Scanning Thermal Microscopy Module
Ordering Information

The VertiSense TM Scanning Thermal Microscopy (SThM)
technique uses a specially designed AFM probe with anembedded thermocouple (Thermal Probe) that is raster scannedover a sample. The temperature of the thermocouple ismeasured using the VertiSense TM SThM Imaging Amplifier as afunction of the position and is used by the AFM system togenerate a thermal map in conjunction with the topography.
These most advanced thermal probes exhibit unique feature tomap thermal properties of the sample in Temperature Contrastand Thermal Conductivity Contrast Modes. The thermocouple
sensor is located at the apex of the tip to facilitate true
temperature measurement with less than 50 nm lateral thermalresolution.

Thermal Probe

Uniquely designed and microfabricatedSThM Probe for Thermal andconductivity Mapping.
 Embedded thermocouple
sensor located at the tip apex
 Direct temperature mapping Supports multiple mode ofscanning High lateral thermal resolution
 Measures up to 700 °C.

Ordering Information
Topography

ThermalThermal Conducti vity Contrast Mapof carbon fibers embedded in epoxy in Contact M ode AFM

In Thermal Conducti vity Contrast Mode the thermocouple of theprobe is heated few degrees above the room temperature using theAFM laser (by positioning a small portion of the AFM laser on theback of the thermocouple). When the thermal probe is scanned overthe sample with different thermal conductivity regions, the heat loss
fro m the thermocouple to the sample is monitored as change in thetemperature. The thermocouple and electronics being very sensitive°
can easily detect a change less than 0.01 C.

Silicon Heater Off

SThM Imaging Amplifier

VertiSense TM
Scanning
ThermalMicroscopy (SThM) module is designed
to integrate with most commercial
AFMs in the market.

Silicon Heater On

Temperature Contrast Map
Of microfabricated silicon heater in Non-Contact Mode AFM
Thermal Map of a sample in the Temperature Contrast Mode isacquired by directly monitoring the thermocouple temperature. The
thermocouple can be calibrated using a VertiSense TM Calibrator.

415 Clyde Avenue #102, Mountain View, CA 94043 USA

Tel: 1 650 988 9880, Fax: 1 408 516 4917
E-mail: sales@appnano.com http:// www.appnano.com

Android App based WirelessBluetooth Low Energy Technologyto control VertiSense TM system.
Features include: Step by step instructions.
 Gain control.
 Live temperature display.
 Temperature Calibration
Scanning Thermal Microscopy Module

Compatibility : VertiSenseTM SThM module has

ThermalProbebeen designed to integrate with most commercial
AFMs including those in service with minimum
peripheral requirement. The module utilizes theAFM software to generate Thermal Map.
AFMThe thermal probes are delivered pre-mounted andready to be used. The mounting chip is ensured to becompatible with the AFM. There are two models ofThermal Probes to suite wide range of applications.

SThM Imag ing Amp lifier

Schematic layout of an AFM integrated withVertiSense TM SThM module

Probe Models

PhysicalParameter

VTP-200

VTP-500

Spring Constant (N/ m)

9.9

0.63

Frequency (kHz)

107

17

Length (µm)

200500

Width (µm)

5050

Thickness (µm)

3.5

3.5

Pre-A mplifier

Thermal Properties of VertiSenseTM Thermal Probe
Sensor Type:
Tip ROC :Lateral Resolution:
Temperature Resolution:
Temperature Range:
Thermal Band width:
Thermal latency :Thermocouple at the tip Apex
50 n m<50 nm in contact mode°(i) 0.1 C (@gain100) ;°(ii) 0.01 C (@gain1,000) ;°up to 700 C
up to 30kHz (@ gain 100)
~100µsec (Low Thermal Mass)

VertiSenseTM Thermal Imaging Amplifier
Input:± 10 mV
Output range:± 10 V
Signal Gain:
100x to 10,000x
Noise:<1 nV @ 1 kHz bandwidth
Common-mode rejection: High (>115 dB)
Display:
Real Time Tip Temperature
Adjustable:
Thermocouple Calibration Range

415 Clyde Avenue #102, Mountain View, CA 94043 USA

Tel: 1 650 988 9880, Fax: 1 408 516 4917
E-mail: sales@appnano.com http://www.appnano.com

Contact our distributor in your area orsales@appnano.com for moreinformation.