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The application of Microelectrode and nanoelectrode pushes the frontier of electrochemistry considerably deeper. Nowaday, the fabrication of electrode down to several nanometer becomes a routine, it calls for general purpose potentiostat that is low-cost, portable and sensitive enough to measure several femtoampere current. Our products can satisfy with all these needs.
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FemtoampSense Potentiostat

Features of the FemtoampSense Potentiostat:

  • Potential range: -2.5V ~ +2.5V

  • Measurable current: ±4pA ~ ±2.0mA in 11 sensitivity ranges

  • Sensitivity range:  ±4pA;  ±20pA;  ±100pA;  ±500pA;  ±2.0nA;  ±20nA;  ±200nA; ±2.0uA; ±20uA;  ±200uA; ±2.0mA; 

  • Peak-Peak noise: <4fA at ±4pA sensitivity range

  • Input bias current: < 10fA

  • Reference electrode input impedance: >10 T ohm

  • Bandwidth (measured on a resistor): 5Hz for ±4pA sensitivity; >15Hz for ±20pA sensitivity; >50Hz  for ±100pA;>100Hz  for ±500pA sensitivity; >1kHz for other current sensitivity

  • Can be powered by batterie

  • Techniques:

    • ​​​Cyclic Voltammetry,

    • Chronoamperometry,

    • Differential Pulse Voltammetry,

    • Normal Pulse  Voltammetry, 

    • Cathodic Deposition followed by Linear Scan Voltammetric Anodic Stripping

    • Cathodic Deposition followed by Differential Pulse Voltammetric  Anodic Stripping;

Micrometer-sized  tip

Side view of a Micrometer-sized Tip 

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Top view of a micrometer-sized Tip. 12.5 µm Pt or Au (left); 5 µm carbon fiber (middle); 2 µm Pt or Au (right);

Features:

  • RG value can be as small as 2

  • Pt, Au and Carbon electrodes available

  • Electrode radius: 1µm -12.5 µm

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Side view of Nanometer-sized Tips. Pt or Au (left);  Carbon (middle); Pt dual nano tip (right);

Nanometer-sized  tip

Features:

  • RG value is typically >10

  • 30 nm < Radius < 500 nm

  • Polishable in Al2O3 slurry

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Features:

  • Electrodes are durable 

  • Polishable on sand paper

  • Pt, Au and Carbon electrodes available

  • Electrode radius: 30nm -12.5 µm

Micrometer- or nanometer-sized  electrode

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Side view of Micro- or Nanometer-sized  electrode. 1) Carbon fiber microelectrode; 2) Gold microelectrode; 3) Pt microelectrode; 4) Pt nanoelectrode; 5) Gold nanoelectrode

 FemtoampSense, California, USA

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