Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 2 / 2
R_Colin_Johnson
User Rank
Blogger
re: Brightest nanoparticles shun quantum
R_Colin_Johnson   1/19/2011 10:55:34 PM
NO RATINGS
Though experiments can only take us so far, but it sounds like you may be onto something that's worth a try!

R_Colin_Johnson
User Rank
Blogger
re: Brightest nanoparticles shun quantum
R_Colin_Johnson   1/19/2011 10:32:10 PM
NO RATINGS
Using both together would be a fluorescent nanoparticle whose size is matched to the wavelength of its emission, thus combining quantum confinement with particle fluorescence. Not sure whether such a hybrid is feasible, but I am sure that it is a lot easier to imagine than to do.

pixies
User Rank
Rookie
re: Brightest nanoparticles shun quantum
pixies   1/19/2011 8:36:31 PM
NO RATINGS
I did not read the original article, but "brightness" seems to be a poor choice of metric. When comparing two emitters, Quantum Efficiency is usually the proper measure. You can have a emitter with a low quantum efficiency but still make it brighter by cranking up the injection current. I guess what the author was trying to say is that since the nanoparticles were not quantized, the Density of State at the emission energy was higher therefore each particle was capable of emitting more photons.

R_Colin_Johnson
User Rank
Blogger
re: Brightest nanoparticles shun quantum
R_Colin_Johnson   1/19/2011 6:41:38 PM
NO RATINGS
Quantum dots used to be the world's brightest nanoparticles, but now Clarkson University has one-upped quantum confinement in favor of encapsulating fluorescent organic nanoparticles inside silicon dioxide. I am sure that quantum-dot researchers will volley back to try and regain the lead. Nevertheless, @NextGenLog I predict that ultra-sensitive detectors using functionalized silica nanoparticles will appear in three years.

<<   <   Page 2 / 2


Flash Poll
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Juggling a Cornucopia of Projects
Max Maxfield
1 Comment
I feel like I'm juggling a lot of hobby projects at the moment. The problem is that I can't juggle. Actually, that's not strictly true -- I can juggle ten fine china dinner plates, but ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
26 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Karen Field

July Cartoon Caption Contest: Let's Talk Some Trash
Karen Field
127 comments
Steve Jobs allegedly got his start by dumpster diving with the Computer Club at Homestead High in the early 1970s.

Jeremy Cook

Inspection Rejection: Why More Is Less in a Vision System
Jeremy Cook
3 comments
Albert Einstein has been quoted as saying, "Everything should be as simple as possible, but not simpler." I would never claim to have his level of insight -- or such an awesome head of ...

Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)