Voila Scientific Needs

Particle Science & Technology Solutions

Plasmonic nanoparticles

Plasmonic nanoparticles

Plasmonic nanoparticles

Plasmonic nanoparticles are metal nanoparticles – including gold, silver, and platinum – that are highly efficient at absorbing and scattering light. By changing the size, shape, and surface coating, the optical properties of the nanoparticles can be tuned from the ultraviolet to the visible to the near-infrared regions of the electromagnetic spectrum. By shifting the absorption and scattering, the color of nanoparticle dispersions and films can also be tuned: for example, solutions of spherical gold nanoparticles are ruby red in color due to the strong scattering and absorption in the green region of the spectrum, while solutions of silver nanoparticles are yellow due to the plasmon resonance in the blue region of the spectrum (red and green light is unaffected).

Plasmonic nanoparticles, due to their unique optical properties are increasingly being incorporated into commercial products and technologies. These technologies, which span fields ranging from photovoltaics to biological and chemical sensors, take advantage of the extraordinary efficiency of gold and silver plasmonic nanoparticles at absorbing and scattering light. Additionally, unlike most dyes and pigments, plasmonic nanoparticles have a color that depends on their size and shape and can be tuned to optimize performance for individual applications without changing the chemical composition of the material.

Gold nanospheres

λmax
(± 10nm)
Nanocube
width
515 nm 5 nm
519 nm 7 nm
521 nm 10 nm
524 nm 12 nm
519 nm 15 nm
521 nm 20 nm
521 nm 30 nm
525 nm 40 nm
528 nm 50 nm
535 nm 60 nm
539 nm 70 nm
541 nm 80 nm
566 nm 100 nm

Gold nanoshells

λmax
(± 20nm)
660 nm
800 nm
980 nm
> 980nm (custom)

Gold nanorods

λmax
(± 20nm)
660 nm
800 nm
980 nm

Platinum nanospheres

λmax
(± 20nm)
Nanoparticle
diameter
240 nm 30 nm
240 nm 30 nm
240 nm 30 nm

Silver nanocubes

λmax
(± 10nm)
Nanocube
width
510 nm 75 nm
560 nm 100 nm

Silver nanospheres

λmax
(± 15nm)
Nanosphere diameter
410 nm 5 nm
369 nm 10 nm
400 nm 20 nm
407 nm 30 nm
414 nm 40 nm
420 nm 50 nm
433 nm 60 nm
447 nm 70 nm
452 nm 75 nm
461 nm 80 nm
489 nm 100 nm
495 nm 200 nm

Silver nanoplates

λmax
(± 50nm)
550 nm
650 nm
750 nm
850 nm
950 nm
1050 nm
> 1150nm (custom)

Custom development

Our standard products can be modified or new materials can be developed, to meet your needs. Contact Us for more information.