<span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">Hi, </span><div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">I think we always know what WE do, but not all of what computers do :-(. </span></div>
<div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "><br></span></div><div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">Mohsen, did you relaxed the atoms after the compression? Why d</span><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">id you calculate force and not stress. Have you used a finite nanotube and computed the forces upon the atoms of the edge? Finally, how is defined A in </span><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "> E=(F/A)/((L-L0)/L0) for the case of a single nonotube?</span></div>
<div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">Best regards</span></div><div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">Eduardo</span></div>
<div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "><br></span></div><div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "><span class="Apple-style-span" style="border-collapse: separate; font-family: arial; font-size: small; ">Eduardo Menendez<br>
Departamento de Fisica<br>Facultad de Ciencias<br>Universidad de Chile<br>Phone: (56)(2)9787439<br>URL: <a href="http://fisica.ciencias.uchile.cl/~emenendez" target="_blank">http://fisica.ciencias.uchile.cl/~emenendez</a><div>
<br></div><div>Let's pray for the 33 trapped miners! Four months to rescue</div></span></span></div><div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "><blockquote type="cite">
<div><div class="gmail_quote"><div> </div><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; ">
<div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; "><div>---------- Mensaje reenviado ----------<br>From: Stefano Baroni <<a href="mailto:baroni@sissa.it">baroni@sissa.it</a>><br>
To: PWSCF Forum <<a href="mailto:pw_forum@pwscf.org">pw_forum@pwscf.org</a>><br>Date: Wed, 22 Sep 2010 19:43:15 +0200<br>Subject: Re: [Pw_forum] Young's Modulus<br><div style="word-wrap: break-word; ">For that, also LRT akkows one to know what one is doing ... ;-)<div>
SB</div><div><br><div><div>On Sep 22, 2010, at 7:30 PM, Mehmet Topsakal wrote:</div><br><blockquote type="cite">Dear Eyvaz,<div><br></div><div>I think you omitted one more thing to mention. Brute-force method also allows one to know what he is doing.</div>
<div><br></div><div><br><br><div class="gmail_quote">On Wed, Sep 22, 2010 at 8:14 PM, Eyvaz Isaev <span dir="ltr"><<a href="mailto:eyvaz_isaev@yahoo.com" target="_blank" style="color: rgb(0, 0, 204); ">eyvaz_isaev@yahoo.com</a>></span>wrote:<br>
<blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; ">
<div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; ">Hi,<br><br>Yes, you are right about Abinit for elastic constants calculations. The main question is which method (Abinit or via total energy) is easier <br>
and less time-consuming. <br><div><br>Bests, <br><div>Eyvaz.</div>-------------------------------------------------------------------<br>Prof. Eyvaz Isaev, <br>Department of Physics, Chemistry, and Biology (IFM), Linkoping University, Sweden <br>
Theoretical Physics Department, Moscow State Institute of Steel & Alloys, Russia, <br><a href="mailto:isaev@ifm.liu.se" target="_blank" style="color: rgb(0, 0, 204); ">isaev@ifm.liu.se</a>, <a href="mailto:eyvaz_isaev@yahoo.com" target="_blank" style="color: rgb(0, 0, 204); ">eyvaz_isaev@yahoo.com</a></div>
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<div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; "><div><div style="word-wrap: break-word; "><div><div><blockquote type="cite"><div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; ">
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</div></span><br>-- <br><div><br></div><div><br></div><div>.</div><br>
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