Please visit our Google Scholar or ReseachGate pages. Our recent publications are listed below.

Basic and Applied Research Peer-reviewed Publications

2024

  • Eric Wilkinson, Margaret Stack, Eunha Hoh, Sarah Poletti, Natalie Mladenov, George Youssef,*”Cigarette Filters: A Benchmarking Investigation of Thermal and Chemical Attributes” Cellulose, 2024, (Accepted).
  • Amritesh Kumar, Scott Newacheck, and George Youssef “Cumulative Optimization of Magnetoelectric Composite-based Wireless Energy Transfer” Engineering Research Express, 2024, (Accepted).
  • Behrad Koohbor, Kazi Zahir Uddin, Matthew Heras, George Youssef, Dennis Miller, Subramani Sockalingam, Michael A. Sutton, Thomas Kiel “Strain Rate Sensitivity of Rotating-Square Auxetic Metamaterials” International Journal of Impact Engineering, 2024, (Accepted).
  • Newcheck, Scott, Huynh, Nha Uyen, and George Youssef “Mechano-Electro-Magneto-Optical Properties of Giant PCBM Crystals” Materials Research Innovations, 2024 (Accepted).
  • Jonathan Christian Cabrera; Abril Alcaraz; George Youssef; Julio R. Valdes “Strength characteristics of dry–pressed thermally–bonded clay–polymer composites” Journal of Materials in Civil Engineering, 2024 (Accepted).
  • Youssef, George, Mark Smeets, Behrard Koohbor “The Impact Performance of Density-graded Polyurea Elastomeric Foams” Cellular Polymers, 2024 (Accepted).
  • Huffman, Brandon, Anil Singh, Behrad Koohbor, George Youssef “Vat Photopolymerization 3D Printing of Glass Microballoon-Reinforced TPMS Meta-Structures” Composites Part B, 2024 (Accepted).
  • Kazi Zahir Uddin, Hai Anh Nguyen, Thanh T. Nguyen, Mitja Trkov, George Youssef, Behrad Koohbor “In-plane Density Gradation of Shoe Midsoles for Optimal Energy Absorption Performance” Journal of Sports Engineering and Technology, 2024 (Accepted)
  • Amritesh Kumar and George Youssef “Coexistence of Hardening and Softening Phenomena in Elastomeric Polymers under Nano-Impact Loading” Macromolecular Materials and Engineering, 2024 (Accepted).
  • Ramiro Mantecón *, Borja Valverde-Marcos, Ignacio Rubio, George Youssef, José Antonio Loya, José Díaz-Álvarez, María Henar Miguélez “Additive manufacturing of head surrogates for evaluation of protections in sports” Polymers, 2024 (Accepted).
  • Anil Singh*, Mia Chen*, and George Youssef “Comparative Characterization of the Viscoelastic Properties of Additive Manufacturing Polymers” Mechanics of Time-Dependent Materials, 2024 (Accepted) – [*equally contributing first authors].
  • Celia Rufo-Martín, Ramiro Mantecón, George Youssef, José Díaz-Álvarez, and Henar Miguélez “Multiscale characterization of additively manufactured of PMMA: the influence of sterilization.” Rapid Prototyping Journal, 2024, (Accepted).
  • Bohan Yin, Monika Gosecka, M. Bodaghi, Daniel Crespy, George Youssef, Jagan Mohan Dodda, Siu Hong Dexter Wong, Abu Bin Imran, Mateusz Gosecki, Arjaree Jobdeedamrong, M. Afzali Naniz, A. Zolfagharian “Engineering multifunctional dynamic hydrogel for biomedical and tissue regenerative applications” Chemical Engineering Journal, 2024, (Accepted).
  • Scott Newacheck, Nha Uyen Huynh, and George Youssef. “Title: Tunable and Switchable Magnetoresistance of P3HT:PCBM Organic Framework” Materials Letters, 2024, (Accepted).
  • Behrad Koohbor, Wei Xuea, Kazi Zahir Uddina, Daniel Nerbetskia, Bradley Steigera, Joseph Kenneya, Dana Yarema, and George Youssef. “Fabrication and Characterization of Electrically Conductive 3D Printable TPU/MWCNT Filaments for Strain Sensing in Large Deformation Conditions” Advanced Sensor Research, 2024, (Accepted).
  • Ranya A. Zina; Marco Pardo; George Youssef; Julio R. Valdes. “Microwave-Mediated Polymer Bonding of Sands: Experimental Study” ASCE’s Journal of Materials in Civil Engineering, 2024, (Accepted).
  • El-Gizawy, A. S., A. A. Melaibari, and G. Youssef. “Integrated Approach at the Process-Property-Performance Nexus to Characterizing Process-Induced Properties and Behavior of Additively Manufactured Thermoplastic Polymers.” J Adv Mater Sci Eng 4, no. 1 (2024): 1-10.
  • Paul Kauvaka, Mark Smeets, Koohbor Behrad, and George Youssef. “Impact Response of Polyurea Elastomeric Foams” Journal of Dynamic Behavior of Materials, 2024, (Accepted).
  • Anil Singh, Behrad Koohbor, and George Youssef. “Full-field Characterizations of Additively Manufactured Composite Cellular Structures” Composites Part B: Engineering, 2024, (Accepted).

