Figure 1From: Gold-ionic liquid nanofluids with preferably tribological properties and thermal conductivitySPR spectra of the samples (a) 2, (b) 3, (c) 4 in Table 1 after preparation and (d) the sample 4 keeping still for a month. The inset is the photograph of samples 1, 2, 3, and 4 standing for a month at room temperature.Back to article page