SECM / Electrochemical Probes

SECM/Electrochemical Probes

1. Design

Nanonics is the only provider today of Scanning Electrochemical Microscopy Probes (SECM) probes with normal force sensing capabilities. Electrochemical & SECM probes consist of a tapered metal wire running through a glass nanopipette. These probes are produced with the metal flush with the glass tip and protruding slightly from its aperture. They aid in the performance of localized electrochemistry experiments and can also be used as electron sources.

Scanning Electrochemical Microscopy

Electrochemical and SECM Probe, a wire runs
down a cantilevered nanopipette

SECM probe

SEM of SECM Probe
with wire tip

2. Robust

The most robust probes in the industry as proven in an SEM:

Controlled high pressure

After retraction

3. Specifications

Electrochemical and SECM Probes Specifications
Pipette Material	Borosilicate glass
Electrode Diameter	> 50 nm
Insulator Thickness	> 200 nm
Shank Diameter	1.0-1.5 mm
Taper Length	3-10 mm
Total Length	5 mm- 5 cm
Electrode Material	Pt, Ag or Au (standard), other metals available
Tip Diameter	>100 nm
Starting Wire Diameter	25 or 50 µ
Tip Profile	Flat end to 1µm protrusion (custom designs available)
Cantilever Characteristics
Cantilever Height	50 - 500 µm Deep Trench (probes available)
Cantilever Length	300- 1000 µm
Force Constant	5-20 N/m
Resonant Frequency	20-390 kHz