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Abstract
Grain boundaries, the characteristic topological defects of chemical vapor deposition grown graphene samples, are expected to substantially alter the electronic properties of the unperturbed graphene lattice. However, there is very little experimental insight into the underlying mechanisms. Here, we systematically map the electronic properties of individual graphene grain boundaries by scanning tunneling microscopy and spatially resolved tunneling spectroscopy measurements. The tunneling spectroscopy data reveal that the conductivity inside the boundaries is markedly suppressed for both electron and hole-type charge carriers. Furthermore, ...
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J. Optoelectron. Adv. M., Vol. 7, No. 2. (2005), pp. 631-636
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posted to no-tag
by zrbyte
on 2011-07-19 13:29:52
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J. Optoelectron. Adv. M., Vol. 9, No. 3. (2007), pp. 617-620
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posted to no-tag
by zrbyte
on 2011-07-19 13:29:52
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J. Optoelectron. Adv. M., Vol. 9, No. 3. (2007), pp. 605-609
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J. Optoelectron. Adv. M., Vol. 9, No. 5. (2007), pp. 1525-1529
posted to carbon cvd hrtem nanotubes pyridine tem
by zrbyte
on 2011-07-19 13:29:52
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posted to no-tag
by zrbyte
on 2011-07-19 13:29:52
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posted to no-tag
by zrbyte
on 2011-07-19 13:29:52
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posted to no-tag
by zrbyte
on 2011-07-19 13:29:52
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J. Optoelectron. Adv. M., Vol. 10, No. 9. (2008), pp. 2307-2310
by Z. Sárközi, K. Kertész, A. A. Koós, et al.Z. Osváth, L. Tapasztó, Z. E. Horváth, P. Nemes-Incze, I. Z. Jenei, Z. Vértesy, N. S. Daróczi, A. Darabont, O. Pana, L. P. Biró
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posted to no-tag
by zrbyte
on 2011-07-19 13:29:52
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posted to no-tag
by zrbyte
on 2011-07-19 13:29:52
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posted to no-tag
by zrbyte
on 2011-07-19 13:29:51
Abstract
Due to its exciting physical properties and sheet-like geometry graphene is in the focus of attention both from the point of view of basic science and of potential applications. In order to fully exploit the advantage of the sheet-like geometry very high resolution, crystallographicaly controlled lithography has to be used. Graphene is a zero gap semiconductor, so that a field effect transistor (FET) will not have an “off” state unless a forbidden gap is created. Such a gap can be produced ...
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Abstract
Theory has predicted rich and very distinct physics for graphene devices with boundaries that follow either the armchair or the zigzag crystallographic directions. A prerequisite to disclose this physics in experiment is to be able to produce devices with boundaries of pure chirality. Exfoliated flakes frequently exhibit corners with an odd multiple of 30°, which raised expectations that their boundaries follow pure zigzag and armchair directions. The predicted Raman behavior at such crystallographic edges however failed to confirm pure edge chirality. ...
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Nanopages, Vol. 5 (October 2010), pp. 1-8
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posted to no-tag
by zrbyte
on 2011-07-19 13:29:51
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Thin Solid Films, Vol. 519 (February 2011), pp. 4078-81
posted to no-tag
by zrbyte
on 2011-07-19 13:29:51
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posted to no-tag
by zrbyte
on 2011-07-19 13:29:51
Abstract
Scanning tunneling microscopy gives us the opportunity to map the surface of functionalized carbon nanotubes in an energy resolved manner and with atomic precision. But this potential is largely untapped, mainly due to sample stability issues which inhibit reliable measure- ments. Here we present a simple and straightforward solution that makes away with this difficulty, by incorpor- ating the functionalized multiwalled carbon nanotubes into a few-layer graphene-nanotube composite. This enabled us to measure energy resolved tunneling conductance maps on the nanotubes, ...
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Appl. Phys. Lett., Vol. 99, No. 2. (2011), pp. 023104-023104
Note (first note only)
graphene grain boundary
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