Welcome to my personsal homepage!
به وبسایت شخصی روح الله توکلی خوش آمدید
persian version
Teaching Current research Recent publications & Preprints Links
Rouhollah Tavakoli (PhD MSE Sept. 2009)
Associate Professor
Department of Materials Science and Engineering
Sharif University of Technology
P.O. Box: 11365-9466
P.C. : 1458889694
Tel: +98 21 6616 5209
Fax: +98 21 6600 5717
Email: rtavakoli at sharif.ir
gmail id: rtav20 at gmail.com
Courses taught at SUT (link): Advanced solidifcation (g), Theory of solidification (g), Advanced phase transformation and diffusion (g), Computational materials science (g), Simulation of solidification and casting processes (g), Ingot casting (g), Crystallography & X-ray diffraction (ug), Numerical simulation in MSE (ug), Numerical Methods (ug), Principles of solidification and casting (ug), Solidification and casting Lab (ug).
Current research:
- Machine learning
- Metal additive manufacturing
- Phase-field modeling of solidification.
- Optimal process design, optimal product design (topology optimization)
Recent publications (2014 -- Present):
- A. Pourfathi, R.
Tavakoli, Thermal optimization of secondary cooling systems in the
continuous steel casting process, International Journal of Thermal
Sciences 183, 107860, 2022.
- S.M. Elahi, R.
Tavakoli,
A.K. Boukellal, T. Isensee, I. Romero, D. Tourret, Multiscale
simulation of powder-bed fusion processing of metallic alloys,
Computational Materials Science 209, 2022.
- M. Abbasi, S. Shabestari, R. Tavakoli,
On the glass-forming ability of (Zr0. 5Cu0. 5) 100− xAlx ternary
alloys: A molecular dynamics study, Materials Today Communications 31,
103474, 2022.
- R. Tavakoli,
Minimum weight topology optimization subject to unsteady heat equation
and space-time pointwise constraints—toward automatic optimal riser
design in the shape casting process, Structural and
Multidisciplinary Optimizatio, 64 (3), 1629-1647, 2021.
- M. Tavakoli, H. Dastjerdi, P. Yadav, D. Prochowicz, H. Si,
R. Tavakoli,
Ambient Stable and Efficient Monolithic Tandem Perovskite/PbS Quantum
Dots Solar Cells via Surface Passivation and Light Management
Strategies, Advanced Functional Materials, 31, 2010623, 2021.
- M. Khanouki, R.
Tavakoli,
H. Aashuri, Temperature dependence of serrated flow, strain-rate
sensitivity and activation volume in a Ti-based bulk metallic glass, Journal
of Non-Crystalline Solids 553, 120497, 2021.
- M. Tavakoli, R.
Tavakoli, All‐Vacuum‐Processing for Fabrication of Efficient,
Large‐Scale, and Flexible Inverted Perovskite Solar Cells, physica status solidi (RRL)–Rapid Research Letters 15
(1), 2000449.
- M. Tavakoli, P. Yadav, D. Prochowicz, R. Tavakoli, Efficient,
Hysteresis‐Free, and Flexible Inverted Perovskite Solar Cells Using
All‐Vacuum Processing, Solar RRL 5 (1), 2000552.
- A. Yari, R. Tavakoli, Optimum design of sprue well using computer simulation and experimental study, Founding Research Journal. 4 (119-126) 2020.
- A. Foroughi, R. Tavakoli, Topological and chemical short-range order and their correlation with glass form ability of Mg-Zn metallic glasses: A molecular dynamics study Computational Materials Science, Comput Mater Sci 180 (109709) 2020.
- M. Ghaemi, R. Tavakoli, Universal Correlation between the Thermodynamic Potentials and Some Physical Quantities of Metallic Glasses as a Function of Cooling Rate during Molecular Dynamics Simulation, J Non-Cryst Solids 536, 119999 (1-7) 2020.
- E. Dastbaz, R. Tavakoli, Numerical simulation of solidification microstructure in selective laser melting additive manufacturing and studying the effect of process parameters on grains morphologies, Founding Research Journal 3 (229-236) 2020.
- M. Tavakoli, H. Si, P. Yadav, D. Prochowicz, R. Tavakoli, A Dopant‐Free Hole Transporting Layer for Efficient and Stable Planar Perovskite Solar Cells, Physica Status Solidi RRL (2000147) 2020.
- M.M. Tavakoli, D. Prochowicz, P. Yadav, R. Tavakoli,
Efficient Perovskite Solar Cells Based on CdSe/ZnS Quantum Dots
Electron Transporting Layer with Superior UV Stability, Physica
Status Solidi RRL (2000062) 2020.
