Nearly ballistic carbon nanotube array transistors are realized with current densities outmatching conventional semiconductors.

Previous studies of plasma microturbulence have indicated that the fluctuation power scales with radial wave number, k⊥ , like k⊥−2→k⊥−3.5 for ≥2 cm−1. This implies low k fluctuations may dominate spectrum. Beam emission spectroscopy (BES) has been developed to provide spatially localized measurements density in this region spectrum (k⊥ ≤2 cm−1). A 20-channel system installed on TFTR which images one heating neutral beams (via fiber optics) onto a set photoconductive photodiode detectors....

The challenge of assembling semiconducting single-wall carbon nanotubes (s-SWCNTs) into densely packed, aligned arrays has limited the scalability and practicality high-performance nanotube-based electronics technologies. deposition s-SWCNTs via floating evaporative self-assembly (FESA) promise for overcoming this challenge; however, mechanisms behind FESA need to be elucidated before technique can improved scaled. Here, we gain a deeper understanding process by studying stationary analogue...

Abstract Specifications grading ("specs grading," or "standards-based grading") bases course assessment on students' meeting various objectives, each at above a minimum level of proficiency. While there can be wide range variability among courses that pursue "specs almost all share the following features: (1) assessments are graded pass/fail; (2) students given multiple opportunities to re-take and demonstrate competency. With shift in focus attaining outcomes, overall grade moves away from...

First of a kind measurements high-frequency ion temperature microturbulence in fusion-grade plasmas have been made TFTR. The fluctuations and carbon density were found to spectra similar those the across plasma radius. ratio relative fluctuation levels, (/T)/(ñ/n), is 2 ± 0.5 from r/a = 0.59 0.99. fact that this greater than unity consistent with general expectations gradient driven turbulence theory suggests drift modes dominate trapped electron turbulent spectrum. exhibit narrow transition...

We demonstrate control of the topography strain-induced wrinkle patterns through interplay between bulk and nanoscale cross-linked top layer plasma treated, spin-coated polydimethylsiloxane (PDMS) thin films. The different morphological phases observed, varying from herringbones to caps, are in agreement with recent theoretical predictions. cap phase exhibits short-range 3-fold-symmetric close-packed self-organization, demonstrating a bottom-up pathway toward wafer-scale production ordered,...

A fast method and compact device for mixing sub-microliter fluid samples contained in glass capillaries is presented. The rapidly moved back forth by air volume displacement driven a piezo-ceramic actuator. Rapid of different fluids achieved via diffusion between the main capillary thin film it deposits on wall through its motion. Bubbles are processed out use an asymmetric velocity profile. simple analysis model used to optimize design elucidate mechanisms involved mixing. time found be...

A high-throughput, high-frequency charge exchange recombination spectroscopy diagnostic (HF-CHERS) has been developed to give localized measurements of ion temperature and parallel velocity microturbulence (T̃i,ṽ∥) in the plasma core Tokamak Fusion Test Reactor (TFTR). HF-CHERS uses an interference filter spectrometer measure intensity fluctuations simultaneously over several wavelength intervals line shape n=8–7 transition C+5 (529 nm). T̃i ṽ∥ are deduced from moments emitted shape. Using...

Plasma density turbulence has been measured with the beam emission spectroscopy (BES) diagnostic system, using a low-power neutral He0 and H0 as species. In general, (588 nm) provided best signal-to-noise ratio due to its lower edge plasma background interference. Simultaneous measurements of fluctuations have made BES Langmuir probes; spectra are seen be essentially identical, fluctuation amplitudes from both diagnostics in close agreement. A poloidal coherence length about 2–4 cm was...

An automated biomechatronic submicroliter fluid handling system for processing deoxyribonucleic acid (DNA) has been developed in the Genomation Laboratory, Department of Electrical Engineering, University Washington, Seattle. This first generation system, ACAPELLA-1K, can process 1000 samples 8 h preparation DNA sequencing using sample volumes ten times smaller than current state-of-the art manual and instrumentation. The is based upon a proof-of-concept that was by Laboratory. ACAPELLA-1K...

