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Nanotechnology Overview

PELCO® Gold Nanoarrays

Substrates of Quasi-ordered Arrays of Gold Nanoparticles

Nanoparticles serve as significant research tools in better understanding and unraveling the mysteries embodied in nanotechnology research. Colloidal gold particles, in particular, are both excellent catalysts for nanowire growth of a variety of materials and active sites for SERS (surface enhanced Raman scattering). The colloidal gold particles are applied with a proprietary process and baked in air at 250°C to create high purity gold particles secured on the substrate.

The line of PELCO® Gold Nanoarrays are unique products that provide:

  • Substrate particle densities suited to SERS or material growth
  • A choice of available substrates
  • Excellent batch size uniformity and uniform particle distribution
  • Highly stable products
Figure 1: SEM image of a 15nm PELCO® Normal Density Gold Nanoarray. The histogram to the right shows the size distribution, mean and standard deviation for the array.

Uniform and regular coverage of nanoparticles is highly desirable for systematic and reproducible results. Ordered arrays are ideal. PELCO® Gold Nanoarrays overcome the problems associated with other methods:

  • The high cost of electron beam lithography
  • The random dispersion from adsorption or evaporative colloid deposition
Figure 2: SERS – AFM image of an isolated carbon nanotube on a PELCO® Gold Nanoarray (30nm Au on glass). The Raman spectrum was measured at 1mW with a 25mW HeNe (633nm) laser. Courtesy of Steve Cronin, USC.

The PELCO® Gold Nanoarrays are available on a number of substrates:

  • Glass: 5 x 10mm
  • Quartz: 5 x 10mm
  • Silicon: 5 x 10mm

The gold nanoparticles have the following characteristics:

  • 15 or 30nm average particle diameter
  • Excellent uniformity and particle distribution
  • Normal density coating for material growth (Figure 1)
  • High density coating for SERS (Figures 2 and 3)
Figure 3: SEM image of a PELCO® array demonstrating high density coverage for 30nm gold particles on a quartz substrate. The characteristic plasmon resonance absorption curve, is shown on the right. The Histogram, below, is indicating the particle size distribution of the array.

Figure 4: ZnO nanowires grown using a PELCO® Gold Nanoarray (gold nanoparticles on a quartz substrate) [1,2]

1. Geng, C. et al., 2004. Adv. Funct. Mater. 2004, 14:589-594.
2. Huang, et al, 2001. Adv. Mater., 13:113-116.

Prod # Description Unit Price Order / Quote
Normal Density: particle distribution suited for material growth, e.g. silicon and ZnO nanowires
High Density: particle distribution suited for SERS applications
PELCO® 15nm Gold Nanoarrays
32100 PELCO® 15nm Gold Nanoarray, Normal Density
on 5 x 10mm Glass Substrate 		each $125.00
Qty:
32101 PELCO® 15nm Gold Nanoarray, Normal Density
on 5 x 10mm Quartz Substrate 		each 150.00
Qty:
32102 PELCO® 15nm Gold Nanoarray, Normal Density
on 5 x 10mm Silicon Substrate 		each 125.00
Qty:
32110 PELCO® 15nm Gold Nanoarray, High Density
on 5 x 10mm Glass Substrate 		each 150.00
Qty:
32111 PELCO® 15nm Gold Nanoarray, High Density
on 5 x 10mm Quartz Substrate 		each 200.00
Qty:
32112 PELCO® 15nm Gold Nanoarray, High Density
on 5 x 10mm Silicon Substrate 		each 150.00
Qty:
PELCO® 30nm Gold Nanoarrays
32200 PELCO® 30nm Gold Nanoarray, Normal Density
on 5 x 10mm Glass Substrate 		each 125.00
Qty:
32201 PELCO® 30nm Gold Nanoarray, Normal Density
on 5 x 10mm Quartz Substrate 		each 150.00
Qty:
32202 PELCO® 30nm Gold Nanoarray, Normal Density
on 5 x 10mm Silicon Substrate 		each 125.00
Qty:
32210 PELCO® 30nm Gold Nanoarray, High Density
on 5 x 10mm Glass Substrate 		each 150.00
Qty:
32211 PELCO® 30nm Gold Nanoarray, High Density
on 5 x 10mm Quartz Substrate 		each 200.00
Qty:
32212 PELCO® 30nm Gold Nanoarray, High Density
on 5 x 10mm Silicon Substrate 		each 150.00
Qty: