The Grainger College of Engineering
Illinois Manufacturing Institute (IMI)

Ioannis Chasiotis

Ioannis Chasiotis
Ioannis Chasiotis
Professor, Associate Head, and Director of Graduate Studies

Primary Research Area

  • Aerospace Materials

Research Areas

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Education

  • Ph.D. Aeronautics-Minor in Materials Science, California Institute of Technology, Pasadena, CA. 2002
  • M.S. Aeronautics, California Institute of Technology, Pasadena, California. 1998
  • Diploma in Chemical Engineering, Aristotle University of Thessaloniki, Greece. 1996

Academic Positions

  • Professor, University of Illinois at Urbana-Champaign, Micro and Nanotechnology Laboratory, 2012-2025
  • Associate Professor, University of Illinois at Urbana-Champaign, Aerospace Engineering. Affiliate: Beckman Institute for Advanced Science and Technology, Micro and Nanotechnology Laboratory, Mechanical Sciences and Engineering, 2008-2012
  • Assistant Professor, University of Illinois at Urbana-Champaign, Aerospace Engineering. Affiliate, Beckman Institute for Advanced Science and Technology. Affiliate, Micro and Nanotechnology Laboratory. 2005-2008
  • Assistant Professor, University of Virginia, Mechanical and Aerospace Engineering. 2001-2005

Journal Editorships

  • Associate Technical Editor for Experimental Mechanics, 2006-2009
  • Associate Technical Editor for Experimental Mechanics, 2009-2012
  • Editor in Chief, Experimental Mechanics, 2016-2020

Research Interests

  • Atomic Force Microscopy (AFM)
  • Thin films, MEMS, and NEMS
  • Electrospinning
  • High fidelity 3D printing of polymers, metals and ceramics
  • Experimental mechanics of thin films, fibers, and nanofibers
  • Mechanics of interfaces
  • Time-dependent mechanics of soft and biological materials at small length scales
  • Deformation and damage mechanics of inhomogeneous/anisotropic materials
  • Experimental mechanics at the nanoscale

Primary Research Area

  • Aerospace Materials

Research Areas

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Selected Articles in Journals

