Breaking News
News & Analysis

China Takes Lead in Carbon Nanotubes & Graphene

4/25/2014 02:00 PM EDT
7 comments
NO RATINGS
More Related Links
View Comments: Threaded | Newest First | Oldest First
wilber_xbox
User Rank
Author
good article
wilber_xbox   4/26/2014 5:38:33 AM
NO RATINGS
I am surprised to read this article about the production of CNT and Graphene in tonns and the increasing usagage of these materials. Alteast CNT is arguably carcinogenic so their use in that quantity is not good for environment.

HangLai
User Rank
Author
You need to do more market research before you made this comment
HangLai   4/26/2014 7:45:13 AM
NO RATINGS
You need to do more market research before you made this comment!

wilber_xbox
User Rank
Author
Re: You need to do more market research before you made this comment
wilber_xbox   4/30/2014 1:23:24 AM
NO RATINGS
Perceptions are more powerful than reality. And there are so many contradictory research so it is nearly impossible to know the whole truth. I am just putting my opinions about the CNTs  and most of them are based on what i hear or read.

R_Colin_Johnson
User Rank
Author
Re: good article
R_Colin_Johnson   4/26/2014 12:25:18 PM
NO RATINGS
Yes, there have been reports that graphene flakes should be handled carefully like carbon nanotubes have to be handled carefully during facbrication--like many other hazardous materials used in chip fabrication. However, once they are fixed in place on a chip, they appear to be safe. Also there has been some reports that claim carbon nanotubes are a biocompanible material that, when used carerfully, can boost neural functions!

selinz
User Rank
Author
Re: good article
selinz   4/27/2014 10:09:03 PM
NO RATINGS
We have been mining diatomacious earth here in the US for many years. Small particles can be easily inhaled into the lungs, providing a high surface area place for nasty things to happen. From what I've read, the carcinogenicity of CNT's are essentially similar..

prabhakar_deosthali
User Rank
Author
super nano filters?
prabhakar_deosthali   4/28/2014 2:12:11 AM
NO RATINGS
To protect against the inadvertant inhalation of these nano materials while in the manufacturing process is quite tricky as the filters required need to be of supernano size. Are such filters available?

R_Colin_Johnson
User Rank
Author
Re: super nano filters?
R_Colin_Johnson   4/28/2014 2:06:09 PM
NO RATINGS
You are right that filtration of airborne nanoparticles is a tricky process. A recent article explains ins and outs.

Most Recent Comments
michigan0
 
SteveHarris0
 
realjjj
 
SteveHarris0
 
SteveHarris0
 
VicVat
 
Les_Slater
 
SSDWEM
 
witeken
Most Recent Messages
9/25/2016
4:48:30 PM
michigan0 Sang Kim First, 28nm bulk is in volume manufacturing for several years by the major semiconductor companies but not 28nm FDSOI today yet. Why not? Simply because unlike 28nm bulk the LDD(Lightly Doped Drain) to minimize hot carrier generation can't be implemented in 28nm FDSOI. Furthermore, hot carrier reliability becomes worse with scaling, That is the major reason why 28nm FDSOI is not manufacturable today and will not be. Second, how can you suppress the leakage currents from such ultra short 7nm due to the short channel effects? How thin SOI thickness is required to prevent punch-through of un-dopped 7nm FDSOI? Possibly less than 4nm. Depositing such an ultra thin film less then 4nm filum uniformly and reliably over 12" wafers at the manufacturing line is extremely difficult or not even manufacturable. If not manufacturable, the 7nm FDSOI debate is over!Third, what happens when hot carriers are generated near the drain at normal operation of 7nm FDSOI? Electrons go to the positively biased drain with no harm but where the holes to go? The holes can't go to the substrate because of the thin BOX layer. Some holes may become trapped at the BOX layer causing Vt shift. However, the vast majority of holes drift through the the un-dopped SOI channel toward the N+Source,...

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed