Clusters: A bridge between disciplines

Castleman, A. W.; Jena, P.

doi:10.1073/pnas.0601783103

Cited by 81 publications

(63 citation statements)

References 28 publications

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“…3,4 It has been suggested that the clusters could be an intermediate form of matter between single atoms and solid material. [5][6][7] By adding a single atom into the clusters, the properties and structures may be changed. With special stability and properties, certain unique clusters can be considered as the super atoms which serve as the building blocks for a class of materials.…”

Section: Introductionmentioning

confidence: 99%

“…With special stability and properties, certain unique clusters can be considered as the super atoms which serve as the building blocks for a class of materials. 6 Accurate identification of inter-residue contacts is a crucial step in understanding protein structure stability. The residue contacts observed in crystal structures of globular proteins are generally considered as the actual intrinsic inter-residue interactions.…”

Section: Introductionmentioning

confidence: 99%

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Understanding on the residue contact network using the log‐normal cluster model and the multilevel wheel diagram

Sun

2010

Biopolymers

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Residue clusters play essential role in stabilizing protein structures in the form of complex networks. We show that the cluster sizes in a native protein follow the log-normal distribution for a dataset consisting of 424 proteins. To our knowledge, this is the first time of such fitting for the native structures. Based on log-normal model, the asymptotically increasing mean cluster sizes produce a critical protein chain length of about 200 amino acids, beyond which length most globular proteins have nearly the same mean cluster sizes. This suggests that the larger proteins use a different packing mechanism than the smaller proteins. We confirmed the scale-free property of the residue contact network for most of the protein structures in the dataset, although the violations were observed for the tightly packed proteins. Residue cluster network wheel (RCNW) is proposed to visualize the relationship between the multiple properties of the residue network such as the cluster size, the residue types and contacts, and the flexibility of the residue. We noticed that the residues with large cluster size have smaller Calpha displacement measured using the normal mode analysis.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Understanding on the residue contact network using the log‐normal cluster model and the multilevel wheel diagram

Sun

2010

Biopolymers

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“…It was found that the absorption band (312 nm) of NAPO displayed red-shifted and hyperchromic effects in the present of copper ion. The red-shifted and hyperchromic effects got much more obvious with the increasing Cu 2+ concentration, which were possibly related to the formation of aggregation species or clusters [26][27][28][29]. 3 shows that the LS signals of NAPO are rather weak over the wavelength range of 260-700 nm.…”

mentioning

confidence: 96%

Selectively light scattering spectrometric detection of copper (II) based on a new synthesized oxamide ligand

Long

Huang

et al. 2008

Analytica Chimica Acta

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“…For example, clusters of non-magnetic solids are found to be magnetic (Reddy, Khanna et al, 1993, Cox et al, 1994, while clusters of noble metals like gold are found to be strong catalysts (Heiz et al, 1999, Wallace et al, 2003and Zhang et al, 2007. Further, the properties change with size and composition allowing tailoring of the properties as every atom counts in the cluster regime (Castleman, and Jena, 2006). Secondly, it has been found that using stable clusters, it may be possible to form cluster assembled materials where clusters serve as the building blocks (Khanna and Jena, 1992).…”

Section: Introductionmentioning

confidence: 99%

Production of equal sized atomic clusters by a hot wire

Peineke

Attoui

Robles

et al. 2009

Journal of Aerosol Science

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A resistively heated metal wire is shown to be a source of charged atomic clusters consisting of only a few atoms. They are size classified with a differential mobility analyzer, and their relative abundance is determined as a function of size. Ag n K + clusters are obtained from wires containing silver with traces of potassium to provide the electric charge. First principles calculations reveal that the abundance observed can be fully explained by the energetic and chemical stability of the neutral cluster and K + attachment energy. K + attachment is a noninvasive way of charging, as the observed Ag n K + cluster properties are similar with respect to the pure Ag n clusters in terms of energetic and electronic stability and cluster structure. The equally-sized clusters are basically available for reactivity, coalescence and deposition studies, and the method is extendable to other materials.

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Clusters: A bridge between disciplines

Cited by 81 publications

References 28 publications

Understanding on the residue contact network using the log‐normal cluster model and the multilevel wheel diagram

Understanding on the residue contact network using the log‐normal cluster model and the multilevel wheel diagram

Selectively light scattering spectrometric detection of copper (II) based on a new synthesized oxamide ligand

Production of equal sized atomic clusters by a hot wire

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