Publications


Books/Book Chapters

2. J. Rajagopalan, Microelectromechanical Systems (MEMS)-Based Testing of Materials. In: Hsueh CH. et al. (eds) Handbook of Mechanics of Materials. Springer, Singapore (2018)

1. W. W. Ahmed, J. Rajagopalan, A. Tofangchi and M. T. A. Saif, “Neuromechanics: The role of tension in neuronal growth and memory,” in Nano and Cell Mechanics (Eds. Horacio Espinosa and Gang Bao), John Wiley and Sons, 2013

Patents/Invention Disclosures

3. J. Rajagopalan, R. Berlia and E. Izadi, “Metallic films with precisely engineered multimodal architectures,” Invention Disclosure, ID M17-135P, 2017.

2. Rajagopalan and R. Sarkar, “Systems and methods for tailored microstructures using templated grain nucleation,” US Patent Application, Serial Number: 15/458,693, 2017.

1. J. Rajagopalan, M. T. A. Saif, “High aspect ratio polymer elongate and one-dimensional microstructure fabrication,” US Patent Application, Serial Number: 14/068,224, 2013.

Journal Articles

25. E. Izadi and J. Rajagopalan, “Strain rate dependence of cyclic deformation response in ultrafine-grained Al films with different textures,” (to be submitted).

24. R. Sarkar and J. Rajagopalan, “Synthesis of thin films with highly tailored microstructures,” Materials Research Letters 6, 398-405, 2018 (pdf).

23. E. Izadi, S. Opie, H. Lim, P. Peralta and J. Rajagopalan, “Effect of plastic anisotropy on the deformation behavior of bicrystalline aluminum films – experiments and modeling,” Acta Materialia 142, 58-70, 2018 (pdf).

22. R. Vallabhaneni, E. Izadi, C.R. Mayer, C.S. Kaira, S.S. Singh, J. Rajagopalan and N. Chawla*, “In situ tensile testing of tin (Sn) whiskers in a Focused Ion Beam (FIB)/Scanning Electron Microscope (SEM),” Microelectronics Reliability 79, 314-320, 2017 (pdf).

21. E. Izadi, A. Darbal, R. Sarkar, J. Rajagopalan, “Grain rotations in ultrafine-grained aluminum films studied using in situ TEM straining with automated crystal orientation mapping,” Materials and Design 113, 186–194, 2017 (pdf).

20. R. Sarkar, C. Ebner, I. Izadi, C. Rentenberger, and J. Rajagopalan, “Revealing anelasticity and structural rearrangements in nanoscale metallic glass films using in situ TEM diffraction,” Materials Research Letters 5, 135-143, 2017 (pdf).

19. T. W. Sowers, R. Sarkar, S. E. Prameela, E. Izadi and J. Rajagopalan, “Capillary driven flow of polydimethylsiloxane in open rectangular micro channels,” Soft Matter 12, 5818-5823, 2016 (pdf).

18. C. Ebner, R. Sarkar, J. Rajagopalan, and C. Rentenberger, “Local, atomic-­level elastic strain measurements of metallic glass thin films by electron diffraction,” Ultramicroscopy 165, 51–58, 2016 (pdf).

17. E. Izadi and J. Rajagopalan, “Texture dependent strain rate sensitivity of ultrafine-grained aluminum films,” Scripta Materialia 114, 65-69, 2016 (pdf).

16. R. Sarkar, C. Rentenberger and J. Rajagopalan, “Electron beam induced artifacts during in situ TEM deformation of nanostructured metals,” Scientific Reports 5, 16345, 2015 (pdf).

15. S. Singh, R. Sarkar, H.-X. Xie, C. Mayer, J. Rajagopalan, and N. Chawla, “Tensile behavior of single-crystal tin whiskers,” Journal of Electronic Materials 43, 978-982, 2014 (pdf)

14. B. J. Williams, S. A. Anand, J. Rajagopalan and M. T. A. Saif, “A self-propelled biohybrid swimmer at low Reynolds number,” Nature Communications 5, 3081, 2014 (pdf)

13. J. Rajagopalan and M. T. A. Saif, “Fabrication of freestanding 1-D PDMS microstructures using capillary micromolding,” Journal of Microelectromechanical Systems 22, 992-994, 2013 (pdf)

12. J. Rajagopalan and M. T. A. Saif, “Effect of microstructural heterogeneity on the mechanical behavior of nanocrystalline metal films,” Journal of Materials Research 26, 2826-2832, 2011 (pdf)

11. J. Rajagopalan and M. T. A. Saif, “MEMS sensors and microsystems for cell mechano-biology,” Journal of Micromechanics and Microengineering 21, 054002, 2011 (pdf)

10.  J. Rajagopalan, A. Tofangchi and M. T. A. Saif, “Linear, high-resolution bioMEMS force sensors with large measurement range,” Journal of Microelectromechanical Systems 19, 1380-1389, 2010 (pdf)

9. W. Kang, J. Rajagopalan and M. T. A. Saif, “In situ uniaxial mechanical testing of small scale materials – a review,” Nanoscience and Nanotechnology Letters 2, 282-287, 2010 (pdf)

8. J. Rajagopalan, A. Tofangchi and M. T. A. Saif, “Drosophila neurons actively regulate axonal tension in vivo,” Biophysical Journal 99, 3208-3215, 2010 (pdf)

