Physics Senior Projects

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Orientation Waves in Colloidal Crystals

Date posted: May 1st, 2015

Rachel Capelouto with Rolfe Petschek
Orientation Waves in Colloidal Crystals

Crystals are usually thought of as the condensation of density waves.  However, in some systems, notably blue phase liquid crystals, and, according to recent results in our group also hard tetrahedra, the formation of a crystal comes from the condensation of an “Orientation Wave” in which theorientation of the constituent parts vary periodically, and this periodic variation condenses.  …Read more.

Design of a Persistent Switch for 0.35T Magnesium DiBoride Superconducting Magnets

Date posted: May 1st, 2015

Sean Kinzler with Michael Martens
Design of a Persistent Switch for 0.35T Magnesium DiBoride Superconducting Magnets
Recent progress in magnet design and persistent joints using for the magnesium diboride, MgB2, superconductor has made clear the increasingly important role of the persistent switch in magnet quench protection. …Read more.

Improving the I-V characteristics of Molydinium DiSulfide transistors h-Boron Nitride

Date posted: May 1st, 2015

Vipul Malik with Philip Feng
Improving the I-V characteristics of Molydinium DiSulfide transistors h-Boron Nitride
Molybdenum disulfide (MoS2) transistors have attracted considerable attention. Molybdenum disulfide (MoS2) transistors on boron nitride (BN) substrates in particular show interesting I-V characteristics. …Read more.

Investigating the growth mechanism of atomically thin transition metal dichalcogenides

Date posted: May 1st, 2015

Christopher Wagner with Xuan Gao
Investigating the growth mechanism of atomically thin transition metal dichalcogenides
Monolayers of transition metal dichalcogenides (TMDCs), such MoS­­2­ and MoSe­2­ ­, have been the subject of increased interest due to their promising potential in nanoelectronics, optoelectronics, and other fields. …Read more.

Nanoscale Membrane Structures for Radiation Detection

Date posted: May 1st, 2014

Matthew Krupcale with Philip Feng
Nanoscale Membrane Structures for Radiation Detection

Radiation detectors are used in a wide range of environments from medical to nuclear and research facilities. The use of nanoscale membranes for radiation detection has largely been unexplored, despite having interesting optoelectronic properties. …Read more.

Photovoltaic Degradation Analysis and Two Diode Simulated Models

Date posted: May 1st, 2014

Shay Mathews with Roger French, Timothy Peshek, and Yang Hu
Photovoltaic Degradation Analysis and Two Diode Simulated Models

An understanding of the degradation process of photovoltaic modules during real world use is crucial to extending their lifetime and reliability. …Read more.

Physics and Instrumentation of Growing MoS2 Crystals

Date posted: May 1st, 2014

Christopher Miller with Philip Feng
Physics and Instrumentation of Growing MoS2 Crystals

This senior project is aimed at developing physical vapor deposition, transfer printing, and other related techniques for making ultra thin semiconducting membrane structures, which have potential to be engineered into transducers and sensors (e.g., gas sensors or single-particle detectors) on chip to enable functional integrated microsystems. …Read more.

Persistent Switch Design for MgB2 Superconducting Magnet

Date posted: May 1st, 2014

Jeffrey Oleski with Michael Martens and David Doll
Persistent Switch Design for MgB2 Superconducting Magnet

High quality MRI imaging requires that the main magnetic field remain temporally stable to within 0.1 ppm per hour, which is achieved by operating the main superconducting magnet in persistent current mode. …Read more.

A Novel Route to Synthesis of Sn3N4 and ZnSnN2 Thin Films

Date posted: May 1st, 2014

Andrew Oriani with Kathleen Kash
A Novel Route to Synthesis of Sn3N4 and ZnSnN2 Thin Films

III-Nitride direct band-gap materials have long been used in opto-electronic applications ranging from consumer high density optical storage devices and LED’s to ultraviolet research lasers.1-2 By replacing the group-III sublattice with an II-IV ordered pair sublattice it is possible to create a new class of ternary wide direct band-gap materials collectively known as the II-IV-Nitrides.3 Recent experiments in plasma-assisted vapor-liquid-solid growth have yielded polycrystalline ZnSnN2 and/or competing binary phases, depending on growth conditions.4 An alternative replacement reaction method for synthesis of Sn3N4 and ZnSnN2 involving the annealing of a precursor thin film on glass has been proposed, modeled after successful conversion of a thin film of SnO2 to ZnSnP2.5 The goal of these experiments is to study the controlled conversion of SnO2 thin films to Sn3N4 by exposure to NH3 and alternatively, by exposure to both NH3 and Zn vapors, to ZnSnN2. …Read more.

Desktop MRI Console

Date posted: May 1st, 2014

Slavko Rebec with Mark Griswold
Desktop MRI Console

In modern MRI courses there is a severe lack of hands on interactions with clinical MRI machines due to the high cost of the equipment. …Read more.

Incorporation of plasma into CVD graphene growth

Date posted: May 1st, 2013

Jake Arwe with Xuan Gao
Incorporation of plasma into CVD graphene growth
[paper]
Graphene is a 2D crystalline sheet of Carbon bonded together in a hexagonal lattice. …Read more.

Aluminum zinc oxide transparent conductors for optical cavity enhanced polymer photovoltaics

Date posted: May 1st, 2013

Emily Griffin with Ken Singer
Aluminum zinc oxide transparent conductors for optical cavity enhanced polymer photovoltaics
[paper]
Indium tin oxide is the ubiquitous transparent conductor used in all liquid crystal displays and thin film photovoltaic devices.  …Read more.

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