Park et al. Nanoscale Research Letters 2012, 7:351 http://www.nanoscalereslett.com/content/7/1/351 Page 4 of 5 Figure 3 Analysis data of Ag NWGP. (a) Transmittance curves of an Ag NWGP on PET substrates. (b) Polarized light of an LCD panel passing through the Ag NWGP and (c) blocked after rotating the Ag NWGP. are similar to the theoretical expectations simulated by the Gsolver program. A little difference between the ex- perimental and the simulated data might be due to the imperfect line width, shape, and smoothness of the Ag nanowires made by LB-nTM. The maximum and mini- mum transmittances of the Ag NWGP at 800 nm were 80% and 10%, respectively. The polarization of light can be confirmed simply with a liquid crystal display (LCD) monitor by rotating the NWGP, as shown in Figures 3b and c. The brightness of the monitor through the Ag NWGP was changed by rotating it. The Ag NWGP fabri- cated on a quartz substrate was stable up to temperatures of about 500 °C with only 1% reduced in transmittance. Conclusions In summary, we described a one-step fabrication of an Ag NWGP using LB-nTM. Ag nanowire arrays, pro- duced by LB-nTM using an Ag-particle solution, exhib- ited fine fidelity with a high aspect ratio (approximately 1.73). The Ag NWGPs were fabricated on 2.5 in. PET substrates and showed a high transmission and a con- trast ratio for the range of visible light. This method is an ideal fabrication technique for automated direct printing machines that produce large area NWGPs on diverse substrates with no additional steps. Competing interests The authors declare that they have no competing interests.