2023

  • Ramiro Mantecón, Alvaro Ruiz, Benjamin M Wheatley, José Díaz-Álvarez, Henar Miguélez, and George Youssef “Time-dependent Mechanical Response of Synthetic Tibia” Journal of Biomechanical Engineering, 2023, (Accepted).
  • Kumar, Amritesh, David Pullman, and George Youssef. “Spectroscopic probing of ultraviolet-induced degradation in elastomeric polyurea.” Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy(2023): 123804.
  • Huynh, Nha Uyen, Amritesh Kumar, Maryam Ghorbani, and George Youssef. “Terahertz characterization of combined pressure-shear shock loaded aromatic polyurea.” Polymer Testing 129 (2023): 108279.
  • Somer Nacy, Behrad Koohbor, and George Youssef. “Frequency domain analyses of low-velocity impact loading of elastomeric foams.” Mechanical Systems and Signal Processing 205 (2023): 110881.
  • Anil Singh, Vincent Ngo, Nha Uyen Huynh, Behrad Koohbor, and George Youssef. “Structural Performance of Additively Manufactured Composite Lattice Structures: Strain Rate, Cell Geometry, and Weight Ratio Effects.” Advanced Engineering Materials (2023).
  • Mark Smeets, Paul Kauvaka, Kazi Uddin, Behrad Koohbor, and George Youssef. “Full‐Field Analyses of Density‐Graded Elastomeric Foams Under Quasistatic and Impact Loadings.” Advanced Engineering Materials 25, no. 24 (2023): 2300994.
  • Amritesh Kumar, Scott Newacheck, and George Youssef. “Parametric investigations of wireless energy transfer using strain-mediated magnetoelectric transmitter-receiver.” Smart Materials and Structures 32, no. 11 (2023): 115023.
  • Kazi Zahir Uddin, Ibnaj Anamika Anni, George Youssef, and Behrad Koohbor. “Modulating poisson’s ratio in flexible honeycombs by density and architecture gradations.” Engineering Research Express 5, no. 4 (2023): 045007.
  • Gómez-García, D., A. Díaz-Álvarez, George Youssef, Henar Miguélez, and J. Díaz-Álvarez. “Machinability of 3D printed peek reinforced with short carbon fiber.” Composites Part C: Open Access 12 (2023): 100387.
  • Fakhri, Osamah, George Youssef, Somer Nacy, Adnan Naji Jameel Al-Tamimi, O. Hussein, Wisam T. Abbood, Oday Ibraheem Abdullah, and Nazar Kais Al-Karkhi. “A Systematic Approach to Stable Grasping of a Two-Finger Robotic Hand Activated by Jamming of Granular Media.” Electronics 12, no. 8 (2023): 1902.
  • Huynh, Nha Uyen, and George Youssef. “In-operando spectroscopic interrogation of macromolecular conformational changes in polyurea elastomers under high strain rate loading.” Journal of the Mechanics and Physics of Solids 175 (2023): 105297.
  • Smeets, Mark, Behrad Koohbor, and George Youssef. “Quasi-Static Mechanical Response of Density-Graded Polyurea Elastomeric Foams.” ACS Applied Polymer Materials 5, no. 4 (2023): 2840-2851.
  • Huynh, Nha Uyen, Behrad Koohbor, and George Youssef. “Light‐Matter Interactions Revealing Load‐Induced Phase Mobility in Elastomers.” Macromolecular Rapid Communications 44, no. 7 (2023): 2200725.
  • Youssef, George, and Somer Nacy. “Stress-based investigations of the performance of magnetoelectric composite cylinders.” Mechanics Based Design of Structures and Machines 51, no. 1 (2023): 540-554.

