Results 11 to 20 of about 60,665 (288)

Chirality transfer from Graphene Quantum Dots [PDF]

Chemical Communications, 2016
Chiral graphene quantum dots were prepared by acidic exfoliation and oxidation of graphite, dialysis, and esterification with enantiomerically pure (R) or (S)‐2‐phenyl‐1‐propanol.
Herranz, M.A., Martín, Nazario, Rodríguez Pérez, L., Vázquez Nakagawa, M.   +3 more
core   +7 more sources

Quantum dots in graphene [PDF]

Physical Review Letters, 2007
We suggest a way of confining quasiparticles by an external potential in a small region of a graphene strip. Transversal electron motion plays a crucial role in this confinement.
C. W. J. Beenakker, K. B. Efetov, M. V. Berry, P. G. Silvestrov   +3 more
core   +3 more sources

Quantum dot behavior in graphene nanoconstrictions [PDF]

Nano Letters, 2009
Graphene nanoribbons display an imperfectly understood transport gap. We measure transport through nanoribbon devices of several lengths. In nanoribbons of length greater than or equal to 250 nm we observe transport through multiple quantum dots in ...
Amasha, Sami, Chou, Hung-Tao, Goldhaber-Gordon, David, Todd, Kathryn   +3 more
core   +3 more sources

Spin States in Graphene Quantum Dots [PDF]

Physical Review Letters, 2010
We investigate ground and excited state transport through small (d = 70 nm) graphene quantum dots. The successive spin filling of orbital states is detected by measuring the ground state energy as a function of a magnetic field.
C. Stampfer, J. Güttinger, K. Ensslin, T. Frey, T. Heinzel, T. Ihn   +5 more
core   +3 more sources

Charge Detection in Graphene Quantum Dots [PDF]

Applied Physics Letters, 2008
We report measurements on a graphene quantum dot with an integrated graphene charge detector. The quantum dot device consists of a graphene island (diameter approx.
Ensslin, K., Guettinger, J., Hellmueller, S., Ihn, T., Molitor, F., Stampfer, C.   +5 more
core   +2 more sources

Chiral Graphene Quantum Dots [PDF]

ACS Nano, 2016
Chiral nanostructures from metals and semiconductors attract wide interest as components for polarization-enabled optoelectronic devices. Similarly to other fields of nanotechnology, graphene-based materials can greatly enrich physical and chemical phenomena associated with optical and electronic properties of chiral nanostructures and facilitate their
Nozomu, Suzuki, Yichun, Wang, Paolo, Elvati, Zhi-Bei, Qu, Kyoungwon, Kim, Shuang, Jiang, Elizabeth, Baumeister, Jaewook, Lee, Bongjun, Yeom, Joong Hwan, Bahng, Jaebeom, Lee, Angela, Violi, Nicholas A, Kotov   +12 more
openaire   +2 more sources

Graphene based quantum dots [PDF]

Journal of Physics: Condensed Matter, 2010
17pages, 4figures ...
Zhang, H G, Hu, H, Pan, Y, Mao, J H, Gao, M, Guo, H M, Du, S X, Greber, T, Gao, H J   +8 more
openaire   +4 more sources

Electrochemical Method To Prepare Graphene Quantum Dots and Graphene Oxide Quantum Dots [PDF]

ACS Omega, 2017
In this study, we present the preparation of graphene quantum dots (GQDs) and graphene oxide quantum dots (GOQDs). GQDs/GOQDs are prepared by an easy electrochemical exfoliation method, in which two graphite rods are used as electrodes. The electrolyte used is a combination of citric acid and alkali hydroxide in water.
Satyaprakash Ahirwar, Sudhanshu Mallick, Dhirendra Bahadur   +2 more
doaj   +3 more sources

Interaction between Graphene Nanoribbon and an Array of QDs: Introducing Nano Grating

Photonics, 2022
In this work, the interaction between an array of QDs and Graphene nanoribbon is modeled using dipole–dipole interaction. Then, based on the presented model, we study the linear optical properties of the considered system and find that by changing the ...
Sahar Armaghani, Ali Rostami, Peyman Mirtaheri   +2 more
doaj   +1 more source

Large terahertz electric dipole of a single graphene quantum dot

Physical Review Research, 2022
Graphene has recently emerged as an important material for optoelectronic applications owing to its unique properties. Here, we show that graphene is also appealing for the development of THz quantum optics when used for quantum dots.
Simon Messelot, Elisa Riccardi, Sylvain Massabeau, Federico Valmorra, Michael Rosticher, Kenji Watanabe, Takashi Taniguchi, Jérôme Tignon, Thomas Boulier, Vincent Dauvois, Matthieu Delbecq, Sukhdeep Dhillon, Sébastien Balibar, Takis Kontos, Juliette Mangeney   +14 more
doaj   +1 more source