HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comments
View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 4/4
Tim
User Rank
Platinum
Re: life cycle concerns
Tim   11/29/2012 12:44:52 PM
NO RATINGS
Good article explaining the detection method for CNT's in soil. Are there toxicity concerns for CNT's in product? Also, are there concerns with the processing method used to add the CNT's to the base material?

naperlou
User Rank
Blogger
life cycle concerns
naperlou   11/29/2012 10:50:27 AM
NO RATINGS
Ann, this is indeed a concern.  Like many of the clever solutions to engineering problems, we have to think of the effect on living organisms, not just humans.  Semiconductor manufacturing also uses many toxic chemicals, for example, and these have to be controlled.  This is true at the point of manufacture and at the point of disposal.  I recall that even the ink used in thermal printers, such as those that are used to print receipts at stores, can be toxic.  We need to be careful in handling exotic, engineered materials.

One question I do have is about the detection method.  Since microwaves are used, I assume that the tests done on earhtworms are destructive.  Soil, even after being exposed to microwaves, is still just soil.  An earthworm on the other hand...

<<  <  Page 4/4


Partner Zone
Latest Analysis
Fifty-six-year-old Pasquale Russo has been doing metalwork for more than 30 years in a tiny southern Italy village. Many craftsmen like him brought with them fabrication skills when they came from the Old World to America.
This homemade laser switch gives you multiple light control options using simple hand gestures.
A new self-contained electro-hydraulic servo axis offers an alternative form of actuation for applications ranging from injection and blow molding to linear positioning.
Banner Engineering has expanded the maximum sensing range for its Q3X laser contrast sensor, making the line well-suited for applications requiring high-speed detection of low-contrast differences.
Multiple defenses to harden network infrastructures and better management of user access are defeating cyber threats that can be physical, procedural, or electronic.
More:Blogs|News
Design News Webinar Series
8/13/2015 11:00 a.m. California / 2:00 p.m. New York
6/25/2015 11:00 a.m. California / 2:00 p.m. New York
6/24/2015 11:00 a.m. California / 2:00 p.m. New York
9/10/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Aug 31 - Sep4, Embedded System Design Techniques™ - Writing Portable and Robust Firmware in C
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Course August 25-27:
Sponsored by MICROMO
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service