2022

  • Mantecón, Ramiro, Miguel Marco, Ana Muñoz-Sanchez, George Youssef, José Díaz-Álvarez, and Henar Miguélez. “Additive Manufacturing and Mechanical Characterization of PLA-Based Skull Surrogates.” Polymers 15, no. 1 (2022): 58.
  • Uddin, Kazi Zahir, Nicholas Pagliocca, Ibnaj Anamika Anni, George Youssef, and Behrad Koohbor. “Multiscale strain field characterization in flexible planar auxetic metamaterials with rotating squares.” Advanced Engineering Materials 25, no. 2 (2023): 2201248.
  • Huynh, Nha Uyen, Behrad Koohbor, and George Youssef. “Localized creep analysis of polyurea elastomer from full-field measurements.” Mechanics of Time-Dependent Materials 27, no. 3 (2023): 727-741.
  • Uddin, Kazi Z., Ibnaj A. Anni, George Youssef, and Behrad Koohbor. “Tuning the Mechanical Behavior of Density-Graded Elastomeric Foam Structures via Interlayer Properties.” ACS omega 7, no. 42 (2022): 37189-37200.
  • Youssef, George, Yazeed Kokash, Kazi Zahir Uddin, and Behrad Koohbor. “Density‐Dependent Impact Resilience and Auxeticity of Elastomeric Polyurea Foams.” Advanced Engineering Materials 25, no. 1 (2023): 2200578.
  • Malley, Steven, Crystal Reina, Somer Nacy, Jérôme Gilles, Behrad Koohbor, and George Youssef. “Predictability of mechanical behavior of additively manufactured particulate composites using machine learning and data-driven approaches.” Computers in Industry 142 (2022): 103739.
  • Pagliocca, Nicholas, George Youssef, and Behrad Koohbor. “In-Plane mechanical and failure responses of honeycombs with syntactic foam cell walls.” Composite Structures 295 (2022): 115866.
  • Anni, Ibnaj Anamika, Kazi Zahir Uddin, Nicholas Pagliocca, Nand Singh, Oyindamola Rahman, George Youssef, and Behrad Koohbor. “Out-of-plane load-bearing and mechanical energy absorption properties of flexible density-graded TPU honeycombs.” Composites Part C: Open Access 8 (2022): 100284.
  • Koohbor, B., G. Youssef, K. Z. Uddin, and Y. Kokash. “Dynamic behavior and impact tolerance of elastomeric foams subjected to multiple impact conditions.” Journal of Dynamic Behavior of Materials 8, no. 3 (2022): 359-370.
  • Pagliocca, Nicholas, Kazi Zahir Uddin, Ibnaj Anamika Anni, Chen Shen, George Youssef, and Behrad Koohbor. “Flexible planar metamaterials with tunable Poisson’s ratios.” Materials & Design 215 (2022): 110446.
  • Abbood, Wisam T., Somer M. Nacy, George Youssef, and Oday I. Abdullah. “Dynamic performance of a series elastic actuator with variable stiffness logarithmic spiral spring.” Intelligent Service Robotics 15, no. 3 (2022): 275-287.
  • Huynh, Nha Uyen, and George Youssef. “Ex situ spectroscopic characterization of residual effects of thermomechanical loading on polyurea.” Journal of Engineering Materials and Technology 144, no. 3 (2022): 031002.
  • Do, Sophia, Jash Canilao, Sophia Stepp, and George Youssef. “Thermomechanical investigations of polyurea microspheres.” Polymer Bulletin (2022): 1-15.

2021

  • Huynh, Nha Uyen, Carlos Gamez, and George Youssef. “Spectro‐Microscopic Characterization of Elastomers Subjected to Laser‐Induced Shock Waves.” Macromolecular Materials and Engineering 307, no. 2 (2022): 2100506.
  • Newacheck, Scott, Anil Singh, and George Youssef. “On the magnetoelectric performance of multiferroic particulate composite materials.” Smart Materials and Structures 31, no. 1 (2021): 015022.
  • Newacheck, Scott, and George Youssef. “Microscale magnetoelectricity: Effect of particles geometry, distribution, and volume fraction.” Journal of Intelligent Material Systems and Structures 33, no. 10 (2022): 1338-1348.
  • Newacheck, Scott, Nha Uyen Huynh, and George Youssef. “Colossal Crystals in P3HT: PCBM Blends for Enhanced Organic Magnetism.” Crystal Growth & Design 21, no. 9 (2021): 5300-5305.
  • Rahman, Oyindamola, Kazi Zahir Uddin, Jeeva Muthulingam, George Youssef, Chen Shen, and Behrad Koohbor. “Density‐Graded Cellular Solids: Mechanics, Fabrication, and Applications.” Advanced engineering materials 24, no. 1 (2022): 2100646.
  • Malley, Steven, Scott Newacheck, and George Youssef. “Additively manufactured multifunctional materials with magnetoelectric properties.” Additive Manufacturing 47 (2021): 102239.
  • Koohbor, Behrad, Nicholas Pagliocca, and George Youssef. “A multiscale experimental approach to characterize micro-to-macro transition length scale in polymer foams.” Mechanics of materials 161 (2021): 104006.
  • Moradi, Hamidreza, Roozbeh Beh Aein, and George Youssef. “Multi‐objective design optimization of dental implant geometrical parameters.” International Journal for Numerical Methods in Biomedical Engineering 37, no. 9 (2021): e3511.
  • Gamez, Carlos, Nha Uyen Huynh, and George Youssef. “In-silico experimentations of multimode shock response of polyurea.” International Journal of Mechanical Sciences 204 (2021): 106542.
  • Nacy, Somer, and George Youssef. “Demagnetization Effect on the Magnetoelectric Response of Composite Multiferroic Cylinders.” Journal of Composites Science 5, no. 5 (2021): 139.
  • Nacpil, Edric John Cruz, Somer Nacy, and George Youssef. “Feasibility assessment of transfer functions describing biomechanics of the human lower limb during the gait cycle.” Biomedical Signal Processing and Control 69 (2021): 102776.
  • Youssef, George, Somer Nacy, and Scott Newacheck. “Tuning the performance of magnetoelectric layered cylindrical composites.” Mechanics Based Design of Structures and Machines 51, no. 6 (2023): 3467-3479.
  • Stampfli, Ryan, Nha Uyen Huynh, and George Youssef. “Long-term converse magnetoelectric response of actuated 1-3 multiferroic composite structures.” Magnetochemistry 7, no. 4 (2021): 55.
  • Youssef, George, Scott Newacheck, Nha Uyen Huynh, and Carlos Gamez. “Multiscale Characterization of E-Glass/Epoxy Composite Exposed to Extreme Environmental Conditions.” Journal of Composites Science 5, no. 3 (2021): 80.
  • Blourchian, Aryan, Atif Mohammed Shaik, Nha Uyen Huynh, and George Youssef. “Segmental evolution of ultraviolet weathered polyurea.” Journal of Polymer Research 28 (2021): 1-9.
  • Youssef, George, Somer Nacy, and Nha Uyen Huynh. “Mechanics of microspheres reinforced hollow microcells.” Journal of Applied Mechanics 88, no. 4 (2021): 041009.
  • Stengel, Dillan, J. Bennett Addison, David Onofrei, Nha Uyen Huynh, George Youssef, and Gregory P. Holland. “Hydration‐induced β‐sheet crosslinking of α‐helical‐rich spider prey‐wrapping silk.” Advanced Functional Materials 31, no. 13 (2021): 2007161.
  • Huynh, N., and G. Youssef. “Physical evidence of stress-induced conformational changes in polymers.” Experimental Mechanics 61 (2021): 469-481.
  • Stampfli, Ryan, Scott Newacheck, and George Youssef. “Fully-coupled computational modeling of the dynamic response of 1-3 multiferroic composite structures.” International Journal of Mechanical Sciences 191 (2021): 106086.
  • Koohbor, Behrad, Aryan Blourchian, Kazi Zahir Uddin, and George Youssef. “Characterization of energy absorption and strain rate sensitivity of a novel elastomeric polyurea foam.” Advanced engineering materials 23, no. 1 (2021): 2000797.
  • Youssef, George, Jordan Smilo, Aryan Blourchian, Nha Uyen Huynh, and Arbi V. Karapetian. “Multifunctional fused deposition modeled acrylonitrile butadiene styrene-based structures with embedded conductive channels.” Journal of Engineering Materials and Technology 143, no. 1 (2021): 011001.

