ResiScope

AFM Electrical characterization

Overview

ResiScope II: AFM Electrical characterization

ResiScope Mode – VO2 sample – 10 µm – Topography and Current signals

Principle

The ResiScope II is a unique system able to measure AFM resistance over 10 decades with a high sensitivity and resolution. It can be combined with several dynamic modes as MFM/EFM (AC/MAC mode) or KFM single‐pass (AC/MAC III) providing several sample characterization on the same scan area.

The measurement is made by applying a DC bias between the sample and a conductive AFM probe (tip at virtual ground). The tip is scanning in contact mode using the laser deflection for the AFM feedback . As an independent measurement, the ResiScope II measures the sample resistance through the High Performance Amplifier (HPA).

Applications :

Photovoltaic           Oxyde characterization
Semiconductors    All conductive characterization

What’s a ResiScope ?

“The World’s Greatest Performance for AFM Electrical Characterization.”

A dual measurement system :

 Resistance measurement
 Current measurement (& IV spectroscopy)
 Compatible with Oscillating mode (Tapping / AC mode )
 Compatible with EFM/MFM or Single-pass KFM
 Resistance 102 ohms to 1012 ohms (10 decades dynamic)
 Output information : R, Log R, Current & I/V Spectroscopy

Principle :

During the measurement, the DSP chooses in real time the best gain to optimize the measurement made by the amplifier module (HPA). This operating condition allows a very high sensitivity on all the range of resistivity at a regular scan speed (AFM) . Contrary to other techniques, the current between the probe and the sample is strongly reduced. This has the result of limiting the local effect of oxidation or electrochemistry and protecting the conductive probe from high current damage.

Carbon black stripe , ResiScope mode, 60µm
Stainless steel, ResiScope mode, 50µm
Organic Solar Cell layer, ResiScope mode, 5µm
SBS, ResiScope mode, 3µm

ResiScope is a smart real-time control of the appropriate ranges to obtain the best measurement (sensitivity and range). It limits the current through tip and sample is limited to prevent any damage. It is more than a simple linear or Log amplifier used for a basic current measurement

AFM mode

“ResiScope Mode, resistance over 10 decades”

ResiscopeTM mode is a mode of contact AFM. A conductive tip saves changes in current and resistance on a wide range with an external amplifier. Curves of current / voltage can be conducted at various locations on the sample. Resistance and conductivity over to 10 decades.

 Resistance & Current mapping
 High sensitivity over the full range
 Compatible with
– Oscillating mode / AC mode
– EFM / MFM or single pass KFM
 Out put information
– R, Log R, Current, I/V spectroscopy

ResiScope principle

Software

Intuitive software

 Easy to use
 Automatic mode selection
 Configurable outputs
 Selectable output scale : R | Log R | Current

Awards

2014 : « Yves Rocard 2014 » Prize (Société Française de physique)

« Yves Rocard 2014 »  prize has been presented by Francis Rocard, astrophysicist who participated in the VEGA Mission (overflight Halley’s comet).

This prize has awarded the « ResiScopeTM II » for its instrumental innovation and the successful of technology transfer between an academic laboratory and a private company.

Based on the work of the thesis of Olivier Schneegans, in collaboration with the LGEP (Laboratory of Electrical Engineering of Paris), ScienTec – CSInstruments have developed an electrical characterization system with wide dynamic range in AFM (Atomic Force Microscopy).

FIEEC Prize for Applied Research at « Rendez-Vous Carnot 2013 »

For the third consecutive year, the Applied Research FIEEC Awards were presented at « Rendez-Vous CARNOT », on Thursday, Oct. 10th, 2013. These prizes reward research works which, through a partnership with an SME, which helped to generate growth and employment.

The second prize rewards three researchers from the Laboratory of Electrical Engineering of Paris (LGEP) for the development of ResiScopeTM II :- Olivier Schneegans Supélec Engineer and Doctor in Physics,
– Pascal Chrétien, Research Engineer,
– Frédéric Houzé Supélec Engineer and Doctor in Physics.This work is enhanced by two SMEs:– ScienTec, specializing in the distribution of scientific equipment dedicated to Surface Analysis and Spectroradiometry
– Concept Scientific Instruments(CSI), SME specialized in AFM instrumentation.Based on the thesis of Olivier Schneegans, they have developed jointly the « ResiScopeTM II », an original equipment able to produce mapping local electrical resistance (current and resistance of 10 decades) from an Atomic Force Microscope.

Specifications
Resistance range10² Ω to 10^12 Ω
Current range (ResiScope mode)50 fA to 1 mA
AFM compatibilityCSInstruments : Nano-Observer
UHV : please contact us
Compatible AFM mode Contact / Tapping / AC mode EFM / MFM / KFM single-pass
Operating Environment Windows® XP. 7, 8, 10, SP3 Framework DotNet 3.5 SP1
One USB port available
Power SupplyAC 100‐240V 47‐63Hz, 1A The appliance must be properly grounded.
Weight (net)2kg

Related products

Soft ResiScope,
ResiScope on soft sample

AFM microscope Nano Observer

Discover ResiScope,
Chapter XII

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