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User Manual

Version 1.1

Atomic Force Microscope

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Summary of Contents for nGauge AFM

Page 1: ...User Manual Version 1 1 Atomic Force Microscope...

Page 2: ...3 1 Where to set it up 6 3 2 How to set it up 7 3 3 Installing the Software 9 4 0 Basic Operation 10 4 1 Software Overview 10 4 2 Preparation and Approach 11 4 3 Imaging 12 4 4 Analyzing Data 14 5 0...

Page 3: ...ollowing warnings and precautions should be observed to ensure the safety of the user and the instrument Use only the power supply provided The driving electronics are designed to accept 7 5Vdc and an...

Page 4: ...ng DOWN in the storage box Use tweezers to pick them up The AFM chip can be placed on a flat surface with the tip facing up The AFM chip can be picked up by hand as long as you don t touch the tip Thi...

Page 5: ...of the cantilever onto a 4 quadrant photodetector that measures any small displacements of the cantilever A piezoelectric Z scanner controls the height of the probe while a piezoelectric XY stage ras...

Page 6: ...mage due to surface charging 3 0 Setup 3 1 Where to set it up The nGauge AFM is small simple and portable and can be set up just about anywhere However for best results it is recommended that you adhe...

Page 7: ...ng it up near sources of electrical noise such as server rooms or rooms operating high power equipment 3 2 How to set it up Setup of the nGauge AFM is very simple 1 Remove the components from the carr...

Page 8: ...nGauge AFM User Manual 8 3 Connect the USB cable to a computer and to the USB connector in the stage 4 Completely unscrew and remove the thumb nut from the stage...

Page 9: ...between the tip and platform 7 Replace the thumb nut and firmly tighten it 3 3 Installing the Software The software required to operate the AFM can be found on the USB stick provided or downloaded fro...

Page 10: ...ftware Overview Launch the software by double clicking on the nGauge program on your desktop or searching for nGauge in the start menu If the AFM is powered up and connected to the computer with the U...

Page 11: ...the platform is low enough Position the sample so that the area to be scanned is directly under the tip Ensure the sample is stable on the sample platform and that it won t tilt roll flutter drift or...

Page 12: ...ls above each point of the scan and ultimately determines the scan speed A smaller number in this field increases the scan speed but if the scan is too fast the resulting image may be blurry or distor...

Page 13: ...s more force A lower setpoint can often give better results but is also more likely to damage the tip or sample and when the setpoint gets too low the imaging performance may suffer A PI controller is...

Page 14: ...want to extract some quantitative data about the sample like the height or width of a specific feature or the RMS roughness of the surface These measurements are best acquired using Gwyddion a powerf...

Page 15: ...ay a 3D view of the image You can rotate or scale this 3D image change the colors and save it Once you are satisfied with the post processed image you can save it as JPG PNG etc using the Save As opti...

Page 16: ...still flat and noisy the AFM chip may be damaged Click on the Menu on the top right of the screen and scroll down and click Read All If any of the values under Resistances is greater than 1000 the AFM...

Page 17: ...The main controls that are visible in each screen should be sufficient for normal imaging conditions However each tab in the navigation contains advanced controls that can extend the functionality or...

Page 18: ...e line is being scanned repeatedly Leveling Direction To correct for the 15 degree tilt of the AFM chip relative to the sample a hardware leveling feature is applied Leveling Direction switches betwee...

Page 19: ...of the Coarse and Fine Z the amplitude of the AC driving signal on the Z actuator and the amount of leveling that is added to each scan PGA values can range from 0 140 ADCs Analog to Digital Converte...

Page 20: ...Port release the USB connection Choose Firmware currently Windows only Opens a window that allows you to locate the firmware update Firmware update files are binary bin files and can be downloaded fro...

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