scholarly journals Diffractive arrays of gold nanoparticles near an interface: Critical role of the substrate

2010 ◽  
Vol 82 (15) ◽  
Author(s):  
Baptiste Auguié ◽  
Xesús M. Bendaña ◽  
William L. Barnes ◽  
F. Javier García de Abajo
2017 ◽  
Vol 8 ◽  
pp. 1-11 ◽  
Author(s):  
Roberta D'Agata ◽  
Pasquale Palladino ◽  
Giuseppe Spoto

Gold nanoparticles (AuNPs) exhibit unique properties that can be modulated through a tailored surface functionalization, enabling their targeted use in biochemical sensing and medical diagnostics. In particular, streptavidin-modified AuNPs are increasingly used for biosensing purposes. We report here a study of AuNPs surface-functionalized with streptavidin-biotinylated oligonucleotide, focussing on the role played by the oligonucleotide probes in the stabilization/destabilization of the functionalized nanoparticle dispersion. The behaviour of the modified AuNP dispersion as a consequence of the competitive displacement of the biotinylated oligonucleotide has been investigated and the critical role of displaced oligonucletides in triggering the quasi one-dimensional aggregation of nanoparticles is demonstrated for the first time. The thorough understanding of the fundamental properties of bioconjugated AuNPs is of great importance for the design of highly sensitive and reliable functionalized AuNP-based assays.


2015 ◽  
Vol 17 (7) ◽  
pp. 4864-4869 ◽  
Author(s):  
Alberto Naldoni ◽  
Filippo Fabbri ◽  
Marco Altomare ◽  
Marcello Marelli ◽  
Rinaldo Psaro ◽  
...  

Cathodoluminescence spectroscopy allows the elucidation of energy transfer mechanisms between gold nanoparticles and semiconductors occurring during hydrogen production by photo-steam reforming.


2008 ◽  
Vol 15 (2) ◽  
pp. 50-59 ◽  
Author(s):  
Amy Philofsky

AbstractRecent prevalence estimates for autism have been alarming as a function of the notable increase. Speech-language pathologists play a critical role in screening, assessment and intervention for children with autism. This article reviews signs that may be indicative of autism at different stages of language development, and discusses the importance of several psychometric properties—sensitivity and specificity—in utilizing screening measures for children with autism. Critical components of assessment for children with autism are reviewed. This article concludes with examples of intervention targets for children with ASD at various levels of language development.


1998 ◽  
Vol 5 (1) ◽  
pp. 115A-115A
Author(s):  
K CHWALISZ ◽  
E WINTERHAGER ◽  
T THIENEL ◽  
R GARFIELD
Keyword(s):  

2018 ◽  
Vol 20 (3) ◽  
pp. 99-110
Author(s):  
Na Zhang ◽  
Jingjing Li ◽  
Xing Bu ◽  
Zhenxing Gong ◽  
Gilal Faheem Gul

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