TY  - CONF
  - Pour, N. K.; Kayal, N.; Jia, G.; Eisenhawer, B.; Falk, F.; Nightingale, A.; DeMello, J. C.; Georgiev, Y. M.; Petkov, N.; Holmes, J. D.; Nolan, M.; Fagas, G.
  - SPIE Proceedings
  - A miniaturised autonomous sensor based on nanowire materials platform: the SiNAPS mote
  - 2013
  - May
  - Published
  - 1
  - Scopus: 1 ()
  - Vol. 8763
  - 87631Q-1
  - 87631Q-1
  - A micro-power energy harvesting system based on core(crystalline Si)-shell(amorphous Si) nanowire solar cells together with a nanowire-modified CMOS sensing platform have been developed to be used in a dust-sized autonomous chemical sensor node. The mote (SiNAPS) is augmented by low-power electronics for power management and sensor interfacing, on a chip area of 0.25 mm2. Direct charging of the target battery (e.g., NiMH microbattery) is achieved with end-to-end efficiencies up to 90 % at AM1.5 illumination and 80% under 100 times reduced intensity. This requires matching the voltages of the photovoltaic module and the battery circumventing maximum power point tracking. Single solar cells show efficiencies up to 10 % under AM1.5 illumination and open circuit voltages, Voc, of 450-500 mV. To match thebattery’s voltage the miniaturised solar cells (~1 mm2 area) are connected in series via wire bonding. The chemical sensor platform (mm2 area) is set up to detect hydrogen gas concentration in the low ppm range and over a broad temperature range using a low power sensing interface circuit. Using Telran TZ1053 radio to send one sample measurement of both temperature and H2 concentration every 15 seconds, the average and active power consumption for the SiNAPS mote are less than 350 nW and 2.1 μW respectively. Low-power miniaturised chemical sensors of liquid analytes through microfluidic delivery to silicon nanowires are also presented. These components demonstrate the potential of further miniaturization and application of sensor nodes beyond the typical physical sensors, and are enabled by the nanowire materials platform.
  - http://spie.org/
  - 10.1117/12.2017520
DA  - 2013/05
ER  - 

@inproceedings{V212169996,
   = {Pour, N. K. and  Kayal, N. and  Jia, G. and  Eisenhawer, B. and  Falk, F. and  Nightingale, A. and  DeMello, J. C. and  Georgiev, Y. M. and  Petkov, N. and  Holmes, J. D. and  Nolan, M. and  Fagas, G.},
   = {SPIE Proceedings},
   = {{A miniaturised autonomous sensor based on nanowire materials platform: the SiNAPS mote}},
   = {2013},
   = {May},
   = {Published},
   = {1},
   = {Scopus: 1 ()},
   = {Vol. 8763 },
  pages = {87631Q-1--87631Q-1},
   = {{A micro-power energy harvesting system based on core(crystalline Si)-shell(amorphous Si) nanowire solar cells together with a nanowire-modified CMOS sensing platform have been developed to be used in a dust-sized autonomous chemical sensor node. The mote (SiNAPS) is augmented by low-power electronics for power management and sensor interfacing, on a chip area of 0.25 mm2. Direct charging of the target battery (e.g., NiMH microbattery) is achieved with end-to-end efficiencies up to 90 % at AM1.5 illumination and 80% under 100 times reduced intensity. This requires matching the voltages of the photovoltaic module and the battery circumventing maximum power point tracking. Single solar cells show efficiencies up to 10 % under AM1.5 illumination and open circuit voltages, Voc, of 450-500 mV. To match thebattery’s voltage the miniaturised solar cells (~1 mm2 area) are connected in series via wire bonding. The chemical sensor platform (mm2 area) is set up to detect hydrogen gas concentration in the low ppm range and over a broad temperature range using a low power sensing interface circuit. Using Telran TZ1053 radio to send one sample measurement of both temperature and H2 concentration every 15 seconds, the average and active power consumption for the SiNAPS mote are less than 350 nW and 2.1 μW respectively. Low-power miniaturised chemical sensors of liquid analytes through microfluidic delivery to silicon nanowires are also presented. These components demonstrate the potential of further miniaturization and application of sensor nodes beyond the typical physical sensors, and are enabled by the nanowire materials platform.}},
   = {http://spie.org/},
   = {10.1117/12.2017520},
  source = {IRIS}
}