((CHRISTIE)) STILL TO COME,
((CHRISTIE)) WELCOME BACK.
IT'S TIME FOR WHYS
IT'S TIME FOR WHYS GUYS
WEDNESDAY. TODAY WE'RE TALKING
ABOUT SCANNING TUNNELING
MICROSCOPES
MEANS TAKING PICTURES OF ATOMS
AND MOLECULES. HERE'S U OF I
PROFESSOR PAUL KWIAT WITH
MORE.
A SCANNING TUNNELING
MICROSCOPE (STM) IS AN
INSTRUMENT FOR IMAGING
SURFACES AT THE ATOMIC LEVEL.
ITS DEVELOPMENT IN 1981 EARNED
ITS INVENTORS, GERD BINNIG AND
HEINRICH ROHRER (AT IBM
ÜRICH), THE NOBEL PRIZE IN
PHYSICS IN 1986. FOR AN STM,
GOOD RESOLUTION IS CONSIDERED
TO BE 0.1 NM LATERAL
RESOLUTION AND 0.01 NM (10 PM)
DEPTH RESOLUTION. WITH THIS
RESOLUTION, INDIVIDUAL ATOMS
WITHIN MATERIALS ARE ROUTINELY
IMAGED AND MANIPULATED. THE
STM CAN BE USED NOT ONLY IN
ULTRA-HIGH VACUUM BUT ALSO IN
AIR, WATER, AND VARIOUS OTHER
LIQUID OR GAS AMBIENTS, AND AT
TEMPERATURES RANGING FROM NEAR
ZERO KELVIN TO OVER 1000 °C.
((MACLEOD)) JACK HAS YOUR
FORECAST NEXT. WE'LL BE RIGHT
IMAGING SURFACES AT THE ATOMIC
LEVEL. ITS DEVELOPMENT IN 1981
EARNED ITS INVENTORS, GERD
BINNIG AND HEINRICH ROHRER (AT
IBM ÜRICH), THE NOBEL PRIZE IN
PHYSICS IN 1986. FOR AN STM,
GOOD RESOLUTION IS CONSIDERED
TO BE 0.1 NM LATERAL RESOLUTION
AND 0.01 NM (10 PM) DEPTH
RESOLUTION. WITH THIS
RESOLUTION, INDIVIDUAL ATOMS
WITHIN MATERIALS ARE ROUTINELY
IMAGED AND MANIPULATED. THE
STM CAN BE USED NOT ONLY IN
ULTRA-HIGH VACUUM BUT ALSO IN
AIR, WATER, AND VARIOUS OTHER
LIQUID OR GAS AMBIENTS, AND AT
TEMPERATURES RANGING FROM NEAR
ZERO KELVIN TO OVER 1000 °C.
((MACLEOD)) JACK HAS YOUR
FORECAST NEXT. WE'LL BE RIGHT
BACK.
YOU'RE WATCHING THE MORNING
SHOW