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Full-Text Articles in Physics

Computational Techniques For Scattering Amplitudes, Juliano A. Everett Dec 2018

Computational Techniques For Scattering Amplitudes, Juliano A. Everett

Publications and Research

Scattering amplitudes in quantum field theory can be described as the probability of a scattering process to happen within a high energy particle interaction, as well as a bridge between experimental measurements and the prediction of the theory.

In this research project, we explore the Standard Model of Particle Theory, it’s representation in terms of Feynman diagrams and the algebraic formulas associated with each combination.

Using the FeynArts program as a tool for generating Feynman diagrams, we evaluate the expressions of a set of physical processes, and explain why these techniques become necessary to achieve this goal.


Characterization Of Magnetic Thin Films Using The Magneto Optic Kerr Effect, Nicholas J. Savino Apr 2018

Characterization Of Magnetic Thin Films Using The Magneto Optic Kerr Effect, Nicholas J. Savino

Student Scholar Showcase

Understanding magnetic properties of materials allows for advances in applications such as data storage. The Magneto-Optic Kerr Effect (MOKE) displays the reflective response a magnetic material has to a magnetic field. When polarized light reflects off of a magnetic material, the polarization orientation can change. The application of an external magnetic field can affect how much this polarization changes in a non-linear manner. Hysteresis loops are created when examining the relationship between intensity of the reflected light to the applied magnetic field provide information about magnetic properties of that material, such as the coercive field and field retention. Preliminary measurements ...


Nanoscale Thin Films, Rob Snyder Jan 2015

Nanoscale Thin Films, Rob Snyder

Nanotechnology Teacher Summer Institutes

An activity that makes a nanoscale film of oleic acid on water. The student will

  • Learn about Ben Franklin’s observations of a thin film that had a nanoscale dimension.

  • Create a very thin film with a very dilute solution of oleic acid.

  • Use data you collect to determine if you made a thin film with a nanoscale dimension that formed on the surface of water.

  • Learn about the molecular interactions that resulted in the formation of the thin film.

  • Be introduced to the Big Ideas of Nanoscale Self-Assembly


Powers Of Ten: From Meters To Nanometers And Beyond, Rob Snyder Jan 2015

Powers Of Ten: From Meters To Nanometers And Beyond, Rob Snyder

Nanotechnology Teacher Summer Institutes

The goal of this activity is to guide students toward an understanding of nanoscale dimensions by:

  • Making a number of measurements using meter sticks, magnifiers, microscopes and spectrometers so students can make observations and generate their own data.

  • Using scientific notation to compare the measurements they have made with the dimensions of very small structures


Gelatin Diffusion Experiment, Jennifer Welborn Jan 2015

Gelatin Diffusion Experiment, Jennifer Welborn

Nanotechnology Teacher Summer Institutes

In this activity, nanotech participants will:

- See how food dyes and gelatin are used to model the delivery of nanoscale medicines to cells in the human body - Measure diffusion distances of 3 different colors of food dye by: Eye, photo image on a computer, ADI software (Analyzing Digital Images) Some useful websites:


The Science Of Two Dimensional Materials (Powerpoint), Jun Yan Jan 2015

The Science Of Two Dimensional Materials (Powerpoint), Jun Yan

Nanotechnology Teacher Summer Institutes

Graphene is a single atomic sheet of graphite.

Exercise: how much graphene do we need to cover the surface of the empire state building?


Atomic Force Microscopes, Rob Snyder, Jennifer Welborn Jan 2015

Atomic Force Microscopes, Rob Snyder, Jennifer Welborn

Nanotechnology Teacher Summer Institutes

PowerPoint overview. A student activity that builds an atomic force microscope model.


Ozone, Uv, And Nanoparticles, Morton Sternheim, Jennifer Welborn Jan 2015

Ozone, Uv, And Nanoparticles, Morton Sternheim, Jennifer Welborn

Nanotechnology Teacher Summer Institutes

•Ultraviolet light causes skin damage and cancer •Ozone in the stratosphere blocks UV •Sunscreen blocks UV, partly •Nanoparticles in sunscreen improve blocking Sunscreen PowerPoint and activities based on NanoSense web site:

http://nanosense.sri.com/activities/clearsunscreen/index.html


Self Assembly, Mark Tuominem, Jennifer Welborn, Rob Snyder Jan 2015

Self Assembly, Mark Tuominem, Jennifer Welborn, Rob Snyder

Nanotechnology Teacher Summer Institutes

No abstract provided.


Nanomedicine, Mark Tuominen Jan 2015

Nanomedicine, Mark Tuominen

Nanotechnology Teacher Summer Institutes

An overview of nanomedicine. The end goal of nanomedicine is improved diagnostics, treatment and prevention of disease. Nanotechnology holds key to a number of recent and future breakthroughs in medicine.


Magnetic Memory: Data Storage And Nanomagnets, Mark Tuominem Jan 2015

Magnetic Memory: Data Storage And Nanomagnets, Mark Tuominem

Nanotechnology Teacher Summer Institutes

An overview of magnetic data storage and a simple activity.


Imaging Molecular Structures With Atomic Force Microscopy, Unurbat Erdenemunkh, Tyler Flanagan Oct 2013

Imaging Molecular Structures With Atomic Force Microscopy, Unurbat Erdenemunkh, Tyler Flanagan

Student Works

As part of the LEEP project we repaired the Atomic Force Microscopy (AFM), and wrote a user manual on using AFM. Then we scanned Self Assembly of Copolymer Films collaboration with Prof. Sergio Granados –Focil and Copper Oxide Nanocubes with Professor Prof.Luis Smith.


Making Solar Cells, D. Venkataraman Jan 2013

Making Solar Cells, D. Venkataraman

Nanotechnology Teacher Summer Institutes

Overview of solar energy and photovoltaic cells. Making a cuprous oxide cell activity.


Nanofilters For Clean Water, Morton Sternheim Jan 2009

Nanofilters For Clean Water, Morton Sternheim

Nanotechnology Teacher Summer Institutes

•The problem: adequate clean water •Kinds of filters •Desalination of salt water •Cleaning polluted water •Hands on nanofiltration experiment Adapted from the Nanosense project: http://nanosense.sri.com/activities/finefilters/index.html


More On Powers Of Ten, Morton Sternheim Jan 2009

More On Powers Of Ten, Morton Sternheim

Nanotechnology Teacher Summer Institutes

A powers of ten personation and activity adapted from the Nanosense project:

http://nanosense.sri.com/activities/sizematters/index.html