Jason R. Bochinski

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Stark deceleration has been utilized for slowing and trapping several species of neutral, groundstate polar molecules generated in a supersonic beam expansion. Due to the finite physical dimension of the electrode array and practical limitations of the applicable electric fields, only molecules within a specific range of velocities and positions can be(More)
Radiative decay of excited P1 states to metastables is expected to limit attainable lifetimes in magnetooptic traps ~MOTs! containing alkaline-earth-metal-like atoms. We present measurements of power-dependent loss from a (6s)S0-(6s6p) P1 ytterbium MOT, show that the observed power dependence is consistent with radiative decay from the (6s6p)P1 excited(More)
The process of edge electrospinning relies on forming electricfield-induced instabilities (i.e., jets) in a polymer solution bath which act as sources for nanofiber production. As such, it depends on the fundamental interactions between the fluid and the electric field, which are studied in this report as a function of solution parameters (viscosity,(More)
The interplay between an applied electric field and fluid properties was studied for a polymer solution forming high quality nanofibers via electrospinning. Unconfined electrospinningin which a fluid thin film or bath exposed to an electric field spontaneously generates many parallel fiber-forming jetsis a practical approach to achieving a high(More)
Heat emanates from gold nanorods (GNRs) under ultrafast optical excitation of the localized surface plasmon resonance. The steady state nanoscale temperature distribution formed within a polymer matrix embedded with GNRs undergoing pulsed femtosecond photothermal heating is determined experimentally using two independent ensemble optical techniques.(More)
We report bunching, slowing, and acceleration of a supersonically cooled beam of diatomic hydroxyl radicals (OH). In situ observation of laser-induced fluorescence along the beam propagation path allows for detailed characterization of longitudinal phase-space manipulation of OH molecules through the Stark effect by precisely sequenced inhomogeneous(More)
A novel, simple geometry for high throughput electrospinning from a bowl edge is presented that utilizes a vessel filled with a polymer solution and a concentric cylindrical collector. Successful fiber formation is presented for two different polymer systems with differing solution viscosity and solvent volatility. The process of jet initiation, resultant(More)
Self-assembled monolayers are a ubiquitous laboratory tool and have been the subject of many experimental investigations which have primarily focused on static properties of full coverage monolayers, with the maximum density and ordering possible. In this work, dynamics within low density, planar siloxane self-assembled monolayers are studied utilizing(More)
An improved system for creating a pulsed, low-temperature molecular beam of hydroxyl radical (OH) radicals has been developed. We use a pulsed discharge to create OH from H2O seeded in Xe during a supersonic expansion, where the high-voltage pulse duration is significantly shorter than the width of the gas pulse. The pulsed discharge allows for control of(More)
A special class of molecules that are important to many subfields in molecular dynamics and chemical physics, namely free-radical molecules, now enjoy a significant degree of center-of-mass motion control in the laboratory frame. The example reported in this paper concerns the hydroxyl radical sOHd, which, after the internal degrees of freedom are cooled in(More)