00:00 Wide
- clean room in Nano Technology Laboratory
Medium
wide of researcher at microscope
Wide
of another laboratory
c.u.
specimen being placed under microscope
Wide;
researcher at microscope
Wide;
Prof. Wang demonstrating LEDs
c.u.
white light LED
c.u
blue LED with phosphor gel being placed in front to produce white
light
c.u.
hand putting specimen into scanning machine
Wide
of above
Researcher
in clean suit
Researcher
scanning specimen
c.u.
computer screen
Wide
of above
Wide
of laboratory
Guide Voice: At the University of Bath in the
South West of England, scientists are using the new state of the
art laboratory at the Nanotechnology research centre to develop new
lighting technology based on light emitting diodes.
Known as Solid State Lighting, researchers estimate that in the
next 20 years 90 per cent of the world's lighting will be provided
by this technology. Until recently LEDs, Light Emitting Diodes,
only produced red light. Recent research has allowed LEDs to emit
high-quality green and blue light as well, so that the full
spectrum can now be produced artificially.
Conventional incandescent lighting emits yellowish light but
light produced by combined LEDs can be tuned closer to natural
sunlight, in addition, LEDs last 20 times as long as ordinary light
bulbs and can accommodate readily into any shape or form for
lighting.
00:48 SOT: Professor Wang-Nang Wang, Department of
Physics, University of Bath - "Our research here
is looking at some novel designs on LEDs and trying to increase the
efficiency of the LEDs particularly lumens per watts of the LEDs
and also what we are trying to do is to combine different LEDs and
optical designs to create a kind of lighting to using a combination
of different coloured LEDs to create something very close to
natural light in lighting. Those are the two tasks we're working on
at Bath University".
01:23 Exterior,
Physics Department, University of Bristol
c.u.
H.H.Wills Physics Laboratory sign
Professor
Miles & researchers in Lab
c.u.
Atomic Force Microscope
Wide,
Prof. Miles and researcher
Biology
researcher entering isolation booth
c.u.
researcher's hand adjusting clamp holding a fly
c.u.
researchers face
Guide Voice: A few miles down the road, at the
University of Bristol, research in Nanotechnology is also being
undertaken, with a team in physics collaborating with biologists.
By understanding the way that insects hear sounds, this unusual
team is making major advances in Atomic-force microscopy, the
principal tool of Nanotechnology.
01:41 SOT: Professor Mervyn Miles, Director,
Interdisciplinary Research Centre for Nanotechnology, University of
Bristol - "Nano-science is the study of
structures and properties at the nano-metre scale. The scale is a
millionth of a millimetre. And at this scale the behaviour of
matter is different to that in the bulk form and the advantages
that this brings us and the new properties that this brings us will
be the future for nano-technology."
02:06 Wide
- researchers with Atomic Force Microscope
c.u.
specimen under AFM
Medium
shot of record on record player
c.u.
stylus on disc
c.u.
and pan AFM stylus on computer screen panning to AFM
Quick
time movie showing nano specimen
Guide Voice: The Atomic Force Microscope is
used to obtain images at the atomic scale. Likened to an old
fashioned record player, it uses a cantilever system that houses a
highly sensitive probe. Much like a stylus bumping around in the
groove of a record, the probe moves across the specimen, mapping
its contours at a molecular level by 'feeling' the bumps. The
result is a three-dimensional map of the specimen's surface.
O2:31 SOT: Prof. Miles - "So, what
we're trying to do is characterise, at this nano-metre scale, both
the structure and its properties in order to understand the science
that's going on behind it. When we understand what structures we
have, we're also able to modify them in some way, to create
structures of practical use. To be able to write at this scale
means that we can perhaps create circuits beyond the level that can
be achieved at the moment by conventional lithography silicon
techniques".
03:01 AVI
file - DNA specimen from AFM
Researcher
at computer
c.u.
fly's head shown on computer screen
Wide
of researcher at desk, Prof. Robert enters Lab
Prof.
Robert and researcher
Guide Voice: When examining delicate material,
such as DNA, there is a risk that the probe might damage it.
By collaborating with colleagues in the Biology Department,
Professor Miles' research team have used the Atomic Force
Microscope to tap into the ways in which insects use their hearing
systems to detect very faint vibrations. Understanding this is
helping them devise more sensitive instruments for dealing with
delicate biological materials.
03:26 SOT: Daniel Robert, Professor of Nano Bioscience,
University of Bristol - "We actually borrow their
tools to study our insects and in return, understanding more about
how biological systems have evolved to detect these tiny
vibrations, inspires how technologists can actually devise better
instruments to detect these vibrations using, possibly, the
molecular constructions that nature has come about with, to
actually emulate these structures and create better
tools".
03:53 Pan
across exterior of Bristol University Nano-Science Centre mixes to
interior (computer simulation)
Guide Voice: The University of Bristol's new
Nano-science centre, currently under construction and seen here in
computer simulation, will bring together a range of scientific
disciplines. Professor Miles sees such interdisciplinary
collaboration as being essential to pushing forward the barriers of
this exciting new science.
04:11 SOT: Prof. Miles - "The
excitement that we've had by working with biologists can be
reproduced by bringing together chemists, engineers,
mathematicians, into the new centre and we will create new ideas,
new directions and the whole process will occur at a much more
rapid pace. So I think by applying our techniques across a wide
range of materials and by understanding better, by working with
mathematicians to understand what's happening we should create new
directions and it's a very exciting time in terms of nanoscale
science. We've don't know which direction it's going to go, we've
just started to open a door and we're looking now at bringing new
techniques to apply in all sorts of fields".
04:52 End
