au colloidal nanoparticles  (Ted Pella)

Journal: The Journal of Physical Chemistry. C, Nanomaterials and Interfaces

Article Title: Size, Composition, and Phase-Tunable Plasmonic Extinction in Au–Sn Alloy Nanoparticles

doi: 10.1021/acs.jpcc.5c00563

Figure Lengend Snippet: Au–Sn nanoparticle synthesis and optical analysis of synthesized nanoparticles. (a) Scheme showing the synthesis of the Au–Sn nanoparticles. UV–visible spectra of Au–Sn nanoparticles with increasing amounts of Sn added, (b) 5 nm, (c) 10 nm, (d) 15 nm, (e) 20 nm, and (f) 30 nm nanoparticles. LSPR maximum for each Sn-added amount for (g) 5 nm, (h) 10 nm, (i) 15 nm, (j) 20 nm, and (k) 30 nm nanoparticles. LSPR linewidths for increasing amounts of Sn added for (l) 5 nm, (m) 10 nm, (n) 15 nm, (o) 20 nm, and (p) 30 nm nanoparticles.

Article Snippet: The synthesis of metal nanoparticles requires Au nanoparticle seed colloids (0.05 mg/mL, Ted Pella), tin (IV) chloride (SnCl 4 ·5H 2 O, 99.99%, Alfa Aesar), poly (vinylpyrrolidone) (PVP, MW = 40,000, Alfa Aesar), and sodium borohydride (97+%, Alfa Aesar).

Techniques: Synthesized

Journal: The Journal of Physical Chemistry. C, Nanomaterials and Interfaces

Article Title: Size, Composition, and Phase-Tunable Plasmonic Extinction in Au–Sn Alloy Nanoparticles

doi: 10.1021/acs.jpcc.5c00563

Figure Lengend Snippet: XRD of Au–Sn nanoparticles with increased amounts of Sn added. Increasing Sn-added amounts in 2.5% increments, relative to the Au content, for (a) 5, (b) 10, (c) 15, (d) 20, and (e) 30 nm nanoparticle seeds.

Article Snippet: The synthesis of metal nanoparticles requires Au nanoparticle seed colloids (0.05 mg/mL, Ted Pella), tin (IV) chloride (SnCl 4 ·5H 2 O, 99.99%, Alfa Aesar), poly (vinylpyrrolidone) (PVP, MW = 40,000, Alfa Aesar), and sodium borohydride (97+%, Alfa Aesar).

Techniques:

Journal: The Journal of Physical Chemistry. C, Nanomaterials and Interfaces

Article Title: Size, Composition, and Phase-Tunable Plasmonic Extinction in Au–Sn Alloy Nanoparticles

doi: 10.1021/acs.jpcc.5c00563

Figure Lengend Snippet: Phase nucleation changes as a function of Sn incorporation into Au–Sn nanoparticles. Plot showing the amount of Sn incorporated when the two intermetallic phases are observed for 5, 10, 15, 20, and 20 nm nanoparticles.

Article Snippet: The synthesis of metal nanoparticles requires Au nanoparticle seed colloids (0.05 mg/mL, Ted Pella), tin (IV) chloride (SnCl 4 ·5H 2 O, 99.99%, Alfa Aesar), poly (vinylpyrrolidone) (PVP, MW = 40,000, Alfa Aesar), and sodium borohydride (97+%, Alfa Aesar).

Techniques:

Journal: The Journal of Physical Chemistry. C, Nanomaterials and Interfaces

Article Title: Size, Composition, and Phase-Tunable Plasmonic Extinction in Au–Sn Alloy Nanoparticles

doi: 10.1021/acs.jpcc.5c00563

Figure Lengend Snippet: Designed absorption of Au–Sn nanoparticles at 500 nm. (a) UV–visible spectrum of five nanoparticles with designed LSPRs at 500 nm. The dashed line highlights the LSPR for pure Au seeds at ∼520 nm. (b) XRD of five nanoparticles with designed LSPRs at 500 nm. (c) STEM image and EDS maps of a 30 nm Au–Sn nanoparticle with 40.0% Sn added. All scale bars are 10 nm.

Article Snippet: The synthesis of metal nanoparticles requires Au nanoparticle seed colloids (0.05 mg/mL, Ted Pella), tin (IV) chloride (SnCl 4 ·5H 2 O, 99.99%, Alfa Aesar), poly (vinylpyrrolidone) (PVP, MW = 40,000, Alfa Aesar), and sodium borohydride (97+%, Alfa Aesar).

Techniques:

Journal: Nanoscale Advances

Article Title: Influence of photothermal and plasma-mediated nano-processes on fluence thresholds for ultrafast laser-induced cavitation around gold nanoparticles †

doi: 10.1039/d3na00743j

Figure Lengend Snippet: Top panels: Detection probability curves obtained experimentally for a specific nanoparticle sample/irradiation regime, at varying concentrations. Circles indicate experimental measurements and lines, fitting curves based on and . The examined concentrations in each figure (shown in 10 9 ml −1 ) correspond to the ones indicated in the figures on the bottom panel. As the concentration becomes smaller, the fluence that corresponds to a 50% detection probability increases. Bottom panels: Detection probability as a function of particle concentration is plotted for the experimental data, which demonstrates a good agreement with the proposed model of (shown with solid black lines).

Article Snippet: As for the examined samples, aqueous colloidal solutions of Au nanoparticles were purchased from NanoComposix and NanoPartz.

Techniques: Irradiation, Concentration Assay

Journal: Nanoscale Advances

Article Title: Influence of photothermal and plasma-mediated nano-processes on fluence thresholds for ultrafast laser-induced cavitation around gold nanoparticles †

doi: 10.1039/d3na00743j

Figure Lengend Snippet: (a) Size-dependent, experimentally evaluated fluence thresholds of detectable cavitation bubbles of spherical AuNPs (left) and the ones of AuNS (right) for all applied laser pulse widths. (b) Results of double 55 fs pulse experiments as a function of pulse delay. All fluence thresholds have been normalized to the one acquired under single 55 fs pulse excitation.

Article Snippet: As for the examined samples, aqueous colloidal solutions of Au nanoparticles were purchased from NanoComposix and NanoPartz.

Techniques:

Journal: Nanoscale Advances

Article Title: Influence of photothermal and plasma-mediated nano-processes on fluence thresholds for ultrafast laser-induced cavitation around gold nanoparticles †

doi: 10.1039/d3na00743j

Figure Lengend Snippet: (a) Calculated ratio of the energy deposited in the plasma ( E p ) and in the nanoparticle ( E NP ) at the experimental threshold fluencies. (b) Diagram of the ratio versus pulse width. The solid black curves correspond to the crossover pulse width t p,t , which marks the transition from plasma-mediated to photothermal cavitation for various nanoparticle sizes (shown in [nm]). The curves were calculated based on and numerical analysis shown in Section S3 of the ESI. The ratios E p / E NP for the cases of AuNS, 200 nm, 150 nm, and 100 nm particles, as shown in (a), are included for comparison. For the cases of 80 nm, 60 nm, and 40 nm particles, becomes smaller and all their corresponding values reside within the plasma-mediated region, below the transition curve (not shown in the diagram).

Article Snippet: As for the examined samples, aqueous colloidal solutions of Au nanoparticles were purchased from NanoComposix and NanoPartz.

Techniques: Comparison