  • O. Moronkeji, F. Sozio, K. Ghosh, A. Meddeb, A. Farahani, Z. Ounaies, I. Chasiotis, O. Lopez-Pamies, "The Nonlinear Elastic Deformation of Liquid Inclusions Embedded in Elastomers", Journal of the Mechanics and Physics of Solids, J. Mech. Phys. Solids 200, pp. 106126, (2025).
  • H. Lee, M.K. Dey, K. Karunakaran, R.C. Picu, I. Chasiotis, "An Integrated Experimental-Computational Investigation of the Mechanical Behavior of Random Nanofiber Networks." Soft Matter 21, pp. 1841-1848, (2025). [Article featured on the front journal cover.]
  • K.M. Chang, D. Das, L. Salvati III, L. M. Dean, R. Keshari, M. Garg, D. D. Dlott, I. Chasiotis, N. R. Sottos, "Durable and impact-resistant thermoset polymers for the extreme environment of low Earth orbit." Extreme Mechanics Letters 64, pp. 102089, (2023).
  • O.E. Moronkeji, D. Das, S. Lee, K.M. Chang, and I. Chasiotis, "Local electrical conductivity of carbon black/PDMS nanocomposites subjected to large deformations." Journal of Composite Materials 57 (4), pp. 507-519, (2023).
  • F. Yang, D. Das, K. Karunakaran, S. Thomopoulos, G.M. Genin and I. Chasiotis, "In vitro Time Dependent Mechanical Behavior of Reconstituted Mammalian Collagen Fibrils." Acta Biomaterialia, 163, pp. 63-77, (2023).
  • F. Yang, D. Das and I. Chasiotis, "Effect of Strain Rate on Mechanical Behavior of Collagen Fibrils". Applied Physics Letters 120, p. 114101 (2022).
  • F. Yang, D. Das and I. Chasiotis, "Microscale Creep and Stress Relaxation Experiments with Individual Collagen Fibrils". Optics and Lasers in Engineering 150, pp. 106869, (2022).
  • K-K. Hung and I. Chasiotis, Control of Surface Wrinkling through Compliant Nanostructured Interfaces, Advanced Materials Interfaces 9 (3), p. 2101583, (2021).
  • D. Das and I. Chasiotis, "Rate Dependent Adhesion of Nanoscale Polymer Contacts". Journal of the Mechanics and Physics of Solids 156, pp. 104597, (2021).
  • K-K. Hung and I. Chasiotis, "Control of Substrate Strain Transfer to Thin Film Photovoltaics via Interface Design". Solar Energy 255, pp. 643-655, (2021).
  • D. Das, I. Chasiotis, "Sliding of Adhesive Nanoscale Polymer Contacts". Journal of the Mechanics and Physics of Solids 140, pp. 103931, (2020).
  • K. Sahin, J. K. Clawson, J. Singletary, I. Chasiotis, "Shear Strength of Homopolymer and Copolymer Aramid Fibers". Polymer 186, pp. 122034, (2020).
  • D. Antartis, H. Wang, J. Wang, S. J. Dillon, H.B. Chew, I. Chasiotis, "Chemical Lithiation of Individual Columnar and Helical Si Nanostructures with Hierarchical Structure". ACS Applied Materials and Interfaces 11, pp. 11715-11721, (2019).
  • J. Liu, D. Das, Y. Fan, A. Schwartz, S. Thomopoulos, G.M. Genin and I. Chasiotis, "Energy Dissipation in Mammalian Collagen Fibrils: Cyclic Strain-induced Damping, Toughening, and Strengthening". Acta Biomaterialia 80, pp. 217-227, (2018).
  • K. Sahin, J. K. Clawson, S. Horner, J. Zheng, J. Singletary, A. Pelegri, I. Chasiotis, "Limiting Orientation Effects on Modulus and Strength of Aramid Fibers". Polymer 140, pp. 96-106, (2018).
  • J. F. Gonzalez, D. Antartis, M. Martinez, S. J. Dillon, I. Chasiotis and J. Lambros, "Three-Dimensional Study of Graphite-Composite Electrode Chemo-Mechanical Response using Digital Volume Correlation". Experimental Mechanics 58(4), 573-583, (2018).
  • J. F. Gonzalez, D. Antartis, I. Chasiotis, S.J. Dillon, J. Lambros, "In-situ X-ray Micro-CT Characterization of Chemo-Mechanical Relaxations during Sn Lithiation". Journal of Power Sources 381, pp. 181-189, (2018).