7. J. Rajagopalan, C. Rentenberger, P. H. Karnthaler, G. Dehm and M. T. A. Saif, “In situ TEM study of microplasticity and Bauschinger effect in nanocrystalline metals,” Acta Materialia 58, 4772-4782, 2010 (pdf)

6. J. Rajagopalan, J. H. Han and M. T. A. Saif, “On plastic strain recovery in freestanding nanocrystalline metal thin films,” Scripta Materialia 59, 921-926, 2008 (pdf)

5. J. Rajagopalan, J. H. Han and M. T. A. Saif, “Bauschinger effect in unpassivated freestanding nanoscale metal films,” Scripta Materialia 59, 734-737, 2008 (pdf)

4. J. Rajagopalan, J. H. Han, and M. T. A. Saif, “Plastic deformation recovery in freestanding nanocrystalline aluminum and gold thin films,” Science 315, 1831-1834, 2007 (pdf)

3. J. Rajagopalan and M. T. A. Saif, “A single degree of freedom model for thermoelastic damping,” Journal of Applied Mechanics 74, 461-468, 2007 (pdf)

2. J. Rajagopalan, K. Balasubramaniam and C. V. Krishnamurthy, “A phase reconstruction algorithm for Lamb wave based structural health monitoring of anisotropic multilayered composite plates,” Journal of the Acoustical Society of America 119, 872-878, 2006 (pdf)

1. J. Rajagopalan, K. Balasubramaniam and C. V. Krishnamurthy, “A single transmitter multi receiver (STMR) PZT array for guided ultrasonic wave based structural health monitoring of large isotropic plate structures,” Smart Materials and Structures 15, 1190-1196, 2006 (pdf)

Conference Proceedings

13. E. Izadi, P. Peralta and J. Rajagopalan, “In situ TEM investigation of the deformation mechanisms and microstructural changes in ultrafine-grained non-textured aluminum film using automated crystal orientation mapping,” Microscopy and Microanalysis 23 (S1), 768-769, 2017.

12. R. Sarkar, C. Ebner, J. Rajagopalan and C. Rentenberger, “In-situ deformation of various micro/nanoscaled samples in the transmission electron microscope: experimental results and pitfalls,” Microscopy and Microanalysis 23 (S1), 762-763, 2017.

11. R. Sarkar, C. Rentenberger and J. Rajagopalan, “Anomalous beam effects during in situ transmission electron microscopy deformation of nanocrystalline and ultrafine-grained metals,” Microscopy and Microanalysis 22 (S3), 1498-1499, 2016.

10. R. Sarkar, C. Ebner, C. Rentenberger and J. Rajagopalan, “De-coupling anelastic and elastic deformation in metallic glass thin films via measurement of micro strain tensors using in situ electron diffraction,” Microscopy and Microanalysis 22 (S3), 524-525, 2016.

9. E. Izadi, A. Darbal, P. Peralta, J. Rajagopalan, “In situ TEM straining of ultrafine-grained aluminum films of different textures using automated crystal orientation mapping,” Microscopy and Microanalysis 22 (S3), 1950-1951, 2016.

8. B. J. Williams, S. A. Anand, J. Rajagopalan and M. T. A. Saif, “A microfabricated, biohybrid, soft robotics flagellum,” IEEE 27th International Conference on Micro Electro Mechanical Systems (MEMS), 192-195, 2014

7. B. J. Williams, S. A. Anand, J. Rajagopalan and M. T. A. Saif, “Artifi cial swimmer powered by cardiomyocytes,” ASME 2013 Summer Bioengineering Conference, V01AT07A027, 2013

6. J. Rajagopalan, A. Tofangchi and M. T. A. Saif, “The role of mechanical tension in neurons,” MRS Symposium Proceedings Vol. 1274, 3-7, 2010 (pdf)

5. J. Rajagopalan, A. Tofangchi and M. T. A. Saif, “Highly linear, ultra sensitive bio-MEMS force sensors with large force measurement range,” IEEE 23rd International Conference on Micro Electro Mechanical Systems (MEMS), 88-91,  2010 (pdf)

4. J. Rajagopalan, J. H. Han and M. T. A. Saif, “Inhomogeneity and size of microstructure – a new paradigm in understanding deformation mechanism of nano grained material,” Proceedings of the 2008 TMS meeting, 201-206, 2008

3. J. Han, J. Rajagopalan, and M. T. A. Saif, “MEMS-Based testing stage to study electrical and mechanical properties of nanocrystalline metal films,” Proceedings of SPIE, Vol. 6464, 64640C , 2007 (pdf)

2. R. Jagannathan, B. V. Somasekhar, K. Balasubramaniam, and C. V. Krishnamurthy, “Plate waves structural health monitoring of composite structures,” Review of Progress in Quantitative Non-Destructive Evaluation 24 (B), 1802-1808, 2005

1. S. Mahadev Prasad, R. Jaganathan, K Balasubramaniam, and C. V. Krishnamurthy, “Structural health monitoring of anisotropic layered composite plates using guided ultrasonic Lamb wave data,” Review of Progress in Quantitative Non-Destructive Evaluation 23 (B), 1460-1467, 2003

 

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