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Martin Iedema

Institution
Pacific Northwest National Laboratory

Projects

Personal Samplers for Traffic-Related Particle Exposures in NYC

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
James Cowin
Project type
Exploratory Research
The goal is to develop and test air samplers for personal use that are smaller, quieter, "smarter" (see below), and longer-lived (10 to 100 days) than currently available. To be monitored…

Hydronium Hydroxide at Platinum Interfaces

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
James Cowin
Project type
Large-Scale EMSL Research
Hydronium hydroxide is in principle a very high-energy form of water. Normally it is considered too unstable to exist. Recent work at PNNL finds a particularly stable form of water adsorbed on a…

Ice Nucleation on Aged Field Aerosols

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
James Cowin
Project type
Large-Scale EMSL Research
The number, density, and lifetime of clouds are strongly dependent on the kind of aerosol particles that are present, that act as "cloud nucleation centers" (CNC). This is one of the major…

Ionic Transport of Hydrogen in Structured Soft Materials

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
James Cowin
Project type
Large-Scale EMSL Research
We will explore how the motion of hydrogen in the form of hydronium is controlled in a nanometer-sculpted multilayer composite water/hydrocarbon film, and how the motion of the ion alters the…

Aerosol Aging and Climate Change (Cowin's NOAA, PNNL Scope #47840)

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
James Cowin
Project type
Exploratory Research
Using easily field-deployable, time-resolved aerosol collectors (TRAC and TAQ) create sample archives that permit quantitative, single particle-size and elemental-composition analysis of mixed…