- J. Zhao, R. Tavakoli, M. Tavakoli, Synergistic Interface and Compositional Engineering of Inverted Perovskite Solar Cells Enable Highly Efficient and Stable Photovoltaic Device, Chemical Communications 55 (9196-9199) 2019.
- H. Dastjerdi, R. Tavakoli, P. Yadav, D. Prochowicz, M. Saliba, M. Tavakoli, Oxygen Plasma-Induced p-type Doping Improves Performance and Stability of PbS Quantum Dot Solar Cells, ACS Applied Materials & Interfaces 11 (26047-26052) 2019.
- M. Tavakoli, H. Dastjerdi, D. Prochowicz, P. Yadav, R. Tavakoli, M. Saliba, Z. Fan, Highly Efficient and Stable Inverted Perovskite Solar Cells Using Down-Shifting Quantum Dots as a Light Management Layer and Moisture-Assisted Film Growth, J Mater Chem A, accepted 2019.
- F. Bodaghi, M. Movahedi, A.H. Kokabi, R Tavakoli, Effect of solid fraction, grain misorientation and grain boundary energy on solidification cracking in weld of Al-Cu aluminum alloys, Materials Research Express 6 (086598) 2019.
- M. Tavakoli, R. Tavakoli, P Yadav, J Kong, A graphene/ZnO electron transfer layer together with perovskite passivation enables highly efficient and stable perovskite solar cells, J Mater Chem A 7 (679-686) 2019.
- M.T. Asadi, R.
Tavakoli, H. Aashouri, Serrated flow during
inhomogeneous bending deformation of bulk metallic glasses: from
self-organized critical to chaotic dynamics, J Non-Cryst
Solids 505 (62--71) 2019.
- M.M. Tavakoli, P. Yadav, D. Prochowicz, R. Tavakoli, M. Saliba,
Multilayer
Evaporation of MAFAPbI3-xClx for the Fabrication of Efficient and
Large-Scale Device Perovskite Solar Cells, J Phys D, accepted 2019, invited paper.
- M.T. Asadi, R.
Tavakoli, H. Aashouri, On the origin
of intermediate temperature brittleness in La-based bulk metallic
glasses Journal of Alloys and Compounds, J
Alloy Compd, 770 (535--539)
2019.
- M. Ghaemi, R. Tavakoli, A. Foroughi, Comparing short–range and medium–range ordering in Cu--Zr and Ni--Zr metallic glasses -- Correlation between structure and glass form ability, J Non-Cryst Solids 499 (227--236) 2018.
- S. Safaei, R. Tavakoli, M. J. Zadeh, Moelcular Dynamics Study of Two Dimensional Silicon Dioxides with In Plane Negative Poisson's Ratio, Comput Mater Sci 153 (258--267) 2018.
- M. Tavakoli, P Yadav , R. Tavakoli, J Kong, Surface Engineering of TiO 2 ETL for Highly Efficient and Hysteresis-Less Planar Perovskite Solar Cell (21.4%) with Enhanced Open Circuit Voltage and Stability, Advanced Energy Materials, 8 (1800794) 2018.
- S. Mohammadyari, R. Tavakoli, Production and Characterization of SAC-XAl lead free nanocomposite solder via melt-spinning technique, Founding Research Journal 1 (171-180) 2018.
- M.T. Asadi, R. Tavakoli, H. Aashuri, Effect of temperature on the fracture surface morphology of Ti- and Zr-based bulk metallic glasses - exploring correlation between morphology and plasticity, J Mater Sci 53 (10372--10382) 2018.
- M. Jafary-zadeh, Z. Aiken, R. Tavakoli, Y. Zhang, On the controllability of phase formation in rapid solidification of high entropy alloys, J Alloy Compd 748 (679--686) 2018.
- A. Foroughi, R. Tavakoli, H. Aashuri, Medium range order evolution in pressurized sub-Tg annealing of Cu64Zr36 metallic glass, J Non-Cryst Solids 481 (132--137) 2018.
- R. Tavakoli, Thermal optimization of the continuous casting process using distributed parameter identification approach—controlling the curvature of solid-liquid interface, Int. J. Adv. Manufacturing Tech 94 (1101--1118) 2018.
- A. Foroughi, H. Aashuri, R.
Tavakoli, M. Stoica, D. Sopu, J. Eckert, Structural modification
through pressurized sub-Tg annealing of metallic glasses, J. Appl.
Phys. 122, 2017.
- M.T.
Asadi, R. Tavakoli,
H. Aashuri, Effect of the strain rate on the
intermediate temperature brittleness in Zr-based bulk metallic glasses,
J Non-Cryst Solids 475 (172-178) 2017.
