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Hegeman 102

Pete Setaro

Morris Associates, Poughkeepsie, NY

Reem-Kayden Center

Soloman Garber

Yulia Genkina

Nabil Hossain

Anirban Joy

Reem-Kayden Center Laszlo Z. Bito '60 Auditorium

David Coffey

Candidate for the position in Physics

Within the grand search for greener energy sources, several new classes of solar cells are being pursued. One particularly attractive candidate is the organic solar cell, which one day might be printed as easily and cheaply as newspapers are today. However, the same properties that give this promise of easy manufacturing lead to extreme material disorder in current devices. As a result, discovering the physics mechanisms operating in these solar cells remains an area of intense research. In this talk I will describe recent efforts to gain this fundamental understanding including, 1) building new microscopes that can map the efficiency of these solar cells with extremely high resolution, 2) determining surface engineering techniques to control nanoscale structuring, and 3) designing organic solar cells so simple that even physicists can understand them.

Reem-Kayden Center Laszlo Z. Bito '60 Auditorium

Soren Konecky

Candidate for the position in Physics

Optical methods involving light scattering, spectroscopy, and imaging are ubiquitous in the study of materials ranging from dilute samples of atoms or molecules, to condensed media such as metals, semiconductors, and complex fluids. They are also integral tools in biology and medicine, as they allow us to study both the morphology and molecular composition of living organisms. However, more than a few hundred microns beneath the surface, optical methods which rely on ballistic light transport cannot be used to examine biological tissues, because all of the light that interrogates tissues at these depths is scattered multiple times. Accordingly, my research involves the development of new instrumentation and analytical methods to quantitatively determine the spatially varying optical properties of highly scattering media from measurements of multiply scattered light. This branch of optics is often referred to as “diffuse optics,” due to the fact that under certain conditions multiply scattered light propagates in a manner analogous to diffusion. Almost all biological processes and disease occur beneath the surface, and optical techniques have the potential to study them non-invasively, quantitatively, with high temporal and/or spatial resolution, and at low cost. For this reason, the study of diffuse optics is not only of fundamental interest, but also of great practical importance. In this seminar I will begin with a basic overview of diffuse optics. I will go on to describe my work developing Fourier domain and hyperspectral methods for diffuse optics, and how I am applying these methods to image brain function and disease.

Reem-Kayden Center Laszlo Z. Bito '60 Auditorium

Peter Skiff

Physics Program

The discovery of an unexpected acceleration of the expansion of the cosmos led to the awarding of the 2011 Nobel Prize to Saul Perlmutter, Brian Schmidt, and Adam Reiss. While cosmic expansion (the continuous separation of galaxies and clusters) is neatly described by the use of Einstein’s General Theory of Relativity and Gravity, this acceleration is not (quite). The most popular of the current speculations involves a mysterious “dark energy” that was somehow lurking undetected in the13.5 billion year old cosmos until about 7 billion years after the origin, inflation, and “big bang” events began the evolutionary track. Apparently this dark energy comprises about 75% of the total matter and energy of the universe. This talk will review the expansion models and the techniques used to measure the galactic motions that led to this discovery, including the theory and observation of type Ia Supernovae. It will be descriptive (no mathematics), in order to be accessible to a general audience.

Reem-Kayden Center Laszlo Z. Bito '60 Auditorium

LECTURE BEING HELD IN RKC AUDITORIUM**

A lecture by

Paul Cadden-Zimansky

Candidate for the position in Physics

From its isolation in 2004 to last year's Nobel Prize, the impressive material properties of graphene have been widely touted: it's a single atom thick, stronger than steel, a better conductor than copper, and more transparent than glass. But what has intrigued many condensed matter physicists is the unusual charge carriers that can exist in graphene, particularly when it is subjected to high magnetic fields. These "particles" that inhabit graphene's two-dimensional universe can be relativistic, have fractional charge or multiple spins, and may even obey new types of quantum statistics. This talk will present recent experiments demonstrating some of these properties, and explain why the topological nature of these high-field carriers make them a potential building block for quantum computation.

RKC 111

Sankalpa Khadka

5:00

Zhiwei Wu

5:15

Kimberly Wood

5:30

Siyao Du

5:45

Joy Sebesta

RKC 111

LECTURE BEING HELD IN RKC 111**

A lecture by

Nathan Ryan

Department of Mathematics

Bucknell University

The distribution of the primes among the positive integers has long fascinated mathematicians. In this talk I will discuss this distribution and describe some of its surprising characteristics.

RKC 111

Dimin Xu

5:00

Changwei Zhou

5:15

Yunxia Jia

5:30

Yongqing Yuan

5:45

Youseung Kim

RKC 101

Mariya Mitkova

5:00

Ke Cai

5:15

Zana Tran

5:30

Adriana Johnson

5:45

Jeanette Benham

Hegeman 102

RKC 111

Stergios Mentesidis

5:00

Lindsey Scoppetta

5:15

Evan Seitchik

5:30

Yuan Xu

RKC 111

Kerri-Ann Norton, '04

Department of BioMedical Engineering

Johns Hopkins School of Medicine

Breast cancer is one if the leading causes of cancer deaths in women. While breast cancer is a dynamic disease that may change morphology (shape) over time and depending on its placement within the tissue, diagnosis of the disease is usually accomplished by examining 2D slices of stained breast tissue and assigning the sample a grade and morphology. Unfortunately, the correlation between grade (a way of evaluating how irregular the nuclei look) and patient outcome is poor, depends on details of the classification method used, and is complicated by the frequent presence of multiple morphologies within a single sample. Here, I show two examples of how using mathematical biology provides insights into

the mechanisms that drive the disease and provides possible explanations for the difficulties in correlating morphology with patient outcome. Specifically, I use mathematical modeling techniques to study the progression of breast cancer over time under different cellular conditions and I use image processing to visualize the 3D morphology of breast cancer as compared to corresponding 2D slices. I find that differences in breast cancer morphology can result from different cancers with different cellular features or from cancers with the same cellular features at different time-points. I also find that early breast cancers with similar morphologies in 2D exhibit very different 3D morphologies. This work demonstrates the benefits of using mathematical and computational tools for studying cancer.

