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Nano Courses

A repository of courses and units are available for instructors who want to incorporate NSE into their existing course or desire to create a new course. Each Nanocourse or unit contains an introduction, main concepts, notes, lectures and accompanying homework assignments or in-class activities. All materials on the NanoEd Resource Portal are peer-managed and covered by a creative-commons attribution, non-commercial share-alike type licensing.

 
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What Can Electrons Do? - Electron Microscopy
J.G. Zheng and
Prof. V.P. Dravid
Northwestern University, IL, USA


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Unconventional Patterning at the Nanoscale    »» Main Menu


NANOSCALE TOOLS

Fabrication of Masters | Preparation of PDMS Stamps | Cleaving Si Wafers


Fabrication of Masters

Conventionally, masters are fabricated using photolithography. Here we use inexpensive commercially available CD / DVDs as masters. These masters will be used later to prepare PDMS stamps.

MATERIALS:

  • Sony D-R CD / DVD
  • Sharp scissors
  • Tweezers
  • Petri dish

ROCEDURE: (Click on pictures to view the videos)

*You will need QuickTime Player installed on your computer to view the videos.
 Download Player: For Mac | For PC


Cut the CD (the one used is Sony CD-R) with scissors. There is a polycarbonate (PC) surface underneath and a peelable Al layer. Some of them also have an acrylic layer on the top of Al layer and a label as the top surface.

master2


Peel the Al layer off the PC base using tweezers. Save both the Al layer and the PC surface for AFM imaging, placing both patterned side face-up in the petri dish. You can use the PC surface or the Al layer as the master for soft lithography.

 

 

 

 

Authors:
Prof. Teri W. Odom,
Dr. M. Viswanathan and Y. Babayan

Institution:
Northwestern University
Evanston, IL USA

Level:
College and above

In the classroom:
This Course is a video lab manual for hands on fabrication and characterization of materials at the nanoscale. Materials requirements range from simple chemicals, benchtop tools and CDs to necessary access to advanced characterization equipment such as an Scanning Tunneling Microscope.