TY - JOUR
T1 - Quantitative atomic 3-D imaging of single/double sheet graphene structure
AU - Jinschek, Joerg R.
AU - Yucelen, Emrah
AU - Calderon, Hector A.
AU - Freitag, Bert
N1 - Funding Information:
J.R. Jinschek thanks Prof. R. Dunin-Borkowski (Cen, DTU, Lyngby, Denmark) and Dr. C. Kisielowski (NCEM & Helios, LBNL, Berkeley, CA) for discussions. H.A. Calderon acknowledges support from DAAD (Germany, Visiting Scholar Fellowship) and from IPN (Mexico, Research Grant). The sample is a courtesy of N. Alem and A. Zettl (Dept. of Physics, UC Berkeley, Berkeley, CA).
PY - 2011/2
Y1 - 2011/2
N2 - Graphene sheets can be regarded as base structure of many carbon nanostructures, and atomic arrangements and variations in the atomic structure have a drastic impact on their unique properties. Using a single/double layer graphene model structure, we present a strategy to "see" single carbon atoms in 3-D. In high-resolution transmission electron microscopy, exit-wave images are essential to obtain and to understand 3-D atomic structure. Using electrons at 80 kV not only minimizes the knock-on damage, but also improves the detection sensitivity due to the higher scattering power of carbon at lower acceleration voltage of the electron. Using experiments and image simulations, positions of individual carbon atoms in a single/double layer structure in graphene have been identified.
AB - Graphene sheets can be regarded as base structure of many carbon nanostructures, and atomic arrangements and variations in the atomic structure have a drastic impact on their unique properties. Using a single/double layer graphene model structure, we present a strategy to "see" single carbon atoms in 3-D. In high-resolution transmission electron microscopy, exit-wave images are essential to obtain and to understand 3-D atomic structure. Using electrons at 80 kV not only minimizes the knock-on damage, but also improves the detection sensitivity due to the higher scattering power of carbon at lower acceleration voltage of the electron. Using experiments and image simulations, positions of individual carbon atoms in a single/double layer structure in graphene have been identified.
UR - http://www.scopus.com/inward/record.url?scp=78650024863&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2010.09.058
DO - 10.1016/j.carbon.2010.09.058
M3 - Artículo
SN - 0008-6223
VL - 49
SP - 556
EP - 562
JO - Carbon
JF - Carbon
IS - 2
ER -