Graphene on Ultra-fine 2000 Mesh Copper TEM Grids

Crystalline Structure of Graphene Film

HAADF Image of single-layer Graphene (bar = 1nm) on Holey Silicon Nitride product.
Ref: J. Kotakoski, et. al. Nano Letters, 2015

This Graphene is directly supported by #G2000HA ultra-fine 2000mesh copper TEM grids with 6.5µm circular holes and a pitch of 12.5µm. Transmission for this type of grid is 41%. The ultra-fine 2000 mesh TEM grid is supported by #4510 Synaptek 1 x 2mm slotted grid to give it the required stiffness. Total thickness of the graphene, 2000 mesh and Synaptek grid stack is approximately 108µm. The slot in the Synaptek grid is 1 x 2mm. The graphene sheet covers the complete TEM grid and leaves freestanding graphene covering the 6.5µm holes. Total usable area is approximately 75% in the 1 x 2mm slot area due to unavoidable folds and wrinkles in the graphene sheet. Available with single, 2, 3-5 and 6-8 layer graphene sheets. Research-ready product, suitable for UHR imaging or as an experimental platform. 

High-resolution TEM image of single-layer Graphene showing a typical region for imaging.
Marker bar = 5nm

EELS Spectrum of single-layer Graphene

Typical Raman Spectrum of single-layer Graphene

Graphene Specifications

• The sheet resistance for a single layer of Graphene Film is 600Ω/sq.
• The thickness for a single layer of Graphene is approximately 0.35nm, Transparency is in the order of 96.4%.
  
• The thickness for 2 layers of Graphene is approximately 0.7nm, Transparency is in the order of 92.7%.
• The thickness for 3-5 layers of Graphene is between 1.0 - 1.7nm, Transparency ranges from 90.4 - 85.8%.
• The thickness for the 6-8 layers of Graphene is between 2.1 - 2.8nm, Transparency ranges from 83.2 - 78.5%.

The PELCO^® Graphene has an in-plane modulus of 0.9TPa, compared to 1.0 TPa for Graphene produced by the Scotch Tape™ method.