  • D. Antartis, I. Chasiotis, "Individual Helical Nanostructures for Ultra-compliant Interfaces". Materials and Design 144, pp. 182-191, (2018).
  • D. Antartis, R. Mott, D. Das, D. Shaddock, I. Chasiotis, "Cu Nanospring Films for Advanced Nanothermal Interfaces", Advanced Engineering Materials 20(3), pp. 1700910(1-6), (2018).
  • D. Antartis, R. Mott, I. Chasiotis, "Si Nanospring Films for Compliant Interfaces". Journal of Materials Science 53(8), pp. 5826-5844, (2018).
  • D. Das, L. Sanchez, J. Martin, B. Power, S. Isaacson, R.G. Polcawich, I. Chasiotis, "Control of ferroelectric and linear piezoelectric response of PZT films through texture". Journal of the American Ceramics Society 101, pp. 2965-2975, (2018).
  • D. Das, L. Sanchez, J. Martin, B. Power, S. Isaacson, R.G. Polcawich, I. Chasiotis, ?Control of the Mechanical Response of Freestanding of PbZr0.52Ti0.48O3 (PZT) Films through Texture?, Applied Physics Letters 109, pp. 131905, (2016).
  • D. Das, B. Power, J.P. Martin, R.G. Polcawich, I. Chasiotis, ?Role of Seed Layer in the Inelastic Response of Epitaxially Grown Textured Metal Films?, Acta Materialia 112, pp. 390-402, (2016).
  • P.V. Kolluru, I. Chasiotis, ?A master curve for the size and strain rate dependent large deformation behavior of PS nanofibers at room temperature?, Polymer 99, pp. 544-551, (2016).
  • N. Karanjgaokar, I. Chasiotis, ?Creep behavior of nanocrystalline Au films as a function of temperature?, Journal of Materials Science 51, pp. 3701-3714, (2016).
  • H. G. Chae, B. A. Newcomb, P. V. Gulgunje, Y. Liu, K. K. Gupta, M. G. Kamath, K. M. Lyons, S. Ghoshal, C. P., L. Giannuzzi, K. Sahin, I. Chasiotis, S. Kumar, ?High Strength and High Modulus Carbon Fibers?, Carbon 93, pp. 81-87, (2015).
  • J. Gonzalez, K. Sun, M. Huang, S. Dillon, I. Chasiotis, and J. Lambros, ?X-ray microtomography characterization of Sn particle evolution during lithiation/delithiation in lithium ion batteries?, Journal of Power Sources 285, pp. 205?209, (2015).
  • S. Yagnamurthy, B. Boyce and I. Chasiotis, ?Role of Microstructure and Doping on the Mechanical Strength and Toughness of Polysilicon Thin Films?, Journal of Microelectromechanical Systems 24 (5), pp. 1436 - 1452, (2015).
  • D. Antartis, S. Dillon, I. Chasiotis, ?Effect of Porosity in Electrochemical and Mechanical Properties of Composite Li-ion Anodes?, Journal of Composite Materials, pp. 1-14, DOI: 10.1177/0021998314568653, (2015).
  • K. Şahin, N.A. Fasanella, P.V. Kolluru, I. Chasiotis, ?Mechanical Property Experiments with Ultra-High Strength Micrometer Scale Fibers?, Experimental Mechanics 55 (5) pp. 877-885, (2015).
  • P.V. Kolluru, I. Chasiotis, ?Interplay of Molecular and Specimen Length Scales in the Large Deformation Mechanical Behavior of Polystyrene Nanofibers?, Polymer 56, pp. 507-515, (2015).
  • J. Gonzalez, K. Sun, M. Huang, J. Lambros, S. Dillon, I. Chasiotis, ?Three dimensional studies of particle failure in silicon based composite electrodes for lithium ion batteries?, Journal of Power Sources 269, pp. 334-343, (2014).
  • K. Sahin, N.A. Fasanella, I. Chasiotis, K.M. Lyons, B.A. Newcomb, M.G. Kamath, H.G. Chae, S. Kumar, "High strength micron size carbon fibers from polyacrylonitrile carbon nanotube precursors", Carbon 77, pp. 442-453 (2014).
  • D. Antartis and I. Chasiotis, "Residual Stress and Mechanical Property Measurements in Amorphous Si Photovoltaic Thin Films". Solar Energy 105, pp. 694-704, (2014).
  • T. Ozkan, D. Shaddock, D.M. Lipkin, and I. Chasiotis, "Mechanical strengthening, stiffening, and oxidation behavior of pentatwinned Cu nanowires at near ambient temperatures". Materials Research Express 1, pp. 035020-1 - 18, (2014).
