Results 21 to 30 of about 1,408 (127)

Nanoaggregates of benzothiazole-based amidine-coupled chemosensors: a chemosensor for Ag+ and the resultant complex as a secondary sensor for Cl−

open access: yesRSC Advances, 2014
Nanoaggregates of benzothiazole-based amidines were prepared for study as sensors in aqueous medium. Sensor N2 was found to behave as a selective primary sensor for Ag+, and the subsequent complex N2·Ag+ acted as a secondary sensor for Cl− in aqueous medium through a cation displacement mechanism. The cation displacement mechanism was further supported
Tilak Raj   +3 more
openaire   +1 more source

Local anisotropy and giant enhancement of local electromagnetic fields in fractal aggregates of metal nanoparticles

open access: yes, 2005
We have shown within the quasistatic approximation that the giant fluctuations of local electromagnetic field in random fractal aggregates of silver nanospheres are strongly correlated with a local anisotropy factor S which is defined in this paper.
D. J. Bergman   +17 more
core   +1 more source

First-principles simulations of the initial phase of self-aggregation of a cyanine dye: structure and optical spectra [PDF]

open access: yes, 2014
Using first-principles simulations, we investigated the initial steps of the self-aggregation of the dye pseudoisocyanine (PIC) in water. First, we performed molecular dynamics (MD) simulations of the self-aggregation process, in which pile-of-coins ...
Haverkort, Frank   +2 more
core   +2 more sources

Photoelectrochemical CO2 reduction on CuO-Cu2O nanocomposites with noble metal co-catalysts enhances the production of C1 oxygenates and acetate

open access: yesNext Nanotechnology
Multi-junction copper oxide nanocomposite photocathodes formed by CuO nanowire arrays coated with Cu2O nanopyramids or stacked nanoprisms, i.e. CuO(NWA)|Cu2O(NPy), exhibit remarkable electrochemical stability toward reductive corrosion.
Tahereh Mokary Yazdely   +2 more
doaj   +1 more source

Influence of Graphene Oxide on Asphaltene Nanoaggregates [PDF]

open access: yes, 2021
Asphaltenes are a group of exotic hydrocarbons found in bitumen and other forms of heavy crude oil derivatives. These hydrocarbons, with elusive chemistry, give crude oil derivatives (CODs), such as bitumen, its characteristic properties.
Induchoodan, Govindan   +2 more
core   +1 more source

STM fluorescence of porphyrin enhanced by a strong plasmonic field and its nanoscale confinement in an STM cavity [PDF]

open access: yes, 2009
We have investigated scanning tunneling microscope-induced luminescence STML from porphyrin molecules by varying the tip PtIr, Ag, and Au/substrate Pt, Ag, Au, and indium tin oxide combinations. Strong molecular fluorescence by highest-occupied molecular
Aso Y.   +5 more
core   +2 more sources

Inelastic electron tunneling spectroscopy of nanoporous gold films

open access: yes, 2014
We investigated the localized electronic properties of nanoporous gold films by using an ultra-high vacuum scanning tunneling microscope at low temperature (4.2 K).
Chen, M. W.   +10 more
core   +1 more source

Hybrid antibacterial microneedle patches against skin infections [PDF]

open access: yes, 2023
Skin and soft tissue infections (SSTIs) are a major healthcare burden that has increased in incidence since the beginning of the 21st century resulting in an annual spending of approximately 15 b$ in 2012 in the United States (US).1 Treatment of SSTIs ...
Ziesmer, Jill
core   +1 more source

Nonresonant Surface‐Enhanced Hyper Raman Scattering of Aromatic Amino Acids on Gold Nanoparticles

open access: yesJournal of Raman Spectroscopy, EarlyView.
The surface‐enhanced hyper Raman spectra of the three aromatic amino acids phenylalanine, tryptophan, and tyrosine, obtained with nonresonant excitation at a wavelength of 1064 nm, are reported. The data are discussed in the context of the interaction of the molecules with two gold nanoparticle plasmonic substrates, as well as intermolecular ...
Fariha Binte Rahman, Janina Kneipp
wiley   +1 more source

A general perspective of the characterization and quantification of nanoparticles: Imaging, spectroscopic, and separation techniques [PDF]

open access: yes, 2014
This article gives an overview of the different techniques used to identify, characterize, and quantify engineered nanoparticles (ENPs). The state-of-the-art of the field is summarized, and the different characterization techniques have been grouped ...
Anderson de la LLana, S.   +10 more
core   +3 more sources

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