Talk:Photonic crystal

message: I think this should be renamed to "Fabrication" rather than "Fabrication Challenges. While it may be difficult to fabricate photonic crystals for optical wavelength, it is indeed possible using Electron beam lithography, Focused ion beam or simply an advanced integrated circuit process. The challenges can be mentioned, but I think it is more insightful to talk about how photonic crystals are fabricated, rather than simply state that it is difficult to make them. What does everyone think?
vlado4 01:19, 8 April 2007 (UTC)
thread_title: Changing the title of "Fabrication Challenges" Section

message: A wavelength is just a distance. A distance can be unusually large or small, or infeasible with certain devices, but I fail to see how a wavelength can be "exotic". Sounds very much like typical hype associated with pseudoscience, and casts a bad light on the article.
76.67.72.75 (talk)
I would guess that the original author intended that phrasing to reference photonic-crystal fiber's applications to the telecommunication industry, where 'exotic wavelength' would mean 'outside the range of easily transmitted wavelengths.' I agree with your assessment of the word choice and edited the paragraph to remove it, among other things. 
Jeffwack111 (talk) 02:46, 9 June 2022 (UTC)
thread_title: What Exactly is an "Exotic Wavelength"

message: Anyone with a microscope and tools and mirrors and vapor deposition equipment can create it. What do you see as an application of it?
:Are you claiming that Photonic Crystals are easy to fabricate? Also, are you inquiring about applications of Photonic Crystals? Your "it" leaves much ambiguity.
:vlado4 00:51, 8 April 2007 (UTC)
replies: text: An LED is a particularly bad example on your part, since photonic-crystal based LEDs are the basis of a successful company (http://www.luminus.com/) whose products are being used e.g. in new Samsung projection televisions.  —Steven G. Johnson (talk) 05:18, 28 February 2008 (UTC)
thread_title: Bunch of bull

message: Hi all, we (at MIT) have recently published a new advanced-undergraduate level textbook on photonic crystals, and the publisher gave us permission to post a PDF of the book online.  I suspect it would make a useful reference for readers (and editors) of this article (you are already linking my tutorial presentations), but I won't add it myself due to WP:COI.  The book can be found at:
* http://ab-initio.mit.edu/book/
I'll leave it to other editors to decide whether/how to use this book in the article.
—Steven G. Johnson (talk) 05:22, 28 February 2008 (UTC)
thread_title:  photonic-crystal textbook available online 

message: Whoever added this:
"Asher group at the University of Pittsburgh demonstrated the formation of three dimensional photonic crystals in the mid 1980s" to the history section, please add a reference, or I'll remove it.
I did a quick search for Asher at UNIV PITTSBURGH on Web of Science, and found a lot of papers from the 1980s on Raman spectroscopy, but none on photonic crystals.  
Thank you. DMB (talk) 11:07, 4 September 2008 (UTC)
thread_title: Reference needed

message: I haved removed the following paragraph from the end of this section:
In 2003, a team at MIT (Evan J. Reed, et al.) published their discovery of "Unexpected and stunning new physical phenomena..." surrounding photonic crystals. They found that applying shock waves to a photonic crystal will cause frequency shifts in light traveling through the crystal. Secondly, shock waves can be used to trap light within the shock front as it travels through the crystal. Finally, the shock waves can be used to efficiently manipulate the bandwidth of light.[10] Further research has been performed on the frequency shifting phenomena at the Chinese Academy of Sciences.[11]
I checked on web of science, and the search Topic=((shock wave*) AND (photonic* crystal*)) gives only 21 results, and only 19 since 2003.  I am of the opinion that 3 papers per year does not represent a noteworthy enough milestone in the history of photonic crystals to be included here.  If you disagree, please argue otherwise.
I am sure that this (and other interesting photonic crystal phenomena) could merit a section, maybe title "Interesting photonic crystal phenonema".  
DMB (talk) 08:18, 14 September 2010 (UTC)
thread_title: History section

message: I wrote a paper for the IEEE Aerospace Conference in (I believe) 1998 called, "Analysis, Design and Testing of Integrated Structural Radomes Built Using Photonic Bandgap Structures" which presents an analysis technique similar to the plane wave expansion technique (I call it a "Bloch wave - MoM" technique).  This technique is a 3D analog to the spectral domain method for 2D frequency selective surfaces (FSS).  The MoM part vastly reduces the number of Block waves needed for convergence and makes PBG analysis as easy as FSS analysis.  —Preceding unsigned comment added by 173.51.245.17 (talk) 03:02, 16 February 2011 (UTC)
thread_title: One more analysis technique

message: Hello fellow Wikipedians,
I have just added archive links to  on Photonic crystal. Please take a moment to review my edit. If necessary, add  after the link to keep me from modifying it. Alternatively, you can add  to keep me off the page altogether. I made the following changes:
*Added archive https://web.archive.org/20110812170716/http://www.aip.org:80/tip/INPHFA/vol-7/iss-6/p14.pdf to http://www.aip.org/tip/INPHFA/vol-7/iss-6/p14.pdf
When you have finished reviewing my changes, please set the checked parameter below to true to let others know.
Cheers. —cyberbot IITalk to my owner:Online 13:10, 18 October 2015 (UTC)
thread_title:  External links modified