Posted by
Guy Cox-2 on
URL: http://confocal-microscopy-list.275.s1.nabble.com/Light-reading-on-optical-nanoscopy-tp7578894p7578902.html
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Apart from Mark's suggestions, Synge proposed near-field microscopy in 1928 (Philosophical Magazine 6, 356). It was first demonstrated in visible light in 1984 (D.W. Pohl, W. Denk, and M. Lanz (1984). "Optical stethoscopy: Image recording with resolution λ/20". Appl. Phys. Lett. 44 (7): 651.) though it had been achieved in the microwave region as early as 1972. This is all way before the concept of STED had even been proposed (1994) let alone demonstrated (2002).
It's not fair to say that only 'unlimited' methods are true super-resolution. Both 4-pi (proposed by Cremer & Cremer in 1971) and linear structured illumination are generally regarded (and marketed) as super-resolution. Linear structured illumination was demonstrated two years before STED (Gustafsson, M.G.L. 2000 Surpassing the lateral resolution limit by a factor of two using structured illumination microscopy. Journal of Microscopy 198 (2) , pp. 82-87). I5 microscopy, another technique offering substantial but not unlimited super-resolution, was achieved even earlier (Gustafsson, Agard & Sedat, Journal of Microscopy, 195, 10-16, 1999).
Guy
Optical Imaging Techniques in Cell Biology
by Guy Cox 2nd edition, 2012 CRC Press
http://www.guycox.com/optical.htm______________________________________________
Associate Professor Guy Cox, MA, DPhil(Oxon)
Aust. Centre for Microscopy & Microanalysis, F09,
University of Sydney, NSW 2006
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Phone +61 2 9351 3176 Fax +61 2 9351 7682
Mobile 0413 281 861
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http://www.guycox.net
-----Original Message-----
From: Confocal Microscopy List [mailto:
[hidden email]] On Behalf Of Peng Xi
Sent: Thursday, 23 August 2012 4:59 PM
To:
[hidden email]
Subject: Re: Light reading on optical nanoscopy
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Dear Mark,
I am not sure what you mean by "well before". Super-resolution is a
term that usually refers to techniques that provides theoretically
'infinitely small' resolution, or down to single molecule size. That's why
although confocal is already better (1.4x better) in resolution, it is
generally not treated as super-resolution. And so to multiphoton microscopy.
If you have a better candidate on inventing super-resolution, please let
me and everybody know. I am sure that people are keen to know this.
Sincerely,
Peng Xi
Ph. D. Associate Professor
Dept. of Biomedical Engineering, College of Engineering
Peking University, Beijing, China
Tel: +86 10-6276 7155
Email:
[hidden email]
On Thu, Aug 23, 2012 at 11:51 AM, Mark Cannell
<
[hidden email]>wrote:
> *****
> To join, leave or search the confocal microscopy listserv, go to:
>
http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy> *****
>
> Hmm, A very myopic blog on a subject with a rich past. It was appreciated
> that the Abbe 'limit' was not a limit well before Stephan Hell's work.
> Suggest you might like to research the subject matter a bit deeper?
>
> Cheers
>
> PS I hope others don't start advertising their 'blogs' on this list, we
> ban commercial 'blogs', perhaps this should be extend?
>
>
> On 23/08/2012, at 1:32 AM, Peng Xi <
[hidden email]> wrote:
>
> > *****
> > To join, leave or search the confocal microscopy listserv, go to:
> >
http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy> > *****
> >
> > Dear List,
> > I am blogging on optical nanoscopy, in a very casual mode.
> >
>
http://xipeng.wordpress.com/2012/08/16/how-optical-super-resolution-is-achieved-1/> > It is originally written in Chinese, after I gave a related plenary
> > talk in May 2012. Last talk, in the noon time. And the audiences were
> from
> > all sorts of disciplines, from fresh graduate students to renowned
> > professors. Therefore, I decided to make the talk interesting, and easy
> to
> > follow by everyone. It turns out to be very successful -- much better
> than
> > equations and diagrams. So, I decide to broadcast it by blogging. :)
> > Hope you like it.
> >
> > Sincerely,
> > Peng Xi
> > Ph. D. Associate Professor
> > Dept. of Biomedical Engineering, College of Engineering
> > Peking University, Beijing, China
> > Tel: +86 10-6276 7155
> > Email:
[hidden email]
>
> Mark B. Cannell Ph.D. FRSNZ
> Professor of Cardiac Cell Biology
> School of Physiology& Pharmacology
> Medical Sciences Building
> University of Bristol
> Bristol
> BS8 1TD UK
>
>
[hidden email]
>