Publications by Type: Journal Article

J. K. Bean, Bilotto, A., and Hildebrandt Ruiz, L., “Formation of Particulate Matter from the Oxidation of Evaporated Hydraulic Fracturing Wastewater,” Environmental Science & Technology, Submitted.
T. Bui-Thanh, “From Rankine-Hugoniot Condition to a Constructive Derivation of HDG Methods,” Lecture Notes in Computational Science and Engineering, Submitted.
C. Faxon, Dhulipala, S. V., Allen, D. T., and Hildebrandt Ruiz, L., “Heterogeneous Production of Cl2 from Particulate Chloride Measured in Environmental Chamber Experiments,” American Institute of Chemical Engineers Journal, Submitted.
A. I. Z. Jarrah, Bard, J. F., and deSilva, A. H., “A Heuristic for Machine Scheduling at General Mail Facilities (1992),” European Journal of Operational Research, vol. 63, Submitted.
T. Bui-Thanh, “Hybridized Discontinuous Galerkin Methods for Linearized Shallow Water Equations,” Submitted.
R. E. F. E. R. E. E. D. J. O. U. R. N. A. L. A. R. T. I. C. L. E. S. Boden, D., M. N., D., L., and Borrego, M., “(in press),” Leave your discipline at the door: {Matching} expectations for interdisciplinary collaboration among faculty members. {Higher} {Education} in {Review}, vol. 11., Submitted.
M. Alley, Schreiber, M., Diesel, E., Ramsdell, K., and Borrego, M., “

(2007) Increased student learning and attendance in resources geology through the combination of sentence-headline slides and active learning measures.

