The UPASS Referendum vote is split in to two questions. For more information, click here: http://gsa.usask.ca/services/upass/upass-referendum-2014.php
This event will likely be rescheduled at a later date.
What: Town Hall Chili Lunch
When: February 27, 2014 – Noon
Where: PHYS 175
Please come to join PEGASUS for a chili lunch and a chance to hear about some of the current initiatives of your student representative group, PEGASUS. This is your chance to raise any questions you may have, as well as to get more information about the UPASS referendum.
Chili, buns, veggies, and fruit will be served. Vegetarian chili will be available, as well as gluten-free buns (upon early request)
We urge you to RSVP (firstname.lastname@example.org) by Monday, February 24, to allow for us to arrange for the appropriate amount of food.
All physics grad students are welcome to attend — please forward this to anyone who we may have missed.
The 2nd Annual GSA Awards Gala will be on Saturday 8 March, 2014. Cocktails will start at 5:30pm, followed by Dinner at 6:30pm, and a Dance at 11:00pm.
Tickets for students may be purchased in the GSA Commons between the hours of 1:00pm and 7:00pm (Monday to Friday).
Read the original post here: http://gsa.usask.ca/news/2nd-annual-graduate-awards-gala.php
SPEAKER: Sarah Purdy, PhD Candidate
TOPIC: Material characterization light emitting diodes fabricated using carbon ion implanted silicon
DATE: Thursday, March 27, 2014
PLACE: Rm. 103, Physics Building
ABSTRACT: The Bradley lab uses ion implantation as a processing method for modifying silicon to be used in silicon-based Light-Emitting Diodes (LEDs). Ion implantation can be used to modify both the elemental composition as well as the structure of the ion-implanted layer. The process is maskable and fully compatible with other standard chip-making processes. Silicon carbide (SiC) is a known high-bandgap semiconductor which was used to make early (c. 1970s) low-efficiency blue-light LEDs. This study explored the implantation of carbon into silicon to form sub-surface silicon carbide nanocrystallites as a route to fabricate silicon-compatible LEDs which could be integrated with other devices on a silicon chip. The ion implantation process was carried out at the Centre for Emerging Device Technologies at McMaster University using a refurbished Wyckham ion beam source. The carbon ions were implanted into single-crystal (<100> orientation), boron-doped silicon (resistivity ~ 10 Ω.cm) at 20 keV energy and fluences of 3,5,7,10 x1016 C+ ions/cm2 (resulting in concentrations of 8-26 atom % C:Si in the implanted layer). The implanted wafers were then annealed at 1000 °C in flowing nitrogen for 1 h. Fourier Transform Infrared (FTIR) spectroscopy, X-ray Diffraction (XRD), Electron Energy Loss Spectroscopy (EELS), and Transmission Electron Microscopy (TEM) were used to analyze the chemical and physical structure of the C-implanted modified silicon layer. The implantation and annealing process resulted in nanoscale SiC inclusions embedded in a polycrystalline, or amorphous layer of silicon near the surface of the Si wafers. Schottky diodes were fabricated from the modified silicon, and observed to have turn-on voltage ~2 V. The light emission from these devices was orange-red in colour, indicating emission from damaged silicon; strong emission from SiC was not observed. The light from these diodes was easily visible to the naked eye, unusual for silicon-based light emission.
The implantation of carbon ions into silicon, with post-implant annealing, resulted in bright light-emitting diodes as a proof-of-concept for efficient, silicon-based photonic emitters compatible with existing processing technologies.
When: 5:30 pm March 28th
Where: Exeter Room at Marquis Hall
Tickets are now for sale ($25 for students, $35 for non-students). Tickets are available during office hours from the Physics Department main office, or from any PSS executive member (just come by the physics lounge and ask!).
When: April 9, 2014, 4:30pm
Where: PHYS 175
Please join PEGASUS for its annual town hall. We will be reviewing the past year’s activities and invite you to bring forth your comments, complaints, questions and suggestions. Refreshments and wine will be available.
When: April 10, 2014, Noon
Where: GSA Commons
The GSA welcomes you to meet the candidates for the upcoming 2014-2015 executive. This is your chance to find out more about each candidate and ask questions about their plans for the GSA. Following the Meet the Candidates event, voting for the GSA executive will be on April 11 from 9am-4pm.
GSA elections voting period is open on April 11th from 9:00am until 4:00pm. Make sure you vote! Voting is performed using PAWS.
See the GSA website for more details, specifically: http://gsa.usask.ca/governance/elections.php
When: April 14, 8pm – April 15, early morning
Where: Physics Lounge
Want to see a lunar eclipse!? We’ll be gathering in the physics lounge for an evening of games, refreshments and bad astronomy jokes, then watching the lunar eclipse starting around midnight.
Also, Mars is at closest approach to the Earth the same night! There might even be a telescope available to view our rusted neighbour.
PEGASUS is pleased to invite you to an upcoming event featuring alumni of our very own Physics & Engineering Physics Department!
We have four P&EP Alumni who have pursued careers outside of the “traditional” academic path, and are excited to share their experiences with you and answer any questions you might have. Come to listen to their stories, and ask any questions you may have about your job prospects after your degree! We have both BSc and MSc holders of the USask P&EP Department represented.
Pizza and drinks provided.