- 27)
    Thickness (µm) 0.9 (0.87 - 0.93)
    Shape rectangular 
    Material Quartz-like
    Reflex Coating (nm) partial Au

    Cantilever CB3 Specifications
    Spring k (N/m 0.06 (0.03 - 0.09)
    Freq (kHz) 30 (24- 36)
    Length (µm) 80 (75-85)
    Width (µm) 30 (28- 32)
    Thickness (µm) 0.9 (0.87 - 0.93)
    Shape rectangular 
    Material Quartz-like
    Reflex Coating (nm) partial Au

    Tip Specifications
    Tip radius (nm) 10
    Tip height (µm) 7 +/- 1
    Front angle (°) 15 +/- 3
    Back angle (°) 15 +/- 3
    Side angle (°) 15 +/- 3
    Tip shape concave cone
    Tip material Quartz-like
    Tip coating (nm) none
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Additional Information

Tip Radius 10
Tip Radius 5-10 nm
Spring Constant 0.06
Frequency 30
Compatibility No
Manufacturer Nanosensors

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