Results 101 to 110 of about 77,481 (274)

Atomic Force Microscopy Application in Biological Research: A Review Study

Iranian Journal of Medical Sciences, 2013
Atomic force microscopy (AFM) is a three-dimensional topographic technique with a high atomic resolution to measure surface roughness. AFM is a kind of scanning probe microscope, and its near-field technique is based on the interaction between a sharp ...
Surena Vahabi, Bahareh Nazemi Salman, Anahita Javanmard   +2 more
doaj  

Scanning tunneling microscopy and spectroscopy studies of graphite edges

, 2005
We studied experimentally and theoretically the electronic local density of states (LDOS) near single step edges at the surface of exfoliated graphite. In scanning tunneling microscopy measurements, we observed the $(\sqrt{3} \times \sqrt{3}) R 30^{\circ}
Birgeneau, Elstner, Esquinazi, Fujita, Fujita, Giunta, H. Kambara, Hiroshi Fukuyama, K. Tagami, Kaneko, Klusek, Klusek, M. Tsukada, Matsui, Matsui, Miyamoto, Nakada, Niimi, T. Matsui, Tai, Y. Niimi   +20 more
core   +1 more source

Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives

Advanced Materials, EarlyView.
Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi, Mario Palacios‐Corella, Arjan Mol, Salvador Pané, Josep Puigmartí‐Luis   +4 more
wiley   +1 more source

Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet

Advanced Materials, EarlyView.
Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens, Francisco Romero‐Lara, Trisha Sai, Kalyan Biswas, Manuel Vilas‐Varela, Thomas Frederiksen, Diego Peña, Fabian Schulz, Jose Ignacio Pascual   +8 more
wiley   +1 more source

Scanning Tunneling Microscopy and Spectroscopy of Graphene on Insulating Substrates

, 2011
Graphene is a truly two-dimensional material with exceptional electronic, mechanical, and optical properties. As such, it consists of surface only and can be probed by the well developed surface-science techniques as, e.g., scanning tunneling microscopy.
Ando, Ando, Avsar, Berger, Bolotin, Bolotin, Bonaccorso, Brar, Brihuega, Castro Neto, Chen, Cullen, Dean, Decker, Deshpande, Dombrowski, Du, Eichler, Fasolino, Feenstra, Garaj, Geim, Geringer, Geringer, Gibertini, Girit, Hashimoto, Inui, Ishigami, Jiao, Joynt, Jung, Katsnelson, Kim, Klitzing, Koskinen, Kugler, Lauffer, Lee, Li, Li, Lin, Lin, Liu, Locatelli, Luican, Mallet, Mashoff, Mermin, Meyer, Meyer, Meyer, Miller, Miller, Min, Mohr, Molitor, Morgenstern, Morgenstern, Morgenstern, Nakada, Novoselov, Novoselov, Novoselov, Ohta, Pan, Peierls, Pereira, Prange, Rutter, Rutter, Sadowski, Schneider, Seyller, Son, Song, Stampfer, Stolyarova, Suenaga, Tan, Tao, Tersoff, Tikhonenko, Tombros, Tsui, Tzalenchuk, Varchon, Varchon, Waldmann, Wallace, Wassmann, Wiebe, Wu, Xia, Xue, Zhang, Zhang, Zhang, Zhou   +98 more
core   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Time-resolved force microscopy using the delay-time modulation method

Applied Physics Express
We developed a time-resolved force microscopy technique by integrating atomic force microscopy using a tuning-fork-type cantilever with the delay time modulation method for optical pump-probe light.
Hiroyuki Mogi, Rin Wakabayashi, Shoji Yoshida, Yusuke Arashida, Atsushi Taninaka, Katsuya Iwaya, Takeshi Miura, Osamu Takeuchi, Hidemi Shigekawa   +8 more
doaj   +1 more source

Spatial distribution of local tunneling conductivity due to interference and Coulomb interaction effects for deep and shallow impurities on semiconductor surfaces

, 2010
Spatial distribution of local tunneling conductivity was investigated for deep and shallow impurities on semiconductor surfaces. Non-equilibrium Coulomb interaction and interference effects were taken into account and analyzed theoretically with the help
Arseev, Arseev, Dombrowski, Fano, Gores, Hofstetter, Inglesfield, Keldysh, Madhavan, Mahieu, Mantsevich, Maslova, Maslova, N.S. Maslova, Sullivan, V.N. Mantsevich   +15 more
core   +1 more source

Resolving the Structural Duality of Graphene Grain Boundaries

Advanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo, Emiliano Ventura‐Macías, Mariano D. Jiménez‐Sánchez, Nicoleta Nicoara, Pierre Mallet, Jean‐Yves Veuillen, Vincent T. Renard, Antonio J. Martínez‐Galera, Pablo Pou, Julio Gómez‐Herrero, Rubén Pérez, Iván Brihuega   +11 more
wiley   +1 more source

Adsorption, Single‐Molecule Manipulation, and Self‐Assembly of Borazine on Ag(111)

Advanced Materials Interfaces
The interaction of borazine with metal supports and the concomitant surface chemistry play important roles in the synthesis of hexagonal boron nitride and the assembly of BN‐doped carbon nanostructures, thus making adsorbed borazine an intriguing model ...
Tobias Weiss, Aleksandr Baklanov, Georg S. Michelitsch, Karsten Reuter, Martin Schwarz, Manuela Garnica, Willi Auwärter   +6 more
doaj   +1 more source