MONDAY MEMO, June 11, 2007 **************** 1. Announcements **************** 1.1: Shut down of West Lab Wing for PM: We are planning to complete a needed six-month preventative maintenance of the west lab wing chemical exhaust and air makeup systems for ~3.5 hours, if not issues arise. The shut down of the west lab wing chemical exhaust and makeup air units are scheduled for June 12 starting at 5:30AM, to be completed by 9:00AM. Shutting these systems down will increase the temperature in all the west labs. Therefore, temperature sensitive equipment will need to be idled. Since west lab wing chemical exhaust system will be down, all chemicals will need to be removed from the fume hoods by 4:00PM on June 11. All process tools using chemical exhaust will be shut down during the PM time as well. Please contact MARK VOORHIS should you have any questions or concerns (43036; mvoorhis@purdue.edu). 1.2: HCI spill repair We are in the final stages of repairing the damage from an HCl spill from last year. We have to shut down all electrical power for process equipment in cleanroom areas PP, P, PR, R, RS, S, SA, A for 4 days. Chemicals and processes will have to be removed or secured prior to the shut down. This is scheduled for June 18 @ 8:00 A.M. till June 21 @ 4:00 P.M. All processes in these areas will be shut down during this time. ******************** 2. Seminars ******************** 2.1: Tuesday, June 12, 2007, 3:00pm: “Some Remarks to Electrodynamics of Materials with Negative Refraction,” by Dr. Victor Georievich Veselago, BRK 1001 ABSTRACT: The negative refraction coefficient n < 0 can be introduced for isotropic materials with anti-parallel directions of phase and group velocities. If some of material can be described by negative n it will have also negative values of both (electrical e and magnetic m) permeabilities. In materials with negative refraction coefficient, the realization of many physical laws is unusual. For example, in the case n < 0, the refracted beam in Snellius law is situated symmetrically with one for the case of positive n. Some other examples will be discussed among which is the very interesting flat lens, which can be used in so called “optical tweezers.” The discovery of negative refraction materials poses a very important question — to what extent are all the laws and formulas of electrodynamics, optics and related technical sciences valid, when n is negative? Can we always simply change the sign n ® - n as, for example, in Snellius law? Generally speaking, the answer to this question is negative. Many laws and equations of electrodynamics and optics correspond to the case of non-magnetic materials with permeability m = 1. This non-magnetic approach leads to many formulas that drastically change for the case m¹ 1, especially for m < 0. For example, if one substitutes negative n into Fresnel equations, the results will be wrong. A special table, which outlines the situation, will be given in the talk. In the talk, some examples of negative refraction materials will be discussed and their properties and possible applications. The negative refraction phenomena can be observed not only in materials with negative value of n, e and m, but in many substances, which cannot be described by these values. So, this sort of refraction presents in anysotropic crystals. These materials are described by tensor, not scalar values of n, e and m. The other, very important example of negative-refraction materials are called photonic crystals. The main difference between photonic crystals and materials with negative n, e and m, is the relation between wavelength l and lattice constant a in materials with negative refraction coefficient l > a, but in photonic crystals a ³ l. So, materials with negative refraction coefficient can be described on the base of harmonic oscillation equation, but photonic crystals — on the base of Blokh, or Mattiew equations. The phenomenology of this two sort of materials is in many cases similar, but physics background is different. This talk will include a discussion of the problem of estimation of pressure of light in LHM materials. BIO: Victor Georgievich Veselago graduated from Moscow University in 1952, and was with P.N. Lebedev Physical Institute, Moscow, from 1952 to 1983.