2020

  • Reed, Nathan, Nha Uyen Huynh, Brooke Rosenow, Kristoffer Manlulu, and George Youssef. “Synthesis and characterization of elastomeric polyurea foam.” Journal of Applied Polymer Science137, no. 26 (2020): 48839.
  • Shaik, Atif Mohammed, Nha Uyen Huynh, and George Youssef. “Micromechanical behavior of ultraviolet-exposed polyurea.” Mechanics of Materials140 (2020): 103244.
  • Youssef, George, Scott Newacheck, and Louay S. Yousuf. “Insights into the displacement field in magnetoelectric composites.” Journal of Intelligent Material Systems and Structures31, no. 3 (2020): 436-444.
  • Huynh, Nha Uyen, Sam Kassegne, and George Youssef. “Comparative study of tuning of microfabrication parameters for improving electrochemical performance of platinum and glassy carbon microelectrodes in neural prosthetics.” Microsystem Technologies26 (2020): 775-785.
  • Gonzalez, Jose, Somer Nacy, and George Youssef. “Finite element analysis of human skull bone adaptation to mechanical loading.” Computer Methods in Biomechanics and Biomedical Engineering 24, no. 7 (2020): 753-764.
  • Hille, D., G. Youssef, A. Mohammad, and K. Morsi. “Novel Ballistic Processing of Thick Films: Structural Evolution and Mechanical Behavior.” Metallurgical and Materials Transactions A 51 (2020): 6432-6438.
  • Do, Sophia, Nha Uyen Huynh, Nathan Reed, Atif Mohammad Shaik, Somer Nacy, and George Youssef. “Partially-perforated self-reinforced polyurea foams.” Applied Sciences 10, no. 17 (2020): 5869.
  • Do, Sophia, Sophia Stepp, and George Youssef. “Quasi-static and dynamic characterization of polyurea microspheres reinforced polyurea matrix composite.” Materials Today Communications 25 (2020): 101464.
  • Uddin, Kazi Zahir, George Youssef, Mitja Trkov, Hamid Seyyedhosseinzadeh, and Behrad Koohbor. “Gradient optimization of multi-layered density-graded foam laminates for footwear material design.” Journal of Biomechanics 109 (2020): 109950.
  • Youssef, George, Somer Nacy, and Scott Newacheck. “Leveraging strain localization to improve the performance of magnetoelectric composite cylinders.” Europhysics Letters 131, no. 1 (2020): 14003.
  • Newacheck, Scott, and George Youssef. “Magnetoelectricity beyond saturation.” Materials Horizons 7, no. 8 (2020): 2124-2129.
  • Youssef, George, Scott Newacheck, Mario Lopez, and Ryan Stampfli. “Triaxial Magnetic Flux Emanation in Response to Uniaxial Electric Field in Magnetoelectric Composite Cylinder Structure.” physica status solidi (a) 217, no. 15 (2020): 2000177.
  • Newacheck, Scott, and George Youssef. “Noncontact spatiotemporal strain mapping of composite multiferroic cylinders.” International Journal of Mechanics and Materials in Design 16 (2020): 857-868.
  • Huynh, Nha Uyen, Jordan Smilo, Aryan Blourchian, Arbi V. Karapetian, and George Youssef. “Property-map of epoxy-treated and as-printed polymeric additively manufactured materials.” International Journal of Mechanical Sciences 181 (2020): 105767.
  • Youssef, George, Nathan Reed, Nha Uyen Huynh, Brooke Rosenow, and Kristoffer Manlulu. “Experimentally-validated predictions of impact response of polyurea foams using viscoelasticity based on bulk properties.” Mechanics of Materials 148 (2020): 103432.
  • Stampfli, Ryan, and George Youssef. “Multiphysics computational analysis of multiferroic composite ring structures.” International Journal of Mechanical Sciences 177 (2020): 105573.
  • Youssef, George, Somer Nacy, and Scott Newacheck. “Dynamic magnetoelectric response of composite multiferroics cylinders.” Smart Materials and Structures 29, no. 3 (2020): 035025.

