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Advances in scanning electron microscopy (SEM) enable the high-resolution imaging of single nanoparticles (NPs) with sizes well below 10 nm. The SEM analysis in transmission mode (T-SEM) of NPs on thin film supports has many benefits when compared to the analysis of NPs on bulk substrates. The enhanced material (mass - thickness) contrast of the T-SEM imaging mode is well suited for in-depth and, particularly valuable, to very accurate, traceable, lateral dimensional measurements of NPs. Compared to samples prepared on bulk substrates, T-SEM with energy dispersive X-ray spectroscopy (EDS) achieves a drastically improved spatial resolution of the emitted X-rays. The poor signal-to-noise ratio of the X-ray spectra emitted by a single nanoparticle (NP) can be improved by the use of high-sensitivity (high collection solid angle) silicon drift (SDD), energy-dispersive X-ray spectrometers (EDS). The EDS spectral imaging of a single NP with a spatial resolution below 10 nm has become possible. This is demonstrated by means of various examples of nanostructures. Advanced data processing of T-SEM EDS results sets the stage for the automated classification of NPs by feature analysis. This method combines the detection of morphological structures of interest by image processing of T-SEM micrographs with the chemical classification by EDS.

This article examines the generative mechanisms and underlying contingencies of innovative search. Extending behavioral arguments to the public sector context, it proposes that changes in innovative activity reflect either of two organizational search processes. The first process, commonly known as problemistic search, is triggered by negative performance feedback and initiated to identify appropriate solutions for the performance problem at hand. The second process is known as slack search. It is driven by the availability of excess resources, which decision makers seek to employ most fruitfully. In addition to these fundamental driving forces of innovative search, the proposed behavioral model attributes important moderating roles to organizational slack and regulatory endorsement. In particular, it suggests that public service organizations with high levels of available slack are most likely to engage in problemistic search following perceived performance shortfalls. Similarly, it is assumed that problemistic search is most salient among organizations with full regulatory endorsement. Conversely, when endorsement is low, slack search gains in importance. These behavioral propositions are tested based on novel panel data from the entire population of public nonspecialist hospital organizations in the English National Health Service. Findings from fixed-effects panel regression analyses offer broad support for the proposed behavioral model of innovative search, which has important implications for public administration research and practice.

Extended abstract of a paper presented at Microscopy and Microanalysis 2013 in Indianapolis, Indiana, USA, August 4 – August 8, 2013.

Extended abstract of a paper presented at Microscopy and Microanalysis 2013 in Indianapolis, Indiana, USA, August 4 – August 8, 2013.

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.