In 1968, the pioneer work of Lethokov predicted that laser action could be realized in randomly distributed scattering media. In 1994, Lawandy used laser pulse to pump the colloidal solution consisting of TiO2. Once the gain approached and surpassed the threshold value,laser action could be observed. The term “random laser” appeared. The revealed mechanism is that: EM wave (electromagnetic wave) multiple scattering in disorder medium induces a localized eigen-mode with collective behavior, which can trap the light wave in a local region. When the gain surpasses a threshold, it should drive system to select this eigen-mode to emit light wave, namely, forming random laser. As for polymeric molecule, due to its strong phonon-electron interaction, the structure of polymeric molecule can be easily changed by photo-excitation, even induces carrier fission: One positive bipolaron can be split into two positive polarons, and one positive polaron can be split into one a negative polaron and the other a positive bipolaron—where this photo-induced carrier fission does not need the aid of an external electric field.

Doing some research during your stay at ISU is important and can be fun. The impact is tremendous, and is beyond what you can perceive now. In this talk, I will first present a few research topics. These topics include: Mechanic properties of diamondoids (Army Research Office supported), Diagnosis of heart beat (you will work with some local hospitals), superlens, High harmonic generations (excellent since this is very new), ultrafast dynamics in clusters, PHONON code, and ultrafast demagnetization in ferromagnets. Second I will present some information about summer research programs at DOE, DOD, Army Research Office, NIST and other National Laboratories. From these, you will see that in order to get chance there, it would be better that you could start some research projects here at ISU first.

One of the most surprising aspects of quantum mechanics is that under certain circumstances it does not allow individual physical systems, even when isolated,to possess properties in their own right. This feature, first clearly appreciated by John Bell in 1964, has in the last three decades been tested experimentally and found (in most people’s opinion) to be spectacularly confirmed. More recently it has been realized that it permits various operations which are classically impossible, such as “teleportation” and secure-in-principle cryptography. This talk is a very basic introduction to the subject, which requires only elementary quantum mechanics; it is primarily aimed at senior undergraduates or beginning graduate students.

Seth Ross and Dr. Guoping Zhang attended the American Physical Society Meeting on March 21-25, 2005. This meeting had over 6000 participants , with 40 parallel sessions at each time. There were also special activities devoted to the Year of Physics (2005) celebrating Einstein’s miracle discoveries in 1905. We will report on what we heard and experienced at the conference. Research areas are extremely broad, ranging from astronomy, materials science, chemistry, physics, biology and life sciences. We can only sample some of them: undergraduate research, physics teaching, funding, job opportunities, meetings for new faculty, student lunches with experts, nanoscience advancement, summer internships, ultrafast dynamics and optics, and much more.

http://www.tribstar.com/articles/2005/04/22/features/schools/schools01.txt

The journey begins on the campus of Indiana State Teachers College (now Indiana State University) in 1954 and culminates a quarter of a mile underneath the Atlantic Ocean with 150 men in a 36 foot diameter tube the length of a football field. Commander Robert L. Black graduated from Indiana State University in 1976 with a B.S. in Physics.

In 1975 he contemplated the question; so what do you do with a degree in Physics? The answer stretched him to the limit.

Understanding of electronic structure of materials has come a long way in the 80 years since 1924 when Prince Louis de Broglie deposited his thesis. From the start electrons have played a key role in the development of quantum theory, and within a few years quantum mechanics provided the underpinnings of present understanding of metals, insulators and semiconductors. Today the field is at a momentous stage, with new algorithms and computational methods, and rapid advances in basic theory[1]. The methods have become standard tools that are an essential part of modern research. It is possible to predict the properties complex systems, nanostructures, activity of large molecules in solution, and many other properties directly from the fundamental equations. There are also outstanding unsolved problems especially in the area of strongly-correlated electron problems. This talk will give an overview of current progress and examples of insights into important problems in physics, chemistry, and materials science.

Highly disordered metal-nonmetal alloys exhibit a metal-insulator transition as the temperature approaches absolute zero. I describe the results of experiments that explore the temperature and frequency behavior of the conductivity in one particular alloy system (niobium-silicon). In the vicinity of the transition, we find that the electrons behave quite differently from they way they do in conventional metals or insulators. Although we still lack a detailed microscopic model for the transition, a combination of the scaling theory of localization and the theory of quantum critical dynamics make a number of predictions, which are largely confirmed by our data.

In this presentation, I will first introduce the background of quantum
cryptography and its current status. I will then present our research in
producing a single photon source. I will discuss the advantage of the single
photon source over the traditional laser for the application in quantum
cryptography.

Electrodeposition is an ideal method for growing metal surfaces with fewer than three dimensions. Through manipulation of the experimental environment, deposition can be made nearly two-dimensional. In this presentation, I will provide a brief background of various types of electrodeposition research, discuss the research in electrodeposition being conducted here, present our results pertaining to the time-dependent current change, how that current change can be controlled, the chemical processes that are occurring in our cell, and discuss the composition of the deposition. Finally, I will conclude by briefly discussing the possible origin of the sharp current change.

Many extensions to the Standard Model predict the existence of new forces and extra dimensions which might produce deviations from Newton’s law of gravity at small separations. After reviewing the phenomenology used to characterize these effects, I will discuss the role of Casimir force experiments in searching for new physics at submicron separations, and present some results from new Casimir experiments by R. S. Decca at IUPUI.

When computing the current across a cavity due to electron emission at the faces, you must account for the electric potential generated by the electron cloud. This potential repels electrons trying to cross the gap and so limits the transmitted current. Vacuum tubes with a thermionically emitting cathode were principle electronic components before the advent of solid-state transistors. The diode characteristic for thermionic emitters was solved by Child & Langmuir in the 1920’s. The question of space-charged limited current also arises in SGEMP applications, where an electromagnetic pulse generates photo-Compton electrons. In this case, the energy spectrum of emitted electrons is not Maxwellian, and there is no general solution. I will discuss a method of determining the space-charge limited current for arbitrary emission spectra from both faces of a 1-D cavity.

In this informal talk, I will first discuss this year’s Nobel Prize in Physics, which was awarded to ABARIKOSOV, GINZBURG, and LEGGETT. Then, I will share some surprising news and breakthroughs in nanoscience around the world. In particular, I will discuss the International Symposium on Clusters and nanoassemblies (ISCANA): Physical and Biological Systems. This is a very broad meeting, which attracts biologists, bioinformatists, chemists, material scientists and physicists all over the world. About 20% participants are undergraduate and graduate students. Two Nobel Laureates in chemistry and physics gave the keynote speech. Finally, I will discuss some research opportunities for our students of different backgrounds here in Indiana State University.