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Mechanically Detected Magnetic Resonance


ESR of Nitroxide Spin Probes
Current protocols for the mechanical detection of magnetic resonance cannot be used to study spin-labeled biomolecules due to their unfavorable relaxation rates, however studying such labels represents a direct path to biological relevance, not offered by studying nuclear spins. Our goal is to develop new protocols for sample preparation and spin manipulation that will enable single electron spin imaging experiments on macromolecules of biological interest. >>>Read More
 


 

Attonewton-Sensitivity Cantilever Fabrication and Characterization

 

Fabrication of Attonewton-Sensitive Magnet-tipped Cantilevers

Mechanical detection of magnetic resonance opens up exciting possibilities for characterizing soft materials at nanometer-scale, and potentially atomic-scale, resolution. Our goal is to fabricate cantilevers with overhanging magnetic tips that are capable of imaging potentially any thin-film sample with atomic resolution.  >>>Read More

 

 

 

Electron Force Microscopy of Organic Semiconductors

 

Charge Trapping
Organics are an exciting new low cost alternative to certain electronics applications. We study possible mechanisms in which charges trap, a common malady hindering performance. >>>Read More

 

 

 

Charge Injection
An ohmic contact is critical to the efficiency of organic electronics so that the charge transfer process does not limit efficiency. Disentangling material properties from device properties remains pertinent to the study of several materials. >>>Read More
 

 

Organic Photovoltaics
Organics are well suited for large area applications and have good absorptive properties, which make them a promising candidate for photovoltaics. Even though much research has gone in to improving performance, the nature of charge generation remains an open question. >>>Read More
 

 

 

Fluctuations Near Surfaces

 

Dielectric Fluctuations
Surface induced noise is the primary obstacle for imaging single electron spins using a magnetic cantilever. Understanding the source of such surface noise is essential to achieving high sensitivity spin measurements.
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Charge Fluctuations
Improving the mobility in organic transistors is essential to their integration into everyday electronics. Unfortunately, there are few tools available to microscopically image mobility in organic transistors.
>>>Read More