Abstract A versatile platform for programming and data acquisition: Excel Visual Basic Applications We have switched to a new software instrument interface collection in our upper-­‐division Sensors Laboratory course. This was done after investigating several options meetings with industrial advisory board. change motivated by campus-­‐mandated operating system, plus expiring licenses. decided on the (VBA), which resides Microsoft Office suite (in particular, MS Excel). meets recommendations...

Abstract NOTE: The first page of text has been automatically extracted and included below in lieu an abstract Session 1625 Educating Designers on Design via Distance Learning Edward Lumsdaine, Harold A. Evensen, Paula F. Zenner Michigan Technological University Monika Consultant This paper describes the experiences Department Mechanical Engineering-Engineering Mechanics at Tech teaching conceptual capstone design to corporate designers, it presents challenges adapting traditional course...

The perturbations in ion temperature, density and parallel velocity resulting from sawtooth disruptions TFTR are measured with a novel diagnostic. local thermal diffusivity, particle diffusivity momentum determined high power discharge at r/a = 0.64 by fitting the observed pulses to simple model of radial diffusive propagation heat, particles caused crash. incremental χiinc, is found be similar amplitude electron diffusivities obtained steady state 1-D balance analysis, an order magnitude...

Abstract NOTE: The first page of text has been automatically extracted and included below in lieu an abstract Session 1566 Developing Industry Sponsored Capstone Learning Environment Harold A. Evensen, Paula F. Zenner, Thomas R. Grimm, Martin D. Tervo Michigan Technological University A capstone learning experience that educates over two hundred mechanical engineering seniors annually developed the Department Mechanical Engineering-Engineering Mechanics at University. two-course sequence...

A technique has been developed for high lane density loading of small-volume DNA samples in a horizontal agarose gel. This investigated with simple hand-held tool that is made to couple sample output from new capillary-based automation system. The approach consists piercing the gel pressurized capillaries and relieving pressure shortly before withdrawal. pressurization prevents capillary aspirating buffer keeps at tip capillary, so it may be sucked into during method shown adequate wide...

Abstract Adapting an Engineering Physics Measurements Laboratory to Incorporate Metrology ConceptsWe are restructuring existing required, two-credit advanced laboratory coursearound the subject matter of metrology and design experiments. This is beingdone for several reasons: provide a unifying theme course, whichpreviously was collection unrelated experiments; more clearly identify thepurpose course students, faculty, outside observers; aclearer link between skills student gains in methods...

Abstract A Hands-on, Introductory Course for First-year Engineering Students in Microsystems and NanomaterialsWe have recently developed a one-credit course designed first-year studentsconsidering the new major Nanomaterials Engineering. It isbased on successful “Engineering Projects” offered through our GeneralEngineering department, which has subsequently been made into popularsummer program prospective students. The goal of this course, whichmeets two laboratory hours per week, is to...

Abstract NOTE: The first page of text has been automatically extracted and included below in lieu an abstract Implementation Some Dynamic Systems Material into the Mechanical Engineering Curriculum Introduction In today’s engineering education environment it is important to provide students with educational material that will enhance or supplement their learning process. It obvious multimedia internet capabilities available today, a tremendous opportunity for innovative pedagogy. An example...

Abstract NOTE: The first page of text has been automatically extracted and included below in lieu an abstract Main Menu Session 1380 Metamorphysics: Changing to EP at UW-Platteville Harold T. Evensen University Wisconsin-Platteville In 1996 the Physics program became Engineering program, which achieved ABET accreditation Fall 2001. While many features a good physics are also those engineering requires explicit coverage outcomes such as design, communication skills, interdisciplinary work,...

Abstract We restructured an existing required, two-credit advanced laboratory course around the subject matter of metrology and design experiments. Here, we present a significant extension from work that was presented in 2013. The now uses international standards terminology as set documents Joint Committee for Guides Metrology (JCGM) to guide students description execution Students learn use appropriate vocabulary defined “VIM,” handle uncertainty using process described “GUM.” advance...