Immersive 3D Human-Computer Interaction System

Scalable Fabrication of Quasi-One-Dimensional Gold Nanoribbons for Plasmonic Sensing

“…We first determined the spectral noise by calculating the standard deviations of dip 1 and peak 2 wavelength positions over 3 min for arrays immersed in blank buffer. 19 The spectral noise for dip 1 and peak 2 were 4.2 × 10 −2 nm and 1.0 × 10 −1 nm, respectively. Based on the corresponding bulk refractive index sensitivity of the features, the spectral noise values of these two spectral features translate to a minimum practical resolution of 8.2 × 10 −5 RIU and 1.7 × 10 −3 RIU, respectively.…”

“…12 Nanoplasmonic sensors enable label-free and sensitive sensing capabilities for chemical and biological targets making these platforms attractive for applications related to food safety, defense, environmental protection, and biomedical devices. 10,[13][14][15][16][17][18][19][20][21][22] Fabrication of plasmonic substrates with nanometer-scale features is critical for practical applications. Producing sub-micron features often relies on state-of-the-art nanolithography tools, such as electron-beam or focused ion-beam lithographies.…”

“…58 Of note, despite relatively high spectral noise, the practical resolution of dip 1 is comparable to that obtained from commercially available oxide-coated nanoplasmonic substrates used in previous work, highlighting the advantage of high bulk refractive index sensitivity. 19,59 Since dip 1 was the most responsive spectral feature to environmental changes based on bulk RI measurements, we characterized lipid vesicle adsorption via wavelength shifts for dip 1 (Figure 4b). Baseline spectra were obtained in buffer (10 mM tris(hydroxymethyl)aminomethane (Tris), pH 7.5, with 150 mM NaCl) (Figure 4c).…”