  • M. Naraghi, P.V. Kolluru, and I. Chasiotis, Invited: ?Time and Strain Rate Dependent Mechanical Behavior of Polymeric Nanofibers?, Journal of the Mechanics and Physics of Solids 62, pp. 257?275, (2014).
  • P. V. Kolluru, J. Lipner, L. Wenying, Y. Xia, S. Thomopoulos, G.M. Genin and I. Chasiotis, ?Strong and Tough Mineralized PLGA Nanofibers for Tendon-to-bone Scaffolds?, Acta Biomaterialia 9, pp. 9442?9450, (2013).
  • S. Yagnamurthy, Q. Chen, C. Chen, and I. Chasiotis, ?Erosion Rates of Epoxy-Silica Nanocomposites at the Lower Earth Orbit Environment of the International Space Station?, Journal of Composite Materials 47 (1), pp. 107-117, (2013).
  • N. Karanjgaokar, F. Stump, P. Geubelle, and I. Chasiotis, ?A Thermally Activated Model for Room Temperature Creep in Nanocrystalline Au Films at Intermediate Stresses?, Scripta Materialia, 68 (8), pp. 551-554, (2013).
  • K. Hanschmidt, T. T?e, I. Hussainova, M. Part, H. M?ar, K. Roosalu, I. Chasiotis, ?Optimization of Mechanical Strength of Titania Microfibers Fabricated by Direct Drawing?, Applied Physics A: Materials Science and Processing 113(3), pp. 663-671, (2013).
  • T. Ozkan, Q. Chen, and I. Chasiotis, ?Interfacial Strength and Fracture Energy of Individual Carbon Nanofibersin Epoxy Matrix as a Function of Surface Conditions?, Composites Science and Technology 72, pp. 965-975, (2012).
  • N. Karanjgaokar, C. Oh, J. Lambros, and I. Chasiotis, ?Temperature and Strain Rate Effects on the Mechanical Behavior of Nanocrystalline Au Thin Films?, Acta Materialia 60, pp. 5352?5361, (2012).
  • F.V. Stump, N. Karanjgaokar, P.H. Geubelle, and I. Chasiotis, ?A Multiscale Model of Rate Dependence of Nanocrystalline Thin Films?, Journal for Multiscale Computational Engineering 10 (5), pp 441?459, (2012).
  • S. Yagnamurthy, I. Chasiotis, J. Lambros, R. Polcawich, J. Pulskamp, M. Dubey, ?Mechanical and Ferroelectric Behavior of PZT Thin Films,? Journal of Microelectromechanical Systems 20, pp. 1250-1258, (2011).
  • L. Sun, N. Karanjgaokar, K. Sun, I. Chasiotis, W.C. Carter, and S. Dillon, ?High-Strength All-Solid Lithium Ion Electrodes Based on Li4Ti5O12?, Journal of Power Sources 196, pp. 6507?6511, (2011).
  • M. Naraghi, S. Arshad, and I. Chasiotis, ?Molecular Orientation and Mechanical Property Size Effects in Electrospun Polyacrylonitrile Nanofibers?, Polymer 52, pp. 1612-1618, (2011).
  • S.N. Arshad, M. Naraghi, I. Chasiotis, ?Strong Carbon Nanofibers from Electrospun Polyacrylonitrile?, Carbon 49, pp. 1710-1719, (2011).
  • N. Karanjgaokar, C. Oh, and I. Chasiotis, ?Microscale Experiments at Elevated Temperatures Evaluated with Digital Image Correlation?, Experimental Mechanics 51, pp. 609-618, (2011).
  • M. Naraghi, T. Ozkan, I. Chasiotis, S. S. Hazra, and M. P. de Boer ?MEMS platform for on-chip nanomechanical experiments with strong and highly ductile nanofibers?, Journal of Micromechanics and Microengineering 20, pp. 125022-1-9, (2010).
  • K. Jonnalagadda, N. Karanjgaokar, I. Chasiotis, J. Chee, and D. Peroulis, ?Strain Rate Sensitivity of Nanocrystalline Au Films at Room Temperature?, Acta Materialia 58, pp. 4674-4684, (2010).
  • J. Kimberley, J. Lambros, I. Chasiotis, R. Polcawich, J. Pulskamp, and M. Dubey, ?Mechanics of energy transfer and failure of ductile microbeams subjected to dynamic loading?, Journal of the Mechanics and Physics of Solids 58, pp. 1125?1138, (2010).
  • T. Ozkan, M. Naraghi, and I. Chasiotis, ?Mechanical Properties of Vapor Grown Carbon Nanofibers,? Carbon 48, pp. 239-244, (2010).
