Helio Chacham
Helio Chacham
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Third and fourth optical transitions in semiconducting carbon nanotubes
PT Araujo, SK Doorn, S Kilina, S Tretiak, E Einarsson, S Maruyama, ...
Physical Review Letters 98 (6), 067401, 2007
Stability of native defects in hexagonal and cubic boron nitride
W Orellana, H Chacham
Physical Review B 63 (12), 125205, 2001
Electronic structure and energetics of B x C y N z layered structures
MSC Mazzoni, RW Nunes, S Azevedo, H Chacham
Physical Review B 73 (7), 073108, 2006
Disorder and segregation in B− C− N graphene-type layers and nanotubes: tuning the band gap
J da Rocha Martins, H Chacham
Acs Nano 5 (1), 385-393, 2011
Stability, geometry, and electronic structure of the boron nitride fullerene
SS Alexandre, MSC Mazzoni, H Chacham
Applied physics letters 75 (1), 61-63, 1999
Room‐temperature compression‐induced diamondization of few‐layer graphene
APM Barboza, MHD Guimaraes, DVP Massote, LC Campos, ...
Advanced Materials 23 (27), 3014-3017, 2011
Instabilities in diamond under high shear stress
H Chacham, L Kleinman
Physical review letters 85 (23), 4904, 2000
Bandgap closure of a flattened semiconductor carbon nanotube: a first-principles study
MSC Mazzoni, H Chacham
Applied Physics Letters 76 (12), 1561-1563, 2000
Small polarons in dry DNA
SS Alexandre, E Artacho, JM Soler, H Chacham
Physical review letters 91 (10), 108105, 2003
Metallization of solid hydrogen at megabar pressures: a first-principles quasiparticle study
H Chacham, SG Louie
Physical review letters 66 (1), 64, 1991
Electromechanical effects in carbon nanotubes: Ab initio and analytical tight-binding calculations
M Verissimo-Alves, B Koiller, H Chacham, RB Capaz
Physical Review B 67 (16), 161401, 2003
Energetics of the oxidation and opening of a carbon nanotube
H Chacham, P Ordejon, D Sanchez-Portal, JM Soler, E Artacho
Physical Review B 60 (4), R2208, 1999
Structure and energetics of boron nitride fullerenes: The role of stoichiometry
SS Alexandre, H Chacham, RW Nunes
Physical Review B 63 (4), 045402, 2001
Structures of Si and Ge nanowires in the subnanometer range
R Kagimura, RW Nunes, H Chacham
Physical review letters 95 (11), 115502, 2005
Enhancing the response of NH3 graphene-sensors by using devices with different graphene-substrate distances
AR Cadore, E Mania, AB Alencar, NP Rezende, S De Oliveira, ...
Sensors and Actuators B: Chemical 266, 438-446, 2018
Deformation induced semiconductor-metal transition in single wall carbon nanotubes probed by electric force microscopy
APM Barboza, AP Gomes, BS Archanjo, PT Araujo, A Jorio, AS Ferlauto, ...
Physical review letters 100 (25), 256804, 2008
Polarons in carbon nanotubes
M Verissimo-Alves, RB Capaz, B Koiller, E Artacho, H Chacham
Physical review letters 86 (15), 3372, 2001
Graphene Moiré patterns observed by umklapp double-resonance Raman scattering
A Righi, SD Costa, H Chacham, C Fantini, P Venezuela, C Magnuson, ...
Physical Review B 84 (24), 241409, 2011
Dynamic Negative Compressibility of Few-Layer Graphene, h-BN, and MoS2
APM Barboza, H Chacham, CK Oliveira, TFD Fernandes, EHM Ferreira, ...
Nano letters 12 (5), 2313-2317, 2012
Stability of antiphase line defects in nanometer-sized boron nitride cones
S Azevedo, MSC Mazzoni, RW Nunes, H Chacham
Physical Review B 70 (20), 205412, 2004
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