2019

  • Newacheck, Scott, and George Youssef. “Wireless energy transfer based on strain-mediated composite multiferroics.” Smart Materials and Structures29, no. 1 (2019): 015014.
  • Newacheck, Scott, Wayne Weers, Danielle Kolber, Kieran Rutherford, and George Youssef. “ADVANCING SHIP MODEL’S MOBILITY AND AGILITY USING STEERABLE RIM-DRIVEN THRUSTERS.” Journal of Ocean Technology14, no. 4 (2019).
  • Youssef, George, Geovana Pessoa, and Somer Nacy. “Effect of elevated operating temperature on the dynamic mechanical performance of E-glass/epoxy composite.” Composites Part B: Engineering173 (2019): 106937.
  • Newacheck, Scott, and George Youssef. “Synthesis and characterization of polarized novel 0–3 Terfenol-D/PVDF-TrFE composites.” Composites Part B: Engineering172 (2019): 97-102.
  • Do, S., B. Rosenow, N. Reed, A. Mohammed, K. Manlulu, and G. Youssef. “Fabrication, characterization, and testing of novel polyurea foam.” PU Magazine International16, no. 2 (2019): 104-107.

2018

  • Newacheck, Scott, Taylor Webster, and George Youssef. “The effect of multidirectional bias magnetic fields on the converse magnetoelectric response of multiferroic concentric composite ring.” Applied Physics Letters113, no. 17 (2018).
  • Martin, Nicholas, and George Youssef. “Dynamic properties of hydrogels and fiber-reinforced hydrogels.” Journal of the mechanical behavior of biomedical materials85 (2018): 194-200.
  • Youssef, George, Joseph Brinson, and Ian Whitten. “The effect of ultraviolet radiation on the hyperelastic behavior of polyurea.” Journal of Polymers and the Environment26 (2018): 183-190.

2017

  • Youssef, George, Scott Newacheck, and Mario Lopez. “Mapping magnetoelastic response of terfenol-D ring structure.” Applied Physics Letters110, no. 19 (2017).
  • Youssef, George, Cesar Lopez, and J. Michael Kabo. “Composite mechanics of the multilayer structure of the annulus fibrosus.” Journal of Mechanical Engineering1, no. 5 (2017): 126-134
  • Youssef, George, Mario Lopez, and Scott Newacheck. “On the effect of polarization direction on the converse magnetoelectric response of multiferroic composite rings.” Smart Materials and Structures26, no. 3 (2017): 037003.
  • Lopez, Mario, and George Youssef. “Converse magneto-electric coefficient of composite multiferroic rings.” In Mechanics of Composite and Multi-functional Materials, Volume 7: Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics, pp. 185-191. Springer International Publishing, 2017.
  • Youssef, George, and Ian Whitten. “Dynamic properties of ultraviolet-exposed polyurea.” Mechanics of Time-Dependent Materials21 (2017): 351-363.

2016

  • Whitten, Ian, and George Youssef. “The effect of ultraviolet radiation on ultrasonic properties of polyurea.” Polymer Degradation and Stability123 (2016): 88-93.
  • Chavez, Andres C., Mario Lopez, and George Youssef. “Converse magneto-electric coefficient of concentric multiferroic composite ring.” Journal of Applied Physics119, no. 23 (2016).

2015

  • Moon, Won, Kimberley W. Wu, Matthew MacGinnis, Jay Sung, Howard Chu, George Youssef, and Andre Machado. “The efficacy of maxillary protraction protocols with the micro-implant-assisted rapid palatal expander (MARPE) and the novel N2 mini-implant—a finite element study.” Progress in orthodontics16, no. 1 (2015): 1-14.

2014

  • Gupta, Vijay, and George Youssef. “Orientation-dependent impact behavior of polymer/EVA bilayer specimens at long wavelengths.” Experimental Mechanics54 (2014): 1133-1137.
  • MacGinnis, Matt, Howard Chu, George Youssef, Kimberley W. Wu, Andre Wilson Machado, and Won Moon. “The effects of micro-implant assisted rapid palatal expansion (MARPE) on the nasomaxillary complex—a finite element method (FEM) analysis.” Progress in orthodontics15 (2014): 1-15.

2013

  • Jain, Amit, George Youssef, and Vijay Gupta. “Dynamic tensile strength of polyurea-bonded steel/E-glass composite joints.” Journal of adhesion science and technology27, no. 4 (2013): 403-412.
  • Youssef, G., R. Crum, S. V. Prikhodko, D. Seif, G. Po, N. Ghoniem, S. Kodambaka, and V. Gupta. “The influence of laser-induced nanosecond rise-time stress waves on the microstructure and surface chemical activity of single crystal Cu nanopillars.” Journal of Applied Physics 113, no. 8 (2013).
  • Youssef, George, and Vijay Gupta. “Resonance in polyurea-based multilayer structures subjected to laser-generated stress waves.” Experimental Mechanics53 (2013): 145-154.

