Physical Electronics and Surface Physics

Contains report on one research project.National Aeronautics and Space Administration (Grant NGR-22-009-091)M. I. T. Cabot Solar Energy FundJoint Services Electronics Programs (U. S. Army, U. S. Navy, and U. S. Air Force) under Contract DA 36-039-AMC-03200(E

StudySnap

In today’s modern education world, there have been several emerging technologies that were created to expand the learning experience beyond the traditional pencil and paper. Such items include online planners and numerous online student resource websites, but some students may find that there are sometimes too many resources. With so many resources available to them, students may find it overwhelming and may not even know where to start when it comes time to study. StudySnap aims to solve the unorganized and cluttered nature of study time by combining a clean resource organization tool with a smart and automatic resource search engine that provides students with resources created by their peers that are specifically tailored to their needs. Using various cloud computing services, natural language processing techniques, and Optical Character Recognition (OCR), students will be able to access a variety of notes about various topics. The system will analyze the user’s interests or needs, and help find resources posted by other students that are specifically related to those needs. The user will then be able to select which notes they like, and view and rate the notes as needed. The goal is that by providing an all-in-one study system, students can remove some of the clutter that traditionally comes with studying and help get them the marks they are looking for

Physical Electronics and Surface Physics

Contains research objectives and reports on two research projects.National Aeronautics and Space Administration (Grant NGR-22-009-091)M. I. T. Cabot Solar Energy FundJoint Services Electronics Programs (U. S. Army, U.S. Navy, and U.S. Air Force) under Contract DA 28-043-AMC-02536(E

Physical Electronics and Surface Physics

Contains research objectives, summary of research and reports on three research projects.National Aeronautics and Space Administration (Grant NGR-22-009-091)M.I.T. Cabot Solar Energy FundJoint Services Electronics Programs (U. S. Army, U.S. Navy, and U. S. Air Force) under Contract DA 28-043-AMC-02536(E

Physical Electronics and Surface Physics

Contains research objectives, summary of research and reports on two research projects.Joint Services Electronics Programs (U. S. Army, U. S. Navy, and U. S. Air Force) under Contract DAAB07-71-C-0300National Aeronautics and Space Administration (Grant NGR 22-009-091

Physical Electronics and Surface Physics

Contains reports on two research projects.National Aeronautics and Space Administration (Grant NGR 22-009-091)Joint Services Electronics Programs (U. S. Army, U. S. Navy, and U. S. Air Force) under Contract DA 28-043-AMC-02536(E

Development and testing of the Active Temperature, Ozone and Moisture Microwave Spectrometer (ATOMMS) cm and mm wavelength occultation instrument

We present initial results from testing a new remote sensing system called the Active Temperature, Ozone and Moisture Microwave Spectrometer (ATOMMS). ATOMMS is designed as a satellite-to-satellite occultation system for monitoring climate. We are developing the prototype instrument for an aircraft to aircraft occultation demonstration. Here we focus on field testing of the ATOMMS instrument, in particular the remote sensing of water by measuring the attenuation caused by the 22 GHz and 183 GHz water absorption lines. Our measurements of the 183 GHz line spectrum along an 820 m path revealed that the AM 6.2 spectroscopic model provdes a much better match to the observed spectrum than the MPM93 model. These comparisons also indicate that errors in the ATOMMS amplitude measurements are about 0.3%. Pressure sensitivity bodes well for ATOMMS as a climate instrument. Comparisons with a hygrometer revealed consistency at the 0.05 mb level, which is about 1% of the absolute humidity. Initial measurements of absorption by the 22 GHz line made along a 5.4 km path between two mountaintops captured a large increase in water vapor similar to that measured by several nearby hygrometers. A storm passage between the two instruments yielded our first measurements of extinction by rain and cloud droplets. Comparisons of ATOMMS 1.5 mm opacity measurements with measured visible opacity and backscatter from a weather radar revealed features simultaneously evident in all three datasets confirming the ATOMMS measurements. The combined ATOMMS, radar and visible information revealed the evolution of rain and cloud amounts along the signal path during the passage of the storm. The derived average cloud water content reached typical continental cloud amounts. These results demonstrated a significant portion of the information content of ATOMMS and its ability to penetrate through clouds and rain which is critical to its all-weather, climate monitoring capability

Atom chips on direct bonded copper substrates

We present the use of direct bonded copper (DBC) for the straightforward fabrication of high power atom chips. Atom chips using DBC have several benefits: excellent copper/substrate adhesion, high purity, thick (> 100 microns) copper layers, high substrate thermal conductivity, high aspect ratio wires, the potential for rapid (< 8 hr) fabrication, and three dimensional atom chip structures. Two mask options for DBC atom chip fabrication are presented, as well as two methods for etching wire patterns into the copper layer. The wire aspect ratio that optimizes the magnetic field gradient as a function of power dissipation is determined to be 0.84:1 (height:width). The optimal wire thickness as a function of magnetic trapping height is also determined. A test chip, able to support 100 A of current for 2 s without failing, is used to determine the thermal impedance of the DBC. An assembly using two DBC atom chips to provide magnetic confinement is also shown.Comment: 8 pages, 5 figure

Physical Electronics and Surface Physics

Contains research objectives and reports on four research projects.National Aeronautics and Space Administration (Grant NGR-22-009-091)M. I. T. Cabot Solar Energy FundJoint Services Electronics Programs (U. S. Army, U.S. Navy, and U.S. Air Force) under Contract DA 36-039-AMC-03200(E