Monolithic Micro Light-Emitting Diode/Metal Oxide Nanowire Gas Sensor with Microwatt-Level Power Consumption

ACS Sensors ◽  
2020 ◽  
Vol 5 (2) ◽  
pp. 563-570 ◽  
Author(s):  
Incheol Cho ◽  
Young Chul Sim ◽  
Minkyu Cho ◽  
Yong-Hoon Cho ◽  
Inkyu Park
Keyword(s):  
Metal Oxide ◽  
Power Consumption ◽  
Gas Sensor ◽  
Light Emitting Diode ◽  
Light Emitting

scholarly journals Reflectance-Based Organic Pulse Meter Sensor for Wireless Monitoring of Photoplethysmogram Signal

Biosensors ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 87 ◽  
Author(s):  
Fahed Elsamnah ◽  
Anubha Bilgaiyan ◽  
Muhamad Affiq ◽  
Chang-Hoon Shim ◽  
Hiroshi Ishidai ◽  
...  
Keyword(s):  
Power Consumption ◽  
Structural Design ◽  
Signal To Noise Ratio ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Wireless Monitoring ◽  
Organic Light ◽  
Reduced Power Consumption

This paper compares the structural design of two organic biosensors that minimize power consumption in wireless photoplethysmogram (PPG) waveform monitoring. Both devices were fabricated on the same substrate with a red organic light-emitting diode (OLED) and an organic photodiode (OPD). Both were designed with a circular OLED at the center of the device surrounded by OPD. One device had an OLED area of 0.06 cm2, while the other device had half the area. The gap distance between the OLED and OPD was 1.65 mm for the first device and 2 mm for the second. Both devices had an OPD area of 0.16 cm2. We compared the power consumption and signal-to-noise ratio (SNR) of both devices and evaluated the PPG signal, which was successfully collected from a fingertip. The reflectance-based organic pulse meter operated successfully and at a low power consumption of 8 µW at 18 dB SNR. The device sent the PPG waveforms, via Bluetooth low energy (BLE), to a PC host at a maximum rate of 256 kbps data throughput. In the end, the proposed reflectance-based organic pulse meter reduced power consumption and improved long-term PPG wireless monitoring.

Multispecies Single Light-Emitting Diode Mid-Infrared Gas Sensor for Space Habitats and Vehicles

New Space ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 77-86
Author(s):  
Akshita Parupalli ◽  
Anthony C. Terracciano ◽  
Zachary Loparo ◽  
Kyle Thurmond ◽  
Justin Urso ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Light Emitting Diode ◽  
Mid Infrared ◽  
Light Emitting

A Multilayered Polymer Light-Emitting Diode Using a Nanocrystalline Metal-Oxide Film as a Charge-Injection Electrode

2007 ◽  
Vol 19 (5) ◽  
pp. 683-687 ◽  
Author(s):  
S. A. Haque ◽  
S. Koops ◽  
N. Tokmoldin ◽  
J. R. Durrant ◽  
J. Huang ◽  
...  
Keyword(s):  
Oxide Film ◽  
Metal Oxide ◽  
Light Emitting Diode ◽  
Charge Injection ◽  
Nanocrystalline Metal ◽  
Light Emitting ◽  
Polymer Light Emitting Diode ◽  
A Charge ◽  
Metal Oxide Film

Organic Light-Emitting Diode Microcavities from Transparent Conducting Metal Oxide Photonic Crystals

Nano Letters ◽  
2011 ◽  
Vol 11 (4) ◽  
pp. 1457-1462 ◽  
Author(s):  
Daniel P. Puzzo ◽  
Michael G. Helander ◽  
Paul G. O’Brien ◽  
Zhibin Wang ◽  
Navid Soheilnia ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Metal Oxide ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Transparent Conducting
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