2012

  • Youssef, George, and Vijay Gupta. “Dynamic tensile strength of polyurea.” Journal of Materials Research27, no. 2 (2012): 494-499.
  • Youssef, George, and Vijay Gupta. “Dynamic response of polyurea subjected to nanosecond rise-time stress waves.” Mechanics of Time-Dependent Materials16 (2012): 317-328.
  • Youssef, George, Caroline Moulet, Mark S. Goorsky, and Vijay Gupta. “Inter-wafer bonding strength characterization by laser-induced shock waves.” Journal of Applied Physics111, no. 9 (2012).
  • Kim, Hyoungil, Jason Citron, George Youssef, Artemio Navarro, and Vijay Gupta. “Dynamic fracture energy of polyurea-bonded steel/E-glass composite joints.” Mechanics of Materials45 (2012): 10-19.

Engineering Education Peer-reviewed Publications:

  1. Youssef, G., Ainsworth, E., Shapiro, C., Whang Sayson, H., and Levis-Fitzgerald, M. “Comprehensive Research Experience for Undergraduates.” Proceedings of 2016 American Society of Engineering Education (ASEE) Annual Conference.
  2. Youssef, G. and Arutyunov, V. “An Approach to Integrating Systems Engineering into Senior Design.” Proceedings of 2016 American Society of Engineering Education (ASEE) Annual Conference.
  3. Chavez, M. Ferrer, S. Jaco, A. Roldan, J. Sim, and G. Youssef. “K-12 Tunable Education Modules.” Proceedings of 2014 American Society of Engineering Education (ASEE) Annual Conference.
  4. Ganhdi, S. J., Nandikolla, V., Youssef, G., and Bishay, P. “Using Career Pathways to Assimilate High School Students into the Engineering Profession.” Proceedings of 2016 American Society of Engineering Education (ASEE) Annual Conference.
  5. G. Youssef and M. Kabo “Machine Design: Redesigned.” Proceedings of 2015 American Society of Engineering Education (ASEE) Annual Conference.
  6. G. Youssef and R. Ryan, “Relationship between Exam Format and Learning Effectiveness,” Proceedings of the 2012 ASEE PSW Section Conference, 2012:7.

Academic Textbooks:

  1. George Youssef “Applied Mechanics of Polymers: Properties, Processing, and Behavior.” Elsevier. Paperback ISBN: 9780128210789 – eBook ISBN: 9780128210796

Conference Presentations:

