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# Pi-Gang Luan's blog

## An interesting integral: \int^{\infty}_{-\infty} (sinx/x)^n dx (in Chinese)

Sat, 2011-06-18 09:07 - Pi-Gang Luan- Read more about An interesting integral: \int^{\infty}_{-\infty} (sinx/x)^n dx (in Chinese)
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## Poisson summation formula -- its proof and application (in Chinese)

Wed, 2011-06-15 22:32 - Pi-Gang Luan- Read more about Poisson summation formula -- its proof and application (in Chinese)
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## Feynman's trick II (in Chinese)

Wed, 2011-06-15 22:28 - Pi-Gang Luan- Read more about Feynman's trick II (in Chinese)
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## Feynman's trick I (in Chinese)

Wed, 2011-06-15 22:25 - Pi-Gang Luan- Read more about Feynman's trick I (in Chinese)
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## Lorentz Transformation - A very Brief Derivation

Sun, 2010-06-13 05:44 - Pi-Gang Luan- Read more about Lorentz Transformation - A very Brief Derivation
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## Why thin wire array behaves like a plasma medium? (Metamaterial of negative permittivity)

Sun, 2010-04-04 19:29 - Pi-Gang Luan- Read more about Why thin wire array behaves like a plasma medium? (Metamaterial of negative permittivity)
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## Today is Pi day and Einstein's birthday, again!

Sat, 2010-03-13 19:40 - Pi-Gang LuanGoogle's logo is very cute today !

Today is defined as Pi day, it is also Albert Einstein's birthday. Besides, today is Japaness lover's "white day".

According to Wiki, "In the 1980s the Japanese National Confectionery Industry Association launched a successful campaign to make March 14 a "reply day", where men are expected to return the favour to those who gave them chocolates on Valentine's Day, calling it White Day for the color of the chocolates being offered."

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## My newest metamaterial paper: Power loss and electromagnetic energy density in a dispersive metamaterial medium

Wed, 2009-10-28 10:26 - Pi-Gang LuanPhys. Rev. E **80**, 046601 (2009) [5 pages]

Power loss and electromagnetic energy density in a dispersive metamaterial medium

Pi-Gang Luan*Wave Engineering Laboratory, Department of Optics and Photonics, National Central University, Jhungli 320, Taiwan*

Received 8 March 2009; revised 11 July 2009; published 5 October 2009

## New paper: Cloaking of matter waves under the global Aharonov-Bohm effect

Fri, 2009-05-29 11:49 - Pi-Gang Luan
**Cloaking of matter waves under the global Aharonov-Bohm effect**

**Authors**

**De-Hone Lin and Pi-Gang Luan**

Abstract

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## Einstein's birthday, the PI day

Mon, 2009-03-16 11:19 - Pi-Gang LuanThe day before yesterday, Mar. 14 (3.14), was a great date, because Albert Einstein was born at the same day 130 years ago.

I and my wife enjoyed a very good holiday that day in Taipei. Most interestingly, we found a vivid statue of Einstein made by Ju Ming, stood still in front of the Chen-Ping (eslite) bookstore.

We took several photos around this statue. Here I share one of them with you.

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## My Eprint papers

Fri, 2009-03-13 08:41 - Pi-Gang LuanHi,

These are my Eprint papers. Some have already been published as Journal papers, some have not.

I will discuss some of them here someday.

You can link to http://arxiv.org/ and search my name Pi-Gang Luan in Physics [arxive: All], and these papers would be shown to you. There is an exception, my YBE paper ([Colored solutions of Yang-Baxter equation from representations of U_{q}gl(2)] ). In that case you should type [Pi-Gang Luan] instead of Pi-Gang Luan to find the paper.

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## My Chinese blogs and My Photonic Crystal Book

Fri, 2009-03-13 07:59 - Pi-Gang LuanHello,

If you can read Chinese, you can visit my Chinese Blogs as follows.

http://www.blogtw.com/blog.php?user=pgluan

http://tw.myblog.yahoo.com/pgluan2005/

Besides, I and my colleague (Prof. chen) published a Photonic Crystal book: "Photonic Crystals -- From butterfly wings to nanophotonics" in 2005.

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## This is my first 2009 article

Fri, 2009-03-13 03:01 - Pi-Gang LuanNow I come here again.

From now on I want to share with you my research experiences and personal opinion on time dependent quantum system, photonic/sonic crystals, and metamaterials. I would also like to write some articles on science teaching stuff.

I come from Taiwan. Usually I speak chinese, and have no many oppernituties to practice my English, so I wish someone can help me to improve my English. Thanks !

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## Here is a good place

Tue, 2007-10-30 10:31 - Pi-Gang LuanHi,

It's the first time I visit here. I find here a wonderful place.

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