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NanoEngineering Corporation...maneuvering matter on a molecular scale... Slide 1 Conventional DMA Voltage Sweep Single “pixel” Electrometer Collected Signal.

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Presentation on theme: "NanoEngineering Corporation...maneuvering matter on a molecular scale... Slide 1 Conventional DMA Voltage Sweep Single “pixel” Electrometer Collected Signal."— Presentation transcript:

1 NanoEngineering Corporation...maneuvering matter on a molecular scale... Slide 1 Conventional DMA Voltage Sweep Single “pixel” Electrometer Collected Signal Ion Trajectories Spread out according to size DMA Bottom Plate DMA Top Plate Low Voltage Medium Voltage No Signal High Voltage Wasted Signals Collected Signal Air Flow Field VOLTAGE SWEEP (Duty Cycle = 1%) Ion Current (fA) Sweep Voltage (kV) Proportional to particle / ion size Proportional to Particle / ion concentration Output Spectrum Sample inlet slit Sample outlet slit Electric Field Ion-trajectories (rays) rotate around inlet slit with increased voltage

2 NanoEngineering Corporation...maneuvering matter on a molecular scale... Slide 2 DMA + CCD Constant Voltage Ion CCD Ion Current (fA) IonCCD Pixel Proportional to particle / ion size Output Spectrum Proportional to Particle / ion concentration

3 NanoEngineering Corporation...maneuvering matter on a molecular scale... Slide 3 First Stage Ion Sampling Slit Second Stage Ion Sampling Slit Ion CCD Constant Voltage Mid Voltage Lower Voltage Higher Voltage Ion CCD DMA 2 + CCD 2-Stage Tandem DMAs + CCD

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