  • K. Jonnalagadda, I. Chasiotis, J. Lambros, R. Polcawich, J. Pulskamp, and M. Dubey, ?Experimental Investigation of Strain Rate Dependence in Nanocrystalline Pt Films,? Experimental Mechanics 50 (1), pp. 25-35, (2010).
  • X. Li, I. Chasiotis, Takayuki Kitamura, ?In situ Scanning Probe Microscopy Nanomechanical Testing?, MRS Bulletin, 35(5), pp. 361-367,(2010).
  • M. Naraghi and I. Chasiotis, ?Optimization of Comb-driven Devices for Mechanical Testing of Polymeric Nanofibers Subjected to Large Deformations? Journal of Microelectromechanical Systems 18 (5), pp. 1032-1046, (2009).
  • J. Kimberley, R.S. Cooney, J. Lambros, I. Chasiotis, and Barker N.S., ?Failure of Au RF-MEMS Switches Subjected to Dynamic Loading?, Sensors and Actuators A: Physical 154, pp. 140-148, (2009).
  • J. Kimberley, J. Lambros, I. Chasiotis, R. Polcawich, J. Pulskamp, and M. Dubey, ?A hybrid experimental/numerical investigation of the response of multilayered MEMS devices to dynamic loading,? Experimental Mechanics 50 (4), pp. 527-544, (2010).
  • K. Jonnalagadda, I. Chasiotis, J. Lambros, R. Polcawich, J. Pulskamp, and M. Dubey, ?Experimental Investigation of Strain Rate Dependence in Nanocrystalline Pt Films,? Experimental Mechanics 50 (1), pp. 25-35, (2010).
  • I. Chasiotis, Editorial: ?Experimental Mechanics at the Nanoscale: At Crossroads, and Across Disciplines,? Strain 44 (2), pp. 131-132, (2008).
  • B.L. Boyce, R. Ballarini, and I. Chasiotis, ?An Argument for Proof Testing Brittle Microsystems in High-reliability Applications,? Journal of Micromechanics and Microengineering 18, pp. 117001-4, (2008).
  • Q. Chen, I. Chasiotis, C. Chen, and A. Roy, ?Nanoscale and Effective Mechanical Behavior and Fracture of Silica Nanocomposites,? Composites Science and Technology 68 (15-16), pp. 3137-3144, (2008).
  • K. Jonnalagadda, S. Cho, I. Chasiotis, T.A. Friedman, and J. Sullivan, ?Effect of Intrinsic Stress Gradient on the Effective Mode-I Fracture Toughness of Amorphous Diamond-like Carbon Films for MEMS,? Journal of the Mechanics and Physics of Solids 56, pp. 388-401, (2008).
  • I. Chasiotis, Editorial: ?Nanoscale Measurements in Mechanics,? Experimental Mechanics 47 (1), pp. 5-6, (2007).
  • M. Naraghi, I. Chasiotis, Y. Dzenis, Y. Wen, and H. Kahn, ?Novel Method for Mechanical Characterization of Polymeric Nanofibers?, Review of Scientific Instruments 78, pp. 085108 (1-7), (2007).
  • J. Kimberley, I. Chasiotis, and J. Lambros, ?Failure of Microelectromechanical Systems Subjected to Impulse Loads?, International Journal of Solids and Structures 45, pp. 497-512, (2007).
  • M. Naraghi, I. Chasiotis, Y. Dzenis, Y. Wen, H. Kahn, ?Mechanical deformation and failure of electrospun polyacrylonitrile nanofibers as a function of strain rate?, Applied Physics Letters 91, pp. 151901 (1-3), (2007).
  • J.R. Stanec, C.H. Smith III, I. Chasiotis, and N.S. Barker, ?Realization of Low-Stress Au Cantilever Beams,? Journal of Micromechanics and Microengineering, 17, pp. N7-N10, (2007).
  • S.W. Cho K. Jonnalagadda, and I. Chasiotis, (Invited) ?Mode I and Mixed Mode Fracture of Polysilicon for MEMS,? Fatigue and Fracture of Engineering Materials and Structures 30 (1), pp. 21-31, (2007).
  • S.W. Cho and I. Chasiotis, ?Elastic Properties and Representative Volume Element of Polycrystalline Silicon for MEMS,? Experimental Mechanics 47 (1), pp. 37-49, (2007).
  • I. Chasiotis, C. Bateson, K. Timpano, A. McCarty, N. S. Barker, J. Stanec, "Strain Rate Effects on the Mechanical Behavior of Nanocrystalline Au Films," Thin Solid Films 515, pp. 3183-3189, (2007).
