utorak, 15. svibnja 2012.

NANOTEHNOLOGY


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CREATED:20120515T130232Z
DESCRIPTION:In Quest of a Fast\, Low-Voltage Digital Switch\n\nThomas N. Th
 eis\nProgram Manager\, New Devices and Architectures for Computing \nIBM T
 .J. Watson Research Center\n    \n   Thursday\, May 31\, 2012 10:30AM - 11
 :30AM\, Building 215\, Room C103-106\n Because the performance of today’
 s computational systems is severely constrained by economic limits on allo
 wable power dissipation\, reduced dissipation in device switching may be t
 he most critical attribute for the success of any new switch which can rep
 lace the field effect transistor for digital logic. There are two broad an
 d very distinct physical approaches to reduced power dissipation. The firs
 t approach is to store less energy in the device to distinguish digital lo
 gic states. The second approach is to conserve the stored energy from swit
 ching event to switching event by implementing near-adiabatic switching pr
 otocols and energy-conserving logic circuits. In this talk\, I focus on th
 e first approach\, and further limit the discussion to three-terminal\, vo
 ltage-controlled current switches – devices which should be broadly comp
 atible with silicon interconnection technology and with well-established F
 ET circuit families. I discuss several classes of proposed low-voltage dev
 ices\, and identify the underlying operating principles which enable those
  devices to overcome the voltage-scaling limit of the conventional field e
 ffect transistor. I argue that the operating principles exemplified by the
 se devices are quite general\, and can be applied in ways that have not ye
 t been explored. It is therefore likely that we are still in the early sta
 ges of the quest for a fast\, low-voltage digital switch.\n       \n     S
 ponsor: Fred Sharifi\, 301-975-4633\, fred.sharifi@nist.gov\n\n\n
DTEND;TZID="Eastern Standard Time":20120531T113000
DTSTAMP:20120515T130232Z
DTSTART;TZID="Eastern Standard Time":20120531T103000
LAST-MODIFIED:20120515T130232Z
LOCATION:Bldg.215/Rm.C103-106
PRIORITY:5
SEQUENCE:0
SUMMARY;LANGUAGE=en-us:CNST Nanotechnology Seminar Series - Thomas N. Theis
  - In Quest of a Fast\, Low-Voltage Digital Switch
TRANSP:OPAQUE
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 ></B></SPAN><SPAN LANG="en-us"><B><I></I></B></SPAN><B><I><SPAN LANG="en">
 <FONT COLOR="#000000" FACE="Times New Roman">In Quest of a Fast\, Low-Volt
 age Digital Switch</FONT></SPAN></I></B><SPAN LANG="en-us"><I></I></SPAN><
 SPAN LANG="en-us"><I></I></SPAN><SPAN LANG="en-us"><I></I></SPAN><I><SPAN 
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 <I></I></SPAN><SPAN LANG="en-us"><I></I></SPAN><SPAN LANG="en-us"><I></I><
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 <SPAN LANG="en-us"><B><I></I></B></SPAN><B><I><SPAN LANG="en"><FONT COLOR=
 "#000000" FACE="Times New Roman">Program Manager\, New Devices and Archite
 ctures for Computing</FONT></SPAN></I></B><SPAN LANG="en-us"><I></I></SPAN
 ><SPAN LANG="en-us"><I></I></SPAN><SPAN LANG="en-us"><I></I></SPAN><I><SPA
 N LANG="en"> </SPAN></I></P>\n\n<P DIR=LTR ALIGN=CENTER><SPAN LANG="en-us"
 ><B><I></I></B></SPAN><SPAN LANG="en-us"><B><I></I></B></SPAN><SPAN LANG="
 en-us"><B><I></I></B></SPAN><B><I><SPAN LANG="en"><FONT COLOR="#000000" FA
 CE="Times New Roman">IBM T.J. Watson Research Center</FONT></SPAN></I></B>
 <SPAN LANG="en-us"><I></I></SPAN><SPAN LANG="en-us"><I></I></SPAN><SPAN LA
 NG="en-us"><I></I></SPAN><I><SPAN LANG="en"></SPAN></I></P>\n<UL DIR=LTR><
 UL DIR=LTR><UL DIR=LTR>\n<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="
 en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en"><FONT COLOR="#0000
 00" FACE="Times New Roman"> </FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN
  LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en"></SPAN></P>
 \n\n<P DIR=LTR ALIGN=CENTER><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><
 /SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en"><FONT COLOR="#000000" FACE
 ="Times New Roman">Thursday\, May 31\, 2012 10:30AM - 11:30AM\, Building 2
 15\, Room C103-106</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-u
 s"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en"></SPAN></P>\n</UL></UL
 ></UL>\n<P DIR=LTR ALIGN=JUSTIFY><SPAN LANG="en-us"><B></B></SPAN><SPAN LA
 NG="en-us"><B></B></SPAN><SPAN LANG="en-us"><B></B></SPAN><B><SPAN LANG="e
 n"><FONT COLOR="#000000" FACE="Times New Roman"> </FONT></SPAN></B><SPAN 
 LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><S
 PAN LANG="en"><FONT COLOR="#000000" FACE="Times New Roman">Because the per
 formance of today&#8217\;s computational systems is severely constrained b
 y economic limits on allowable power dissipation\, reduced dissipation in 
 device switching may be the most critical attribute for the success of any
  new switch which can replace the field effect transistor for digital logi
 c. There are two broad and very distinct physical approaches to reduced po
 wer dissipation. The first approach is to store less energy in the device 
 to distinguish digital logic states. The second approach is to conserve th
 e stored energy from switching event to switching event by implementing ne
 ar-adiabatic switching protocols and energy-conserving logic circuits. In 
 this talk\, I focus on the first approach\, and further limit the discussi
 on to three-terminal\, voltage-controlled current switches &#8211\; device
 s which should be broadly compatible with silicon interconnection technolo
 gy and with well-established FET circuit families. I discuss several class
 es of proposed low-voltage devices\, and identify the underlying operating
  principles which enable those devices to overcome the voltage-scaling lim
 it of the conventional field effect transistor. I argue that the operating
  principles exemplified by these devices are quite general\, and can be ap
 plied in ways that have not yet been explored. It is therefore likely that
  we are still in the early stages of the quest for a fast\, low-voltage di
 gital switch.</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></
 SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en"></SPAN></P>\n\n<P DIR=LTR><
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 PAN><SPAN LANG="en-us"><FONT FACE="Times New Roman">Sponsor: Fred Sharifi\
 , 301-975-4633\, fred.sharifi@nist.gov</FONT></SPAN><SPAN LANG="en-us"></S
 PAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>\n</UL></UL></
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