<html><body><div style="color:#000; background-color:#fff; font-family:Arabic Transparent, Arial;font-size:12pt"><div dir="ltr">Dear all</div><div dir="ltr"><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Arabic Transparent,Arial; background-color: transparent; font-style: normal;" dir="ltr">I am going to constructed a cell of (8 ,0 ) nanotubes with 48 carbon atom or 80 atom.</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Arabic Transparent,Arial; background-color: transparent; font-style: normal;" dir="ltr"><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Arabic Transparent,Arial; background-color: transparent; font-style: normal;" dir="ltr">but i dont know ,how much determine value of cell dm(1)? <br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Arabic Transparent,Arial; background-color: transparent; font-style: normal;" dir="ltr">cell dm(1)
=?</div></div></body></html>