High-resolution and large-area nanoparticle arrays using EUV interference lithography

Well-defined model systems are needed for better understanding of the relationship between optical, electronic, magnetic, and catalytic properties of nanoparticles and their structure. Chemical synthesis of metal nanoparticles results in large size and shape dispersion and lack of lateral order. In...

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Bibliographic Details
Published in:Nanoscale 2015-04, Vol.7 (16), p.7386-7393
Main Authors: Karim, Waiz, Tschupp, Simon Andreas, Oezaslan, Mehtap, Schmidt, Thomas J, Gobrecht, Jens, van Bokhoven, Jeroen A, Ekinci, Yasin
Format: Article
Language:English
Subjects:
Arrays
Density
Dispersions
Electronics
Lithography
Nanoparticles
Nanostructure
Ultraviolet
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Summary:Well-defined model systems are needed for better understanding of the relationship between optical, electronic, magnetic, and catalytic properties of nanoparticles and their structure. Chemical synthesis of metal nanoparticles results in large size and shape dispersion and lack of lateral order. In contrast, conventional top-down lithography techniques provide control over the lateral order and dimensions. However, they are either limited in resolution or have low throughput and therefore do not enable the large patterning area needed to obtain good signal-to-noise ratio in common analytical and characterization techniques. Extreme ultraviolet (EUV) lithography has the throughput and simplicity advantages of photolithography as well as high resolution due to its wavelength. Using EUV achromatic Talbot lithography, we have obtained 15 nm particle arrays with a periodicity of about 100 nm over an area of several square centimeters with high-throughput enabling the use of nanotechnology for fabrication of model systems to study large ensembles of well-defined identical nanoparticles with a density of 10(10) particles cm(-2).
ISSN:2040-3364
2040-3372
DOI:10.1039/c5nr00565e