- S. Safaei, R. Tavakoli, On The Design of Graphene Oxide Nanosheets Membranes for Water Desalination, Desalination 422 (83--90) 2017.
- M. Tavakoli, A. Waleed, L. Gu, D. Zhang, R. Tavakoli, Non-Catalytic
Vapor Growth Regime for
Organohalide Peroskvite Nanowire Using Anodic Aluminum Oxide Templates,
Nanoscale
18 (5828--5834) 2017.
- M. Tavakoli, A. Simchi, R. Tavakoli, Z. Fan,
Organic Halides and
Nanocone Plastic Structures Enhance the Energy Conversion Efficiency
and Self-Cleaning Ability of Colloidal Quantum Dot Photovoltaic
Devices, J. Phys. Chem. C 121 (9757–9765) 2017.
- M. Jafary-Zadeh, R. Tavakoli, J. Koh, Z. Aitken, Y. Zhang, Effect of chemical composition and affinity on the short- and medium-range order structures and mechanical properties of Zr-Ni-Al metallic glass, J Non-Cryst Solids 456 (68--75) 2017.
- R. Tavakoli, Smooth Modeling of Solidification Based on the Latent Heat Evolution Approach, Int. J. Adv. Manufacturing Tech 88 (2017), 3041–3052.
- G.P. Kumar, M. Jafary-Zadeh, R. Tavakoli, F. Cui, Feasibility of using bulk metallic glass for self-expandable stent applications, Journal of Biomedical Materials Research: Part B - Applied Biomaterials 105 (2017) 1874–-1882.
- M.
Jafary-Zadeh, R. Tavakoli,
D.J. Srolovitz, Y. Zhang, Thermally
induced failure mechanism transition and its correlation with
short-range order evolution in metallic glasses, Extreme
Mechanics Letters 9 (215--225) 2016.
- R. Tavakoli, Optimal design of multiphase composites under elastodynamic loading, Comput Meth Appl Mech Eng, 300 (265--293) 2016.
- R. Tavakoli, Unconditionally energy stable time stepping scheme for Cahn-Morral equation: application to multi-component spinodal decomposition and optimal space tiling, J Comput Phys 304 (441--464) 2016.
- R. Tavakoli, On the coupled continuous knapsack problems: projection onto the volume constrained Gibbs N-simplex, Optimization Letters 10 (137--158) 2016.
- M. Tavakoli, R, Tavakoli, A. Waleed, U. Virk, Z. Fan, High efficiency and stable perovskite solar cell using ZnO/rGO QDs as an electron transfer layer, Adv Mater Int 3 (1500790) 2016.
- M. Tavakoli, R,
Tavakoli, S. Hasanzadeh, M. Mirfasih,
Interface Engineering of Perovskite Solar Cell Using a Reduced-Graphene
Scaffold, J. Phys. Chem. C 120 (19531–19536) 2016.
- A. Foroughi, R. Tavakoli, H. Aashuri,
Molecular Dynamics
Study of local structure evolution in Cu50-Zr50 Bulk Metallic Glass, J
Non-Cryst Solids 432 (334--341) 2016.
- S.Z.
Homayounfar, R. Tavakoli,
R. Bagheri, Energy management through
topology optimization of composites microstructure using projected
gradient method, Struct Multidisc Optim 52 (1121--1133) 2015.
- R.
Tavakoli, Computationally efficient approach for the
minimization of
volume constrained vector-valued Ginzburg-Landau energy functional, J
Comput Phys 295 (355–-378) 2015.
- R. Tavakoli, On the prediction of shrinkage defects by thermal criteria functions, Int. J. Adv. Manufacturing Tech 74 (569--579) 2014.
- R. Tavakoli, Multimaterial topology optimization by volume constrained Allen-Cahn system and regularized projected steepest descent method, Comput Meth Appl Mech Eng 276 (534--565) 2014.
- M. Tavakoli, R. Tavakoli, P. Davami, H. Aashuri, A quantitative approach to study solid state phase coarsening in solder alloys using combined phase-field modeling and experimental observation, J Comput Electron 13 (425--431) 2014.
- R.
Tavakoli, S.M. Mohsenie, Alternating active-phase
algorithm for multimaterial topology optimization problems: a 115-line
MATLAB implementation, Struct Multidisc Optim 49 (621--642) 2014.
Former publications (2006--2014)
Links:
- XePersian (a Latex
package to do persian and
bidirectional typesetting in Latex)
- PSTricks,
TikZ,
GnuPlot, Paraview (useful free plotting
tools)