Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Nanotechnology Columns > Keep Calm and Publish Papers > How to measure nanoparticle size distribution using SEM pic

Pawel Jerzy Wojcik
PhD in Nanotechnology and Nanoscience
New University of Lisbon

Abstract:
A method to manually determine nanoparticle size distribution using multiple length and width measures based on SEM image.

April 29th, 2014

How to measure nanoparticle size distribution using SEM pic

The nanoparticle size distribution can be determined using numerous commercially available instruments. However, such techniques make very convenient but too simplistic assumption that every particle is a sphere. The following tutorial shows how to describe particles size using multiple length and width measures based on SEM (Scanning Electron Microscope) image.

This method provides greater accuracy and allows us to determine surface-to-volume ratio which together with size effects of nanoparticles introduces many size/shape-dependent phenomena such as chemical, electrochemical, electronic, magnetic and mechanical properties. This approach is based on manual measurement of each particle which may be very time consuming. However, it may be the only solution to get accurate particle size distribution and aspect ratio when automated image analysis methods fail (i.e. most cases).

Input SEM image and resulting nanoparticle length and width histograms


Subscribe to KEEP CALM and PUBLISH PAPERS YouTUBE channel that includes a number of graphical video tutorials to scientific publishing.

Leave your feedback and suggestions for future tutorials.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project