TY - GEN
T1 - Towards graphene based ultrasensitive chemical detectors
T2 - 2013 15th International Conference on Electromagnetics in Advanced Applications, ICEAA 2013
AU - Krepel, D.
AU - Hod, O.
PY - 2013
Y1 - 2013
N2 - Chemical sensing is one of the most promising applications of graphene based nanostructures. Here, we present a study of the effects of lithium adsorption on the electronic properties of graphene derivatives and its ability to serve as a chemical linker for different organic molecules. Lithium adsorption is found to significantly decrease the bandgap of armchair graphene nanoribbons (AGNRs), turning them metallic for sufficiently large adatom densities. However, upon the successive adsorption of an aromatic organic compounds at the lithium anchoring sites, all nanoribbons develop a bandgap. Therefore, in order to assess the performance of these systems as chemical detectors, we study their transport properties using a recently developed divide and conquer (D&C) approach. This enables us to evaluate the sensitivity of these systems toward relatively low adsorbate densities and suggests the possible implementation of GNRs as building blocks for chemical sensing devices.
AB - Chemical sensing is one of the most promising applications of graphene based nanostructures. Here, we present a study of the effects of lithium adsorption on the electronic properties of graphene derivatives and its ability to serve as a chemical linker for different organic molecules. Lithium adsorption is found to significantly decrease the bandgap of armchair graphene nanoribbons (AGNRs), turning them metallic for sufficiently large adatom densities. However, upon the successive adsorption of an aromatic organic compounds at the lithium anchoring sites, all nanoribbons develop a bandgap. Therefore, in order to assess the performance of these systems as chemical detectors, we study their transport properties using a recently developed divide and conquer (D&C) approach. This enables us to evaluate the sensitivity of these systems toward relatively low adsorbate densities and suggests the possible implementation of GNRs as building blocks for chemical sensing devices.
UR - http://www.scopus.com/inward/record.url?scp=84888368103&partnerID=8YFLogxK
U2 - https://doi.org/10.1109/ICEAA.2013.6632277
DO - https://doi.org/10.1109/ICEAA.2013.6632277
M3 - منشور من مؤتمر
SN - 9781467357074
T3 - Proceedings of the 2013 International Conference on Electromagnetics in Advanced Applications, ICEAA 2013
SP - 452
EP - 455
BT - Proceedings of the 2013 International Conference on Electromagnetics in Advanced Applications, ICEAA 2013
Y2 - 9 September 2013 through 13 September 2013
ER -