  1. “Additive Manufacturing of Reinforced Honeycomb Structures” George Youssef. ASME 2023 Aerospace Structures, Structural Dynamics, and Materials Conference.
  2. “Leveraging Light-Matter Interactions for Investigation of the Shock Response of Elastomers” George Youssef. ASME 2023 Aerospace Structures, Structural Dynamics, and Materials Conference.
  3. “The Effect of Layering Interfaces on the Mechanical Behavior of Polyurea Elastomeric Foams” Mark Smeets, Behrad Koohbor, and George Youssef. 2023 SEM Annual Conference.
  4. “Strain Recovery and Thermal Healing of Cyclic-Loaded Elastomeric Polyurea Foam” Kazi Zahir Uddin, George Youssef, and Behrad Koohbor. 2023 SEM Annual Conference.
  5. “Leveraging Creep Deformation for Revealing Molecular-Scale Processes” Nha Uyen Huynh, Behrad Koohbor, and George Youssef. 2023 SEM Annual Conference.
  6. “Mechanical Behavior of Shock Loaded Elastomeric Polymers” Nha Uyen Huynh and George Youssef. 2023 SEM Annual Conference.
  7. “Moderate-velocity Impact Response of Polyurea Elastomeric Foams” Paul Kauvaka, Mark Smeets, Behrad Koohbor, and George Youssef. 2023 SEM Annual Conference.
  8. “Strain-rate Dependent Mechanical Response of Reinforced Ordered Elastomeric Cellular Structures” Anil K Singh, Vincent Ngo, Nha Uyen Huynh, Behrad Koohbor, and George Youssef. 2023 SEM Annual Conference.
  9. “Spectroscopic Characterization of Thermal Transitions in Polymers.” Nha Uyen Huynh and George Youssef. 2022 SEM Annual Conference.
  10. “Elucidation of the Creep Response of Polymers using Light-matter Interactions.” Nha Uyen Huynh and George Youssef. 2022 SEM Annual Conference.
  11. “Spectroscopic Characterizations of Polymers Under Ultrahigh Strain Rate Loading.” Nha Uyen Huynh and George Youssef. 2022 MRS Spring Meeting.
  12. “Spectro-mechanical Characterization of Shock-loaded Polyurea.” Nha Uyen Huynh and George Youssef. ACS Spring 2022 Meeting & Exposition.
  13. “Computational Modeling of Hydrogen Bonding in Polyurea.” Sasha Gardner, Nha Uyen Huynh, George Youssef, and Andrew Cooksy. ACS Spring 2022 Meeting & Exposition.
  14. “Molecular Interrogation of Polymers using Terahertz Spectroscopy.” Nha Uyen Huynh and George Youssef. SEM 2021 Virtual Annual Conference.
  15. “Electromechanically-enhanced Organic Composite Multiferroics” Scott Newacheck and George Youssef. SEM 2021 Virtual Annual Conference.
  16. “Magnetoelectric Properties of 3D Printed Multifunctional Materials.” Scott Newacheck, Steven Malley, and George Youssef.  SEM Annual 2021 Virtual Meeting.
  17. “Spectroscopic Explorations of Thermal Transitions of Polyurea.” Nha Uyen Huynh and George Youssef. MRS 2021 Virtual Spring Meeting & Exhibit.
  18. “Fabrication and Characterization of Ferromagnetic Organic Semi-Crystalline Polymers.” Scott Newacheck and George Youssef. MRS 2021 Virtual Spring Meeting & Exhibit.
  19. “Soft Organic Multiferroic Polymer Composites.” Scott Newacheck and George Youssef. MRS 2021 Virtual Spring Meeting & Exhibit.
  20. “Additively Manufactured Magnetoelectric Multifunctional Materials.” Steven Malley and George Youssef. MRS 2021 Virtual Spring Meeting & Exhibit.
  21. “Spectroscopic Explorations of Thermal Transitions of Polyurea.” Nha Uyen Huynh and George Youssef. MRS 2021 Virtual Spring Meeting & Exhibit.
  22. “Magneto-Mechano-Electric Characterization of Polarized 0-3 Terfenol-D/PVDF-TrFE Composites.” Scott Newacheck and George Youssef. MRS 2019 Fall Meeting and Exhibit.
  23. “Fatigue Crack Growth Behavior of Multiferroic Concentric Composite Rings.” Ryan M. Stampfli and George Youssef. MRS 2019 Fall Meeting and Exhibit (Poster).
  24. “In Situ Characterization of Active Polymers Using Terahertz Time-Domain Spectroscopy.” Nha Uyen Huynh and George Youssef. MRS 2019 Fall Meeting and Exhibit (Poster).
  25. “Magneto-Electro-Mechanical Properties of Giant Magnetostrictive Particulates Polarized Electroactive Polymer Matrix” S. Newacheck and G. Youssef. ASME 2019 International Mechanical Engineering Congress and Exposition.
  26. “Strain-Mediated Magnetoelectric Composites for Wireless Energy Transfer” S. Newacheck and G. Youssef. ASME 2019 International Mechanical Engineering Congress and Exposition.
  27. “Enhancing the Magnetoelectric Performance of Layered Cylindrical Composites Through Non-Traditional Boundary Conditions” S. Newacheck, S. Nacy and G. Youssef. ASME 2019 International Mechanical Engineering Congress and Exposition.
  28. “Spectroscopic-Mechanical Behavior of Polymers” N. Huynh and G. Youssef. ASME 2019 International Mechanical Engineering Congress and Exposition.
  29. “Multifunctional Additively Manufactured Structures” N. Huynh, J. Smilo, A. Blourchian, and G. Youssef. ASME 2019 International Mechanical Engineering Congress and Exposition.
  30. “Interfacial Fatigue Crack Propagation Behavior of Multiferroic Concertic Composite Rings” R. Stampfli and G. Youssef. ASME 2019 International Mechanical Engineering Congress and Exposition.
  31. “Fabrication, Characterization, and Testing of Novel Polyurea Foams.” S. Do, B. Rosenow, N. Reed, A. Mohammed, K. Manlulu, and G.Youssef. 2018 Polyurethanes Technical Conference.
  32. “Interrelation between quasi-static and dynamic performance of polymeric foam” N. Reed, B. Rosenow, and G. Youssef. ASME 2017 International Mechanical Engineering Congress and Exposition.
  33. “Dynamic Mechanical Behavior of Hydrogels and Fiber-reinforced Hydrogels” N. Martin and G. Youssef. ASME 2017 International Mechanical Engineering Congress and Exposition.
  34. “Effect of Ultraviolet on the Microstructure of Polyurea” M. Shaik and G. Youssef. ASME 2017 International Mechanical Engineering Congress and Exposition.
  35. “Synthesis and Characterization of Polyurea Microspheres” S. Do, S. Stepp, and G. Youssef. ASME 2017 International Mechanical Engineering Congress and Exposition.
  36. “Ultra-High Strain Rate Deformation of Nano-Structured Face-Centered Cubic Metals.” D. Seif, G. Youssef, Po, V. Gupta, S. Kodambaka, and N. Ghoniem. ASME 2011 International Mechanical Engineering Congress and Exposition.
  37. “Spallation and Phase Transformation Mechanisms in Laser-Shocked Nano-Crystals: Computer Simulations and Experimental Observations.” D. Seif, G. Po, R. Crum, G.  Youssef, S. Prikhodko, S. Kodambaka, V. Gupta and N. Ghoniem. Plasticity 2013 Conference.
  38. “K-12 Tunable Education Modules: An Innovative Pedagogy.” A. Chavez, M. Ferrer, S. Jaco, A. Roldan, J. Sim and G. Youssef. Society of Hispanic Engineers 2013 Conference.
  39. “Acoustic Properties of Ultra-Violet Exposed Polyurea.” I. Whitten and G. Youssef. ASME 2013 International Mechanical Engineering Congress and Exposition.
  40. “The effect of UV on the Properties of Polyurea.” G. Youssef, J. Brinson, and I. Whitten. The 9th International Conference on Mechanics of Time-Dependent Materials, 2014.
  41. “Machine Design: Redesigned.” G. Youssef and M. Kabo. ASEE Annual Conference, 2014.
  42. “Composite Mechanics of Intervertebral Disc.” C. Lopez and G. Youssef. ASME 2015 International Mechanical Engineering Congress and Exposition.
  43. “Uncovering the Fundamentals Behavior of Annulus Fibrosus Using Composite Mechanics” G. Youssef and C. Lopez. Annual Conference and Exposition on Biomaterials.
  44. “Converse Magneto-electric Coefficient of Composite Multiferroic Rings” M. Lopez and G. Youssef. 2016 SEM XIII International Congress.
  45. “Dynamic Properties of Ultraviolet Exposed Polyurea.” G. Youssef. The 10th International Conference on Mechanics of Time-Dependent Materials, 2016.
  46. “Magneto-electric Response of Composite Multiferroic Annulus.” M. Lopez and G. Youssef. ASME 2015 International Mechanical Engineering Congress and Exposition.
  47. “K-12 Tunable Education Modules.” G. Youssef, A. Chavez, M. Ferrer, S. Jaco, A. Roldan, and J. Sim. 2014 ASEE Annual Conference, 2014.
  48. “Transfer Function Relating Tibial Acceleration to Leg Muscle SEMG During Walking.” E. Nacpil and G. Youssef. ASME 2013 International Mechanical Engineering Congress and Exposition.
  49. “Ultra-violet radiation effect on the Mechanical Properties of Polyurea.” J. Brinson and G. Youssef. ASME 2013 International Mechanical Engineering Congress and Exposition.
  50. “K-12 Tunable Education Modules: An Innovative Pedagogy.” A. Chavez, M. Ferrer, S. Jaco, A. Roldan, J. Sim, J. Werner, C. Lopez, and G. Youssef. Art of Innovation 2013 Conference.
  51. “Relationship between exam format and learning effectiveness.” G. Youssef and R. Ryan. American Society of Engineering Education, Pacific West Section, St. Louis Obispo, CA, USA, 2012.
  52. “Interfacial strength characterization of bonded-wafers using laser-induced stress waves.” G. Youssef, C. Moulet, M. Goorshy, and V. Gupta. Wafer Bonding Conference, Chemnitz Germany, 2011.

