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2 article(s) from Velazquez-Salazar, J Jesus

Ultrastructural changes in methicillin-resistant Staphylococcus aureus induced by positively charged silver nanoparticles

Dulce G. Romero-Urbina,
Humberto H. Lara,
J. Jesús Velázquez-Salazar,
M. Josefina Arellano-Jiménez,
Eduardo Larios,
Anand Srinivasan,
Jose L. Lopez-Ribot and
Miguel José Yacamán

Beilstein J. Nanotechnol. 2015, 6, 2396–2405, doi:10.3762/bjnano.6.246

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Figure 1: (a) TEM micrograph of AgNPs. (b) Log–normal size distribution graph shows the average AgNP size of ...

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Figure 2: Zeta potential of AgNP solution (4,600 ppm) over a time of 120 h.

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Figure 3: (a) HAADF-STEM image of an untreated MRSA cell. (b) High magnification image of a MRSA cell wall co...

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Figure 4: MSSA cell STEM image. (a) MSSA cell showing AgNP attachment on the cell wall. (b) High magnificatio...

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Figure 5: STEM micrograph of cell envelope of MSSA treated with AgNPs. (1) Cytoplasm, (2) cytoplasmic membran...

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Figure 6: MSSA STEM micrographs. (a,b) (1) WTAs and CWGs (≈3 nm). (2) Interactions between AgNPs and a cell w...

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Figure 7: HAADF-STEM micrographs of MRSA cells. (a) MRSA cells surrounded by AgNPs, with AgNPs smaller than 1...

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Figure 8: MRSA STEM images. (a) (1) WTAs and CWGs (≈3 nm). (b) (2) AgNPs interacting with CWGs. (3) Membrane ...

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Figure 9: SEM images show cell size and morphology along with AgNPs interacting to the cell surface for (a) a...

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Figure 10: (a) AgNPs inside of a MRSA cell. EDS analysis was performed on one particle, label 1. (b) The EDS s...

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Figure 11: AgNP size distributions for particles (a) inside and (b) outside of S. aureus cells after treatment...

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Full Research Paper

Published 15 Dec 2015

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Synthesis, characterization, and growth simulations of Cu–Pt bimetallic nanoclusters

Subarna Khanal,
Ana Spitale,
Nabraj Bhattarai,
Daniel Bahena,
J. Jesus Velazquez-Salazar,
Sergio Mejía-Rosales,
Marcelo M. Mariscal and
Miguel José-Yacaman

Beilstein J. Nanotechnol. 2014, 5, 1371–1379, doi:10.3762/bjnano.5.150

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Figure 1: (a) STEM image of Cu–Pt bimetallic nanoparticles. The inset in (a) shows the HAADF-STEM image, and ...

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Figure 2: (a) HAADF-STEM image of Cu–Pt bimetallic nanoparticles, (b) Cu and Pt elemental line profiles along...

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Figure 3: High resolution HAADF-STEM image of (a) Cu–Pt bimetallic nanoparticle; the inset represents the fas...

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Figure 4: (a) C_s-corrected STEM-HAADF image of a bimetallic Cu–Pt nanoparticle oriented along the [011] zone ...

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Figure 5: Snapshots taken during time evolution (20 ns) of Pt (cyan) deposition on the Cu NPs (orange) at T =...

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Figure 6: STEM simulated images of the final configurations shown in Figure 5. In (a–c) TO₂₀₁ seed and (e–h) TO₅₈₆ se...

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Figure 7: Cu and Pt elemental line profiles across the nanoalloy structure obtained after 20 ns of GCLD simul...

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Figure 8: Calculation of exchange energy (E_exc) for Pt atom diffusion in different sub-surface layers inside ...

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Full Research Paper

Published 27 Aug 2014

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