Journal: Nature Communications

Article Title: Triboelectric microplasma powered by mechanical stimuli

doi: 10.1038/s41467-018-06198-x

Figure Lengend Snippet: Electric characteristics of FR-TENG and discharge, and optical emission spectra of N 2 corona discharge. a Circuit schematic measuring electric characteristics of triboelectric nanogenerator (TENG) and microplasma. The voltage, current and charge waveforms are measured using a high-voltage probe (HVP, Tektronix P6015A) and two electrometers (Keithley 6514, one for current, and the other for charge in different ranges), respectively. GND, electrical ground. Switching position 1, 2, and 3 means measurement of open circuit voltage, short circuit current and charge, and simultaneously electric characteristics with microplasma (as load), respectively. b , c Open circuit voltage and short circuit current of TENG with various rotational speeds. d–f Electric characteristic of dielectric barrier discharge (DBD) capillary plasma. d In five electric cycles voltage, current, and charge waveform. e In one electric cycle voltage, current, and charge waveform. There are three obvious discharges in the cycle. Arrows indicate the sequence of characteristics evolving. The number 1–3 and the blue gray bars correspond to three sequential discharges in ( e ). f Corresponding to e , Lissajous pattern of current–voltage and charge–voltage describing the circulation of characteristics in one full electric cycle. g – i Electric characteristics of microspark discharge, which are similar to d – f , respectively. However, voltage fluctuation in microspark discharge is more significant than DBD. In microspark discharge, the amplitudes of current and charge transferring through the electrodes gap are several orders higher than those in DBD. j Five-stage voltage multiplier circuit for converting AC to DC with high voltage, which is used in N 2 corona discharge. k , l Optical emission spectra of N 2 corona discharge. k Intensity of three spectral lines, voltage and current simultaneously change with time. The inset shows details of I / V around the time of t = 25.00 s. l Emission spectrum of N 2 2nd positive system in UV–vis region at the time of t = 4.0 s (Ocean Optics Maya2000 Pro, 200–650 nm, integration time is 100 ms.)

Article Snippet: Corresponding to Fig. , we conducted DBD argon microplasma simulations via COMSOL (Fig. ) and Simulink (Fig. ), respectively, with the same experimental conditions as shown in Supplementary Fig. .

Techniques: Clinical Proteomics, Sequencing, Transferring

Journal: Nature Communications

Article Title: Triboelectric microplasma powered by mechanical stimuli

doi: 10.1038/s41467-018-06198-x

Figure Lengend Snippet: Applications of triboelectric plasma in surface treatment and luminescence. a , b Contact angle of fluorinated ethylene propylene (FEP) surface before and after microplasma treatment. a Schematic of surface treatment in use of triboelectric plasma. b Untreated surface, 1 min, 3 min, and 6 min treated by argon plasma, respectively. c , d Example of microplasma luminescence photograph showing patterns of triboelectric nanogenerator (TENG), Tsinghua, and Georgia Tech (scale bar, 20 mm). d No Photoshop (NIKON D700 @ 70 mm, ISO 6400, 30 s, f/2.8). e , f A plasma disk driven by freestanding rotary (FR) TENGs (scale bar, 20 mm). f Photos with different exposure time (NIKON D700 @ 70 mm, ISO 6400, f/7.1)

Article Snippet: Corresponding to Fig. , we conducted DBD argon microplasma simulations via COMSOL (Fig. ) and Simulink (Fig. ), respectively, with the same experimental conditions as shown in Supplementary Fig. .

Techniques: Clinical Proteomics