From 1983 up to now, he is the head of laboratory of magnetic materials in A.M. Prokhorov Institute of General Physics. He received his PhD degree in 1959, for radiospectropy investigation of molecular spectra, and degree Doctor of Science (solid state physics) in 1974 for investigation of solid state in high magnetic fields, both in P.N. Lebedev Institute. From 1980 until now, is a professor of Applied physics in Moscow Institute of Physics and Technology. The area of scientific interest of V.G. Veselago is magnetism, solid-state physics, electro-dynamics. In his papers, published in 1966-1972 was at the first time considered electrodynamics of material with negative value of refraction index (so called Left-Handed Materials, LHM). V.G. Veselago is a winner of State Prize for science of USSR (1976), and a winner of academician V.A. Fock prize (2004). He is also an Honored Scientist of Russian Federation (2002). He is an active expert in Russian Foundation for Fundamental Research, Russian Foundation for Humanitarian Research, and is vice-chairman of physics section of Supreme Attestation Committee of Russia (VAK). He is a founder and vice-editor of the electronic, scientific journal “Investigated in Russia” http://zhurnal.ape.relarn.ru. He is married and has three daughters and one son. His favorite animal is lady-cat, Fifa. His hobby is of railways (real, not models).
******************** 3. Funding Opportunities ******************** “Nanotechnology Research Grants Investigating Fate, Transport, Transformation, and Exposure of Engineered Nanomaterials: A Joint Research Solicitation,” on behalf of Christine King Below is the URL for a Request for Proposals that may be of interest to you. Contact Christine King for assistance in responding to this RFP. “Nanotechnology Research Grants Investigating Fate, Transport, Transformation, and Exposure of Engineered Nanomaterials: A Joint Research Solicitation”: <http://es.epa.gov/ncer/rfa/2007/2007_star_nanotech.html <http://es.epa.gov/ncer/rfa/2007/2007_star_nanotech.html> > Synopsis of Program: The U.S. Environmental Protection Agency (EPA), Office of Research and Development (ORD) as part of its Science to Achieve Results (STAR) program; the National Science Foundation (NSF); and the U.S. Department of Energy (DOE), Office of Science are seeking proposals for research dealing with the potential implications of nanotechnology and engineered nanomaterials on human health and the environment. In an effort to stimulate international research in the area of engineered nanomaterials, U.S. researchers are encouraged to collaborate with European researchers. Research areas include: the fate, transport and transformation of nanomaterials; and bioavailability and exposure of humans and other species to nanomaterials. ************************************** 4. Birck Living ************************************** 4.1: Restrooms, everyone needs ‘em There have been concerns expressed from students, faculty, staff, and janitorial services regarding the condition of the restrooms. The janitorial staff is working hard to try to keep them in a neat, clean, sanitary condition, but the cooperation of all the residents of the building is needed. Please flush the toilets and urinals. If you splash water on the counters — this should be an exception since the sinks are very deep — please wipe it up with a paper towel. Finally, please don’t leave trash on the restroom floors and counters. The bottom line: please show consideration for your fellow Birck residents by leaving the restrooms in AT LEAST as good of condition as when you entered. 4.2: “Serving the Birck Community,” by Ira Young To better serve the entire community of Birck. Please observe the following schedule for supplies. LAB AND CLEANROOM SUPPLIES Supplies will be delivered on Monday, Wednesday, and Friday. 1. Please send me an e-mail for the supplies you will need at icyoung@purdue.edu or through the BNC-engstaff@ecn.purdue.edu. Please include Lab Room Number, do not give me a Lab Name this will only slow up the delivery. 2. The cleanroom will be stocked beginning at 9:00 A.M. 3. The Labs will be stocked beginning at 1:00 P.M. 4. Please get your request in as early as possible for delivery. 5. E-mails, received after 8:30 A.M. for cleanroom and 12:30 P.M. for Labs will be delivered on the next delivery day. SUPPLIES REQUIRING ACCOUNT NUMBER 1. E-mails requesting non-standard supplies (items not covered by the BNC User Fees) must include an account number. I will notify you if materials cannot be delivered without a BRK account number. 2. We will setup a time agreeable to both of us to come and get the requested materials. RECEIVING CHEMICAL ORDERS 1. I will receive the material. 2. I will put a copy of the receipt in your mailbox. 3. I will e-mail you advising that the chemical has arrived and ask where you would like it placed (please use lab number not lab name). 4. Upon receipt of returned e-mail I will check for an MSDS. If I cannot find an MSDS I will request one from you. 5. I will deliver the material where requested. 6. I will send you an e-mail advising that the chemical has been delivered. Thank you, for observing the above schedules. We hope that this will help maintain rapid distribution of chemical supplies while standardizing chemical deliveries throughout the facility.