  • A. McCarty and I. Chasiotis, ?Description of Brittle Failure of Non-uniform MEMS Geometries?, Thin Solid Films 515, pp. 3267-3276, (2007).
  • I. Chasiotis, S.W. Cho, K. Jonnalagadda, ?Fracture Toughness and Crack Growth in Polycrystalline Silicon?, Journal of Applied Mechanics 73 (5), pp. 714-722, (2006).
  • I. Chasiotis, Q. Chen, G. Odegard, and T. Gates, ?Structure-Properties Relationships in Graphite Platelet-Reinforced Polymer Composites?, Experimental Mechanics 45 (6), pp. 507-516, (2005).
  • S. Cho, J.F. C?enas-Garc? and I. Chasiotis, ?Nano-displacement Based Microscopic Hole Method for Determination of Thin Film Properties?, Sensors and Actuators A Physical 120, pp. 163-171, (2005).
  • H. Kahn, C. Deeb, I. Chasiotis, and A.H. Heuer, ?Anodic oxidation during MEMS processing of silicon and polysilicon: native oxides can be thicker than you think,? Journal of Microelectromechanical Systems 14 (5), pp. 914-923, (2005).
  • S.W. Cho and I. Chasiotis, T.A. Friedman, and J. Sullivan, ?Direct Measurements of Young?s Modulus, Poisson?s Ratio and Failure Properties of ta-C MEMS?, Journal of Micromechanics and Microengineering 15 (4), pp. 728-735, (2005).
  • I. Chasiotis, Invited Paper: ?Mechanics of Thin Films and Microdevices?, IEEE Transactions of Devices, Materials, and Reliability 4 (2), pp. 176-188, (2004).
  • W.G. Knauss, I. Chasiotis, Y. Huang, ?Mechanical Measurements at the Micron and Nanometer Scales?, Mechanics of Materials 35 (3-6), pp. 217-231, (2003).
  • I. Chasiotis, W.G. Knauss, ?The Mechanical Strength of Polysilicon Films: 2. Size Effects Associated with Elliptical and Circular Perforations?, J. of the Mechanics and Physics of Solids 51, pp. 1551-1572, (2003).
  • I. Chasiotis, W.G. Knauss, ?The Mechanical Strength of Polysilicon Films: 1. The Influence of Fabrication Governed Surface Conditions?, J. of the Mechanics and Physics of Solids 51, pp. 1533-1550, (2003).
  • H.L. Fillmore, I. Chasiotis, S.W. Cho, and G.T. Gillies, ?AFM Observations of Tumor Cell Invadopodia: Novel Cellular Nanomorphologies on Collagen Substrates?, Nanotechnology 14 (1), pp. 73-76, (2003).
  • I. Chasiotis, H.L. Fillmore, and G.T. Gillies, ?AFM measurement of cytostructural elements involved in the nanodynamics of tumor cell invasion?, Nanotechnology 14 (5), pp. 557-561, (2003).
  • I. Chasiotis, W.G. Knauss, ?A New Microtensile Tester for the Study of MEMS Materials with the aid of Atomic Force Microscopy?, Experimental Mechanics 42 (1), pp. 51-57, (2002).

Research Honors

  • Fellow of the American Academy of Mechanics (AAM) (2024)
  • F.G. Tatnall Award (2021)
  • Caterpillar Professor of Engineering (2020)
  • University of Illinois Scholar (2016)
  • Fellow of the American Society for Mechanical Engineers (2015)
  • A.J. Durelli Award (2013)
  • M. Het?i Award for Best Research Paper published in 2010 in the journal Experimental Mechanics (2012)
  • ASME Thomas J.R. Hughes Young Investigator Award (2011)
  • Journal of Strain Analysis Young Investigator Lecture (2011)
  • Society of Engineering Science Young Investigator Medal (2010)
  • Xerox Award for Faculty Research (2010)
  • Presidential Early Career Award for Scientists and Engineers (PECASE) (2010)
  • Willett Faculty Scholar of Engineering (2009)
  • National Science Foundation (NSF) CAREER Award (2008)
  • Xerox Award for Faculty Research (2007)
  • Office of Naval Research Young Investigator Award (2007)

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