NANOlab Center of Excellence literature database -- Query Results

“Morphological transformations and fusion of PbSe nanocrystals studied using atomistic simulations”. Schapotschnikow P, van Huis MA, Zandbergen HW, Vanmaekelbergh D, Vlugt TJH, Nano letters 10, 3966 (2010). http://doi.org/10.1021/nl101793b Abstract: Molecular dynamics simulations are performed on capped and uncapped PbSe nanocrystals, employing newly developed classical interaction potentials. Here, we show that two uncapped nanocrystals fuse efficiently via direct surface attachment, even if they are initially misaligned. In sharp contrast to the general belief, interparticle dipole interactions do not play a significant role in this oriented attachment process. Furthermore, it is shown that presumably polar, capped PbSe{111} facets are never fully Pb- or Se-terminated. Keywords: A1 Journal article; Electron microscopy for materials research (EMAT) Impact Factor: 12.712 Times cited: 59 DOI: 10.1021/nl101793b Additional Links: UA library record; WoS full record; WoS citing articles show.php?record=2205
“Measuring porosity at the nanoscale by quantitative electron tomography”. Biermans E, Molina L, Batenburg KJ, Bals S, Van Tendeloo G, Nano letters 10, 5014 (2010). http://doi.org/10.1021/nl103172r Abstract: Quantitative electron tomography is proposed to characterize porous materials at a nanoscale. To achieve reliable three-dimensional (3D) quantitative information, the influence of missing wedge artifacts and segmentation methods is investigated. We are presenting the Discrete Algebraic Reconstruction Algorithm as the most adequate tomography method to measure porosity at the nanoscale. It provides accurate 3D quantitative information, regardless the presence of a missing wedge. As an example, we applied our approach to nanovoids in La2Zr2O7 thin films. Keywords: A1 Journal article; Electron microscopy for materials research (EMAT); Vision lab Impact Factor: 12.712 Times cited: 79 DOI: 10.1021/nl103172r Additional Links: UA library record; WoS full record; WoS citing articles show.php?record=1967

Abstract: Molecular dynamics simulations are performed on capped and uncapped PbSe nanocrystals, employing newly developed classical interaction potentials. Here, we show that two uncapped nanocrystals fuse efficiently via direct surface attachment, even if they are initially misaligned. In sharp contrast to the general belief, interparticle dipole interactions do not play a significant role in this oriented attachment process. Furthermore, it is shown that presumably polar, capped PbSe{111} facets are never fully Pb- or Se-terminated.

Abstract: Quantitative electron tomography is proposed to characterize porous materials at a nanoscale. To achieve reliable three-dimensional (3D) quantitative information, the influence of missing wedge artifacts and segmentation methods is investigated. We are presenting the Discrete Algebraic Reconstruction Algorithm as the most adequate tomography method to measure porosity at the nanoscale. It provides accurate 3D quantitative information, regardless the presence of a missing wedge. As an example, we applied our approach to nanovoids in La2Zr2O7 thin films.

Keywords: A1 Journal article; Electron microscopy for materials research (EMAT); Vision lab

Impact Factor: 12.712

Times cited: 79

DOI: 10.1021/nl103172r

Additional Links: UA library record; WoS full record; WoS citing articles

show.php?record=1967