Invited Talks:

  1. “Magneto-Electro-Mechanical Characterization Of Novel Terfenol-D/P(Vdf-Trfe) Composites” University of Nevada, Las Vegas, NV. March 5th, 2020.
  2. “Recent Research Progress in Additive Manufacturing” NASA, Jet Propulsion Laboratory, Additive Manufacturing Forum – Pasadena, CA, July 12th, 2019.
  3. “Effect of Creep Loading on the Performance of E-Glass/Vinyl-ester Laminated Composites” Armorcast Products Company – North Hollywood, CA, January 17th, 2019
  4. “Experimental Investigations into the Effect of Ultraviolet on Polyurea” PPG Aerospace – Sylmar, CA, January 29th, 2018
  5. “Strain-mediated Electromagnetic Coupling in Composite Multiferroic Structures” Computational Sciences Research Center, San Diego State University San Diego, CA, September 8th, 2017
  6. “Strain-mediated Magnetoelectric Coupling in Composite Multiferroic Structures” College of Engineering and Computer Science, California State University Northridge, Northridge, CA, April 28th, 2017
  7. “Strain-mediated Electromagnetic Coupling in Composite Multiferroic Structures” Faculty of Engineering, Alexandria University, Egypt, January 9th, 2017

Patents and Patent Applications

  1. George Youssef, Gregory Sawvelle, and Nha Uyen Huynh. “Agile Terahertz Nondestructive Evaluation Apparatus for Integration in Polymers and Composite Additive Manufacturing Systems” U.S Patent Application No. 63/355,069
  2. George Youssef and Nha Uyen Huynh. “Integrated Temperature-Controlled, Ultrahigh Strain Rate Loading, and Spectroscopy Apparatus for Dynamic Characterization of Materials” U.S Patent Application No. 62/929,586.
  3. George Youssef and Luciano Demasi. “Versatile Mechanoelectric Energy Harvesting Structures” U.S Patent Application No. 62/929,593.
  4. George Youssef and Scott Newacheck. “Low-power High-Frequency Directional Tunable AC Magnetic Field Generator” U.S Patent Application No. 62/848,139.
  5. George Youssef and Nathan Reed. “Scalable Manufacturing Method of Property-Tailorable Polyurea Foam.” U.S. Patent Application No. 16/118,879.
  6. Gupta, Vijay, Jason K. Citron, and George H. Youssef. “Material for mitigating impact forces with collision durations in nanoseconds to milliseconds range.” U.S. Patent Application No. 13/879,616.

Book Chapters

  1. Lopez, Mario, and George Youssef. “Converse magneto-electric coefficient of composite multiferroic rings.” Mechanics of Composite and Multi-functional Materials, Volume 7. Springer International Publishing, 2017. 185-191.
  2. Gupta, Vijay, Ryan Crum, Carlos Game, Brian Ramirez, Ninh Le, George Youssef, Jason Citron, Andrew Kim, Amit Jain, and Utkarsh Misra. “Adhesive and Ultrahigh Strain Rate Properties of Polyurea Under Tension, Tension/Shear, and Pressure/Shear Loadings with Applications to Multilayer Armors.” Elastomeric Polymers with High Rate Sensitivity – Applications in Blast, Shockwave, and Penetration Mechanics, 1st Edition, Barsoum, Roshdy George 2015. 71-92.