Engineering Commons^™

Nanoscience For All: Strategies For Teaching Nanoscience To Undergraduate Freshmen Science And Non-Science Majors, Thomas Tretter, M. Jones, Michael Falvo

Thomas Tretter

Rethinking Classroom Participation, Rita Gardiner

Rita A Gardiner

Within the classroom, feelings of alienation can adversely affect students’ ability to speak, and thus serve to reproduce social inequities. This is especially the case with some first year students who may not have had many opportunities to speak, as well as students from different cultures where talking in class may not be the norm. To help mitigate power imbalances, it is necessary to develop a diversity of teaching practices and approaches to learning to ensure that each student feels that her class participation counts. In this workshop, I want to consider ways in which it is possible to encourage …

Measurements Of Nh3 Linestrengths And Collisional Broadening Coefficients In N2, O2, Co2, And H2o Near 1103.46 Cm−1, Kyle Owen, Et-Touhami Es-Sebbar, Aamir Farooq

Dr. Et-touhami Es-sebbar

Laser-based ammonia gas sensors have useful applications in many fields including combustion, atmospheric monitoring, and medical diagnostics. Calibration-free trace gas sensors require the spectroscopic parameters including linestrengths and collisional broadening coefficients to be known. Ammonia's strong ν2 vibrational band between View the MathML source has the high absorption strength needed for sensing small concentrations. Within this band, the 1103.46 cm−1 feature is one of the strongest and has minimal interference from CO2 and H2O. However, the six rotational transitions that make up this feature have not been studied previously with absorption spectroscopy due to their small line spacing ranging from …

The Effective Use Of Research Tools And Resources, Nader Ale Ebrahim

Nader Ale Ebrahim

This presentation is prepared to help scholars who seek to reduce the search time by extending the knowledge of researchers to more effectively use the “Research Tools" that are available through the Net.

Effects Of N2o And O2 Addition To Nitrogen Townsend Dielectric Barrier Discharges At Atmospheric Pressure On The Absolute Ground-State Atomic Nitrogen Density, Et. Es-Sebbar, N. Gherardi, F. Massines

Dr. Et-touhami Es-sebbar

Absolute ground-state density of nitrogen atoms N (2p3 4S3/2) in non-equilibrium Townsend dielectric barrier discharges (TDBDs) at atmospheric pressure sustained in N2/N2O and N2/O2 gas mixtures has been measured using Two-photon absorption laser-induced fluorescence (TALIF) spectroscopy. The quantitative measurements have been obtained by TALIF calibration using krypton as a reference gas. We previously reported that the maximum of N (2p3 4S3/2) atom density is around 3 × 1014 cm−3 in pure nitrogen TDBD, and that this maximum depends strongly on the mean energy dissipated in the gas. In the two gas mixtures studied here, results show that the absolute N …

Exploring The Factors That Motivate Female Students To Enroll And Persist In A Collegiate Stem Degree Program, Rosemary L. Edzie, Moe Alahmad

Rosemary L Edzie

In the United States, collegiate enrollment in science and engineering programs continues to decline, while European and Asian universities have increased the number of science and engineering graduates. In addition, there is a growing concern over too few females enrolling and persisting in collegiate science, technology, engineering, and mathematics (STEM) degree programs. Through increasing access to pre-collegiate STEM activities, providing a better understanding of STEM career choices, instilling of confidence in math and science, and establishing student and industry based mentoring programs, more female students will enroll and persist in collegiate STEM degree programs. This paper sets to explore the …

Temperature-Dependent Absorption Cross-Section Measurements Of 1-Butene (1-C4h8) In Vuv And Ir, Et-Touhami Es-Sebbar, Yves Benilan, Aamir Farooq

Dr. Et-touhami Es-sebbar

Vacuum ultraviolet (VUV) and infrared (IR) absorption cross-section measurements of 1-butene (1-C4H8; CH2=CHCH2CH3; Butylene) are reported over the temperature range of 296–529 K. The VUV measurements are performed between 115 and 205 nm using synchrotron radiation as a tunable VUV light source. Fourier Transform Infrared (FTIR) spectroscopy is employed to measure absorption cross-section and band strengths in the IR region between 1.54 and 25 μm (∼6500–400 cm−1). The measured room-temperature VUV and IR absorption cross-sections are compared with available literature data and are found to be in good agreement. The oscillator strength for the electronic transition (A1A′→X1A′) around 150–205 nm …