1. Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. Scheme for visualizing the THz radiation source. 1: object-source of the THz radiation, 2: THz objective of polyethylene HDPE (See Ref. 2), 3: heat filter (See Ref. 2), 4: THz-to-IR converter matrix, 5: IR camera Mirage P (See Ref. 1). Figure Legend: From: Terahertz-to-infrared converter based on metal nanoparticles: potentialities of applications J. Nanophoton. 2012;6(1):061716-061716. doi:10.1117/1.JNP.6.061716

2. Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. Black body radiation at temperature 300 K. We briefly approximated the human body’s radiation by this distribution halved. Figure Legend: From: Terahertz-to-infrared converter based on metal nanoparticles: potentialities of applications J. Nanophoton. 2012;6(1):061716-061716. doi:10.1117/1.JNP.6.061716

3. Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. Phonon DOS in Ni at temperature T=300 K (solid line, reproduced from Refs. 9 and 10). The dashed lines show approximate resolution of the phonon DOS curve into three components. Figure Legend: From: Terahertz-to-infrared converter based on metal nanoparticles: potentialities of applications J. Nanophoton. 2012;6(1):061716-061716. doi:10.1117/1.JNP.6.061716

4. Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. Electronic density of states in Ni (See Ref. 12). The vertical dash line indicates the Fermi energy position. Figure Legend: From: Terahertz-to-infrared converter based on metal nanoparticles: potentialities of applications J. Nanophoton. 2012;6(1):061716-061716. doi:10.1117/1.JNP.6.061716

5. Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. Power Q against the temperature rise ΔTm for Ni nanoparticle of radius R0=1.2 nm in gelatin spherical shell. Figure Legend: From: Terahertz-to-infrared converter based on metal nanoparticles: potentialities of applications J. Nanophoton. 2012;6(1):061716-061716. doi:10.1117/1.JNP.6.061716

6. Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. Temperature rise ΔT versus heating/cooling time t for a Ni nanoparticle of radius R0=1.2 nm in gelatin spherical shell for five values of Qi from Table 3. Figure Legend: From: Terahertz-to-infrared converter based on metal nanoparticles: potentialities of applications J. Nanophoton. 2012;6(1):061716-061716. doi:10.1117/1.JNP.6.061716

7. Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. Radial distributions of temperature for a Ni nanoparticle of radius R0=1.2 nm in gelatin spherical shell for five values of Qi from Table 3. Figure Legend: From: Terahertz-to-infrared converter based on metal nanoparticles: potentialities of applications J. Nanophoton. 2012;6(1):061716-061716. doi:10.1117/1.JNP.6.061716

8. Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. Transmittance of the 1.2-m air path under normal conditions. Figure Legend: From: Terahertz-to-infrared converter based on metal nanoparticles: potentialities of applications J. Nanophoton. 2012;6(1):061716-061716. doi:10.1117/1.JNP.6.061716

9. Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. Transmittance of different clothes versus wavelength. Figure Legend: From: Terahertz-to-infrared converter based on metal nanoparticles: potentialities of applications J. Nanophoton. 2012;6(1):061716-061716. doi:10.1117/1.JNP.6.061716

10. Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. Electron density of states versus electron energy in a CHF nanoparticle at room temperature (See Ref. 18). The vertical dotted lines above EF show unoccupied states of light electrons. Figure Legend: From: Terahertz-to-infrared converter based on metal nanoparticles: potentialities of applications J. Nanophoton. 2012;6(1):061716-061716. doi:10.1117/1.JNP.6.061716