Minary-Jolandan, Majid
Permanent URI for this collectionhttps://hdl.handle.net/10735.1/3878
Majid Minary-Jolandan is an Assistant Professor of Mechanical Engineering. His research interests include:
- Nanobiomechanics
- Scanning Probe microscopy
- Bioinspired and biomimetic nanomaterials
- Nanomechanics of living cells and biological systems
- Nanomanufacturing
- Microfabrication
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Browsing Minary-Jolandan, Majid by Author "Behroozfar, Ali"
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Item Multi-Physics Simulation of Metal Printing at Micro/Nanoscale Using Meniscus-Confined Electrodeposition: Effect of Nozzle Speed and Diameter(American Institute of Physics Inc, 2018-08-31) Morsali, Seyedreza; Daryadel, Soheil; Zhou, Zhong; Behroozfar, Ali; Baniasadi, Mahmoud; Moreno, Salvador; Qian, Dong; Minary-Jolandan, Majid; Morsali, Seyedreza; Daryadel, Soheil; Zhou, Zhong; Behroozfar, Ali; Baniasadi, Mahmoud; Moreno, Salvador; Qian, Dong; Minary-Jolandan, MajidMeniscus-confined electrodeposition (MCED) is a solution-based, room temperature process for 3D printing of metals at micro/nanoscale. In this process, a meniscus (liquid bridge or capillary) between a nozzle and a substrate governs the localized electrodeposition process, which involves multiple physics of electrodeposition, fluid dynamics, mass, and heat transfer. We have developed a multiphysics finite element (FE) model to investigate the effects of nozzle speed (v N) and nozzle diameter (D0) in the MCED process. The simulation results are validated with experimental data. Based on theoretical approach and experimental observation, the diameter of the deposited wire is in the range of 0.5-0.9 times of the nozzle diameter. The applicable range for vN for various nozzle diameters is computed. The results showed that the contribution of migration flux to total flux remains nearly constant (∼50%) for all values of pipette diameter in the range examined (100 nm-5 μm), whereas the contribution of diffusion and evaporation fluxes to total flux increase and decrease with the increasing pipette diameter, respectively. Results of this multiphysics study can be used to guide the experiment for optimal process conditions. © 2017 Author(s).Item Toward Control of Microstructure in Microscale Additive Manufacturing of Copper Using Localized Electrodeposition(Wiley-VCH Verlag GmbH, 2019-01) Daryadel, Soheil; Behroozfar, Ali; Minary-Jolandan, Majid; Minary-Jolandan, MajidThe progress in microscale additive manufacturing (μ-AM) of metals requires engineering of the microstructure for various functional applications. In particular, achieving in situ control over the microstructure during 3D printing is critical to eliminate the need for post-processing and annealing. Recent reports have demonstrated the possibility of electrochemical μ-AM of nanotwinned metals, in which the presence of parallel arrays of twin boundaries (TBs) are known to enhance mechanical and electrical properties. For the first time, the authors report that the microstructure of metals printed using the microscale localized pulsed electrodeposition (L-PED) process can be controlled in situ during 3D-printing. In particular, the authors show that through electrochemical process parameters the density and the orientation of the TBs, as well as the grain size can be controlled. The results of the in situ SEM microcompression experiments on directly 3D-printed micro-pillars show that such control over microstructure directly correlates with the mechanical properties of the printed metal.