ultra high emissivity coatings from uv to fir performance black coatings from uv to far infra-red...
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www.surreynanosystems.com
U L T R A H I G H E M I S S I V I T Y C O A T I N G S F R O M U V t o F I R
®
Extreme Performance Black Coatings from UV to Far Infra-Red
Carbon nanotube coatings are the blackest known to man, exhibiting
the lowest reflectance across a spectrum extending from the UV
to the far infra-red. These coatings have typically been applied
to fragile materials from which they are easily removed, making
them unsuited to space and defence applications, where they are
routinely exposed to extreme operating stress.
Vantablack® is a new nanotube-based coating developed by SNS to
overcome these limitations, delivering superior shock and vibration
resistance, virtually undetectable outgassing, excellent adhesion to
light-weight alloys and excellent thermal stability.
Patented Low Temperature Nanotube Growth Process
Whilst the application of Carbon Nanotubes (CNTs) to black coatings
is known (having been demonstrated by NASA amongst others),
Surrey NanoSystems’ patented process is the first to enable their
application to temperature-sensitive substrates. Aluminium foil,
fragile pyro-electric detector crystals and sensitive MEMS-type
structures have all been demonstrated to be amenable to the low-
temperature growth technique, delivering exceptional performance.
Space Qualification Testing
Vantablack has been shown to retain its optical properties following
space qualification testing to ESA standards. Qualification testing
confirms no particle fall-out when the Vantablack coating is
subjected to thermal cycling, or extreme mechanical shock and
vibration. It is chemically inert, exhibiting no mass loss at elevated
temperatures and no outgassing. This environmental robustness
avoids the contamination or foreign object debris issues associated
with traditional black coatings.
Each nanotube is only a few nanometers in
diameter and is formed from multiple walls
consisting of a single layer of carbon atoms
Vantablack coating atx5000 magnification
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0.4
0
0.8
1.2
490 620 745
0
2
4
6
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3 4 8 106 25
Martin Enhanced Black Leading Competitor
Vantablack
Reflectance (%)
Wavelength (microns)
Wavelength (nanometres)
Leading Competitor
Reflectance (%)
Vantablack
Reflectance - Visible spectrum
Reflectance - Infrared spectrumVantablack® data courtesy of National Physical Laboratory, UK
Carbon Nanotube Applications
The range of applications for Carbon Nanotubes in their various forms is vast. The high integrity
highly aligned array of the type produced by the SNS process are particularly suited to use:
• As a coating in black body calibration sources
• As a coating for stray light reduction
• As an absorber layer in CMOS and MEMS-type optical sensors
• To enhance field emission properties of electrodes
• In thermal management applications
Not All Carbon Nanotube Coatings Are The Same
Previous attempts to use carbon Nanotubes to produce light absorbent coatings have involved
loading various paint solutions and solvents with ‘loose’ Nanotubes. This not only produces a
lower emissivity coating, but results in a material susceptible to particulate loss and outgassing.
It is also difficult to reproduce the fine lithographic patterning that is possible with Vantablack.
Surrey NanoSystemsUnit 24 Euro Business ParkNew RoadNewhaven BN9 0DQ , UK
T: +44 (0) 1273 515899E: [email protected]: www.surreynanosystems.com
About Surrey NanoSystems
Surrey NanoSystems is a classic success story that combines
the best of British ingenuity and materials science for use in
the development, growth and commercialisation of
strategically important nanomaterials.
The company was founded in 2006 as a spinout from the
University of Surrey, and is backed by some of the UK’s most
successful Venture Capital providers including the
IP Group, Octopus, NewWave Ventures and Parkwalk
Advisors.
Tasked with developing and commercialising carbon based
nanomaterials (Carbon Nanotubes and Graphene), the
company has made a huge leap forward with its Vantablack
material.
© 2014 Surrey N
anoSystems Ltd
U L T R A H I G H E M I S S I V I T Y C O A T I N G S F R O M U V t o F I R
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