,” Journal of Geoscience Education, vol. 55, pp. 85–91, Submitted.
T. Bui-Thanh and Myers, A., “A Randomized Misfit Approach for Data Reduction in Large-Scale Inverse Problems,” SIAM Special Edition, Submitted.
Y. Deng and Bard, J. F., “A Reactive GRASP with Path Relinking for Capacitated Clustering,” Journal of Heuristics, vol. 17, pp. 119–152, Submitted.
A. I. Z. Jarrah, Bard, J. F., and deSilva, A. H., “Solving Large-Scale Tour Scheduling Problems (1994),” Management Science, vol. 40, pp. 1124–1144, Submitted.
J. F. Bard, Binici, C., and deSilva, A. H., “Staff Scheduling at the United States Postal Service. ,” Computers & Operations Research, vol. 30, pp. 745–771, Submitted.
In Press
H. Daigle and Dugan, B., “Data report: permeability, consolidation, stress state, and pore system characteristics of sediments from Sites C0011, C0012, and C0018 of the Nankai accretionary complex,” Proceedings of the Integrated Ocean Drilling Program, Scientific Reports, In Press.
In Press, 2018
V. Puzyrev, Calo, V., and Torres-Verdin, C., “Interpretation of deep directional resistivity measurements acquired in high-angle and horizontal wells using 3D inversion,” Geophysical Journal International, In Press, 2018.
J. D. Escobar and Torres-Verdin, C., “Permeability sensitivity functions and rapid simulation of hydraulic testing measurements using perturbation theory,” Water Resources Research, In Press, 2018.
J. Selvakumar and Bakolas, E., “Robust Time-Optimal Guidance in a Partially Uncertain Time-Varying Flow-Field,” Journal of Optimization Theory and Applications, In Press, 2018.
K. Chen, Roy, A., Rai, A., Movva, H. C. P., Meng, X., He, F., Banerjee, S. K., and Wang, Y., “Accelerated carrier recombination by grain boundary/edge defects in MBE grown transition metal dichalcogenides,” APL Materials, vol. 6, pp. 056103, 2018. Publisher's VersionAbstract
Defect-carrier interaction in transition metal dichalcogenides (TMDs) plays important roles in carrier relaxation dynamics and carrier transport, which determines the per- formance of electronic devices. With femtosecond laser time-resolved spectroscopy, we investigated the effect of grain boundary/edge defects on the ultrafast dynamics of photoexcited carrier in molecular beam epitaxy (MBE)-grown MoTe2 and MoSe2. We found that, comparing with exfoliated samples, the carrier recombination rate in MBE- grown samples accelerates by about 50 times. We attribute this striking difference to the existence of abundant grain boundary/edge defects in MBE-grown samples, which can serve as effective recombination centers for the photoexcited carriers. We also observed coherent acoustic phonons in both exfoliated and MBE-grown MoTe2, indi- cating strong electron-phonon coupling in this materials. Our measured sound velocity agrees well with the previously reported result of theoretical calculation. Our findings provide a useful reference for the fundamental parameters: carrier lifetime and sound velocity and reveal the undiscovered carrier recombination effect of grain boundary/edge defects, both of which will facilitate the defect engineering in TMD materials for high speed opto-electronics.
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C. Lu, Jing, Z., Wu, C., Piquemal, J. - P., Ponder, J. W., Ren, P., and others,AMOEBA Polarizable Atomic Multipole Force Field for Nucleic Acids,” J Chem Theory Comp, vol. in press, 2018. Publisher's Version
X. Meng, Zhou, Y., Chen, K., Roberts, R. H., Wu, W., Lin, J. ‐F., Chen, R. T., Xu, X., and Wang, Y., “Anisotropic Saturable and Excited-State Absorption in Bulk ReS2,” Advanced Optical Materials, 2018. Publisher's VersionAbstract
The intensity‐scan (I‐scan) technique to study the polarization‐dependent, nonlinear processes in exfoliated bulk ReS2 is utilized. The polarization‐dependent reflection and transmission of ReS2, from which the absorption coefficients are extracted using the transfer matrix method, are measured. Absorption coefficients under high laser peak power show a transition from saturable absorption (SA) to reverse saturable absorption when rotating the laser polarization with respect to the b‐axis. It is found that SA and excited‐state absorption (ESA) contribute to the nonlinear optical processes. Both the SA and ESA show strong dependence on the polarization angle, which is attributed to the anisotropic optical transition probability and electronic band structure in ReS2. The anisotropic nonlinear optical properties of ReS2 may find applications as saturable absorbers in lasers and optical modulators.
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J. Dueñas, Sulzer, J., Stämpfli, P., Hepp-Reymond, M. - C., Kollias, S., Seifritz, E., and Gassert, R., “BOLD signal in sensorimotor regions reveals differential encoding of passive forefinger velocity and displacement amplitude,” NeuroImage, vol. 173, pp. 332-340, 2018.
K. Chen, Roy, A., Rai, A., Valsaraj, A., Meng, X., He, F., Xu, X., Register, L. F., Banerjee, S., and Wang, Y., “Carrier Trapping by Oxygen Impurities in Molybdenum Diselenide,” ACS Applied Materials & Interfaces, vol. 10, no. 1, pp. 1125–1131, 2018. Publisher's VersionAbstract
Understanding defect effect on carrier dynamics is essential for both fundamental physics and potential applications of transition metal dichalcogenides (TMDs). Here, the phenomenon of oxygen impurities trapping photoexcited carriers has been studied with ultrafast pump-probe spectroscopy. Oxygen impurities are intentionally created in exfoliated multilayer MoSe2 with Ar+plasma irradiation and air exposure. After plasma treatment, the signal of transient absorption first increases and then decreases, which is a signature of defect-capturing carriers. With larger density of oxygen defects, the trapping effect becomes more prominent. The trapping defect densities are estimated from the transient absorption signal, and its increasing trend in the longer-irradiated sample agrees with the results from X-ray photoelectron spectroscopy. First-principle calculations with density functional theory reveal that oxygen atoms occupying Mo vacancies create mid-gap defect states, which are responsible for carrier trapping. Our findings shed light on the important role of oxygen defects as carrier trappers in TMDs, and facilitate defect engineering in relevant materials and device applications.
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