RKC 101

President & Actuary, Aquarius Capital

Michael Frank is the founder and president of Aquarius Capital. He is a health and life actuary with twenty four (24) years of experience, including executive management experience with insurance, reinsurance, employee benefits consulting and managed care entities. His company provides financial and management consulting to a variety of organizations including insurance companies, investment bankers, reinsurers, HMOs, managed care organizations, hospitals, disease management, third-party administrators, accounting firms, private equity funds, Fortune 500 companies and other organizations servicing the insurance/reinsurance industry in the US and internationally.

RKC lobby

Raed Al Abassee, Tedros Balema, Sheneil Black, Ke Cai, Nicole Camasso, Abhishek Dev, Erin Hannigan, Nabil Hossain, Matt Hughes, Nicole Kfoury, Youseung Kim, Thant Ko Ko, Brian Liu, Andres Medina, Jonathan Naito, Jessica Philpott, Eric Reed, Laura Schubert, Eva Shrestha, Nathaniel Steinaur, Joshua Tanner, Isabelle Taylor, Jasper Weinrich-Burd, Michael Weinstein, Will Wisseman, Dimin Xu, Yongqing Yuan, Feifan Zheng

RKC 111

Georgi Gospodinov

Bard College

Knot theory is central to low-‐dimensional topology and has many applications to physics, chemistry, biology, etc. We study knots up to isotopies, i.e., deformations that do not tear the knot or pass it through itself. So isotopic knots are thought of as the same. The question arises, given two knots, how can we tell if they are isotopic or not? Knot invariants are functions that assign an object (usually an algebraic object such as a number, a polynomial or a more complicated structure) to a knot. We use knot invariants to detect knots that are different, by studying the algebraic objects associated with the knots.

RKC 111

Laurence A. Marschall

Professor of Physics, Gettysburg College

Until 1995, we knew of no solar systems like our own in the universe. Yet in the past few years nearly 500 planets have been discovered orbiting stars other than our Sun using telescopes here on Earth, and, in early 2011 NASA announced the discovery of more than 1000 planets discovered from the orbiting Kepler mission. In this presentation I'll describe how this sudden flood of discoveries came about, explore some of the oddest and most noteworthy new worlds that have been investigated so far, and review what we have learned about the structure and history of our own planetary system from observing these far more distant planets.

Hegeman 107 (main Physics Lab)

Snacks will be provided

RKC lobby

Reem-Kayden Center

Thomas Anderson, Gregory Backus, Lionel Barrow, Julia Bennett, Alexandra Carver, Sebastien Cendron, Adam Chodoff, Sara Director, Elena Dragomir, Anastassia Etropolski, Margo Finn, Alexandros Fragkopoulos, Zoe Johnson-Ulrich, Melanie Kenney, Robert Kittler, Bella Manoim, Travis McGrath, Leandra Merola, Jules Moreau de Balasy, Olivia Nathanson, Angela Potenza, Nazmus Saquib, Madeline Schatzberg, Benjamin Selfridge, Erik Shagdar, Lisa Silber, Nathan Smith, Abigail Stevens, Adina-Raluca Stoica, Jacqueline Stone, Maksim Tsikhanovich, Zhexiu Tu, Regina Vaicekonyte, Stavros Velissaris, Michael Walker, Anshul Zota

RKC 111

Jan Cameron

Vassar College

In this talk we will introduce the ﬁeld of operator algebras, currently one of the most exciting and widely applicable areas of mathematics. Our main objects of study are collections of linear transformations on vector spaces with special properties. Operator algebras possess both a rich algebraic structure, and a meaningful notion of distance, and as such have seen many natural connections to ﬁelds as diverse as signal analysis, geometry, group theory, and dynamical systems. We won’t cover all this ground; but we will look at a few of the most important examples of operator algebras, and conclude, if time permits, with a glimpse at some current research problems.

RKC 111

Japheth Wood

MAT program and Math Circle

Bard College

Nim is an impartial combinatorial game with a long history and a mathematical theory. Jim (short for Japheth's Nim) is also an impartial combinatorial game that was invented by the speaker in February 2011! In this interactive math circle talk, participants learn how to play both Nim and Jim, and develop strategies that lead to a full understanding of the mathematical theory of both games. This talk will assume no mathematical or scientific background, and is open to all Bard students.

RKC 111

Marisa Hughes

Cornell University

A manifold is a space that locally "looks like" R

RKC 111

Ethan Bloch

Mathematics Program

Morse theory is an important tool in the study of smooth manifolds, which are the higher-dimensional analogs of surfaces. For example, Morse Theory is used in the proof of the higher-dimensional Poincare Conjecture. The idea of Morse Theory is to analyze a manifold by looking at the critical points of smooth maps from the manifold to the real numbers. This talk will provide an elementary introduction to the basic idea of Morse theory, and will discuss some recent analogs of Morse theory in polyhedral and combinatorial settings.

This talk should be accessible to students who have taken Calculus III.

o Concentrating in one of the programs in the SM&C Division (Biology, Chemistry, Computer Science, Mathematics or Physics). o Not currently receiving a DSS scholarship or award.o Cumulative GPA of 3.0 overall in the college. o Cumulative GPA of 3.5 in courses in the SM&C Division.