DREAMS-33
Mission Date: Launch date to be determined no sooner than one week before all science systems fully tested.
Science:
Material Science Payload from Stingelin Lab at Georgia Tech with passive and active experiments
Organic Solar Cell Testing (10 cells with 8 measurements each with analog voltage measured through non-inverting op-amps with gain of 2
Photodiode Transmission Measurements through various samples measuring combinations of UV-A, UV-B, UV-C, and visible/IR - total of 18 photodiode measurements
Moisture Sensor Test - recording O2, relative humidity, temperature and pressure underneath the sample
Capacitance - measuring capacitance changes in polymer sample
Geiger Counter measuring alpha, beta, gamma radiation levels
Temperature measurements taken inside payload box, on top next to samples, and two inside of moisture sensor experiments.
Total sensor data channels: 115 taken at 10Hz for 3 hours = 12.4 million data points --> ~20 MB of memory with image and video data (in the range of 12GB)
Target Launch Date: TBD Release at 11:15am {arrive at site by 10am}, Recovery ~ 2pm
Stingelin lab
Controls – 10 samples
IR ARC (2) - one IR and UV-A sensor
UV ARC (2) - one IR and UV-A sensor
Neat glass (2) - one IR and UV-A sensor
Environmental control (4) - one IR and UV-A sensor, one with a UV-B and UV-C sensors - glass and no glass
Organic photovoltaic blends (Alex and Mark) – 12 samples
P3HT:Y6 (2) – passive exposure
P3HT:Y6 with IR ARC (2) - one IR sensor
P3HT:Y6 with UV ARC (2) - one with UV-A sensor
Pm6:Y6 (2) – passive exposure
Pm6:Y6 with IR ARC (2) - one IR sensor
Pm6:Y6 with UV ARC (2) - one with UV-A sensor
P3HT (Alex and Mark) – 8 samples
P3HT neat (2) – passive exposure
P3HT neat with IR ARC (2) - one with UV-A/IR sensor
P3HT neat with UV ARC (2) - one with UV-A/IR sensor
P3HT PE (2) – passive exposure?
TiO2 hydrate/PVA hybrids (Victoria) – 10 samples
Hybrids 10 vol% Ti drop-cast thick films (2) – camera/observe color change
Hybrids 10 vol% Ti (2) - one IR and UV-A sensor
Hybrids 40 vol% Ti (2) - one IR and UV-A sensor
Hybrids 60 vol% Ti (2) - one IR and UV-A sensor
Hybrids 80 vol% Ti (2) - one IR and UV-A sensor
UV sensors (Aziz) – 8 samples
Films 10, 40, 60, and 80 vol% Ti (4) - does this need sensor(s)?
Capacitors 10, 40, 60, and 80 vol% Ti (4) - connect to cap circuit to measure change capacitance
Polymeric substrates for flexible electronics – 4 samples
Substrates (4) – do we want to measure anything to them or only passively expose them?
Moisture barriers (Tanner)
Samples (2) – RH, O2, Temp [each with custom box]
Flying moisture and oxygen-sensitive pellets or films as a control.
Relative humidity and oxygen sensors can be placed in the balloon.
Collaborators
Correa-Baena Lab solar cells – 8 samples
Solar cells (8-10) - measure voltage (need to know voltage range)
8 different halides (I, Br) ratios.
How many pixels of each cell should be measured for statistics?
Reynolds - Conductivity
Samples? (2) - Use a current source to pass a small current through it, use gain in opamp circuit to amplify the potential drop, solve for resistance = 1 / conductivity [needs to be tested]