Google scholar link: https://scholar.google.co.in/citations?user=uKDjckkAAAAJ&hl=en&oi=ao

Journal Publications

34. S. Sachan and S. Ramamoorthy, "Characterization of rigid open-cell foams using direct ultrasonic simulation"  Journal of the Acoustical Society of America, 2024 (accepted).

33. S. Sachan and S. Ramamoorthy, "Microstructure-based modeling to characterize low pore density open-cell foams and its experimental validation,"  Journal of the Acoustical Society of America, 155, pages 188-205, 2024.

32. B. Rutuja, A. Singh, S. Ramamoorthy, S. Krishnan, "Heat transfer analysis of a combined piezoelectric fan - translational agitator cooling system", Journal of Enhanced Heat Transfer, 31(4), pages 71-93, 2024.

31. A. Wagh, C. P. Singh, S. Ramamoorthy, S. Krishnan, "Effective thermal conductivity of composite strut-based hollow periodic cellular solids", Thermal Science and Engineering Progress, 43, 102003, 2023.

30. S. Kumar, S. Ramamoorthy, S. Krishnan, "Application of Lévêque Analogy to Open Cellular Porous Materials", IEEE Transactions on Components, Packaging and Manufacturing Technology, 13(8), 1096-1103, 2023.

29. H. Ronge, S. Upalkar, A. Wagh, S. Krishnan, S. Ramamoorthy, "Evaluations of corrugated macro-structure porous heat sinks for the combined heat dissipation and noise reduction performance", International Journal of Thermal Sciences, 187, 108157, 2023.

28. A. Wagh, S. Deshmukh, S. Ramamoorthy, S. Krishnan, "Effect of material distribution in the unit cell on effective thermal conductivity and Young's modulus of cellular structure", Journal of Applied Mechanics, 90(1), 011008, 2023.

27. H. Ronge, S. Upalkar, A. Wagh, R. Choudhary, S. Krishnan, S. Ramamoorthy, "A model for sound propagation through corrugated structures with mean flow", Journal of Vibrations and Acoustics, 145(2), 021007, 2023.

26. N. Suryakant, A. Singh, R. Ramdas, K. Dighe, and S. Ramamoorthy, "Enhanced absorption in structural acoustic silencers using piezo-shunting", Journal of the Acoustical Society of America, 152 (2), pages 1112-1122, 2022.

25. S. Deshmukh, S. Kumar, A. Wagh, S. Krishnan, and S. Ramamoorthy, "Selection of periodic cellular structures for multifunctional applications directly based on their unit cell geometry", International Journal of Mechanical Sciences, 107133, 2022.

24. S. Ramamoorthy and S. Krishnan, " Evaluation of porous materials for combined thermal and acoustic insulation”, Journal of the Acoustical Society of India, 48(3), pages 141-151, 2021 .

23. S. Sachan, S. Kumar, S. Krishnan, and S. Ramamoorthy, "Impact of entry-exit loss on the measurement of flow-resistivity of porous materials", AIP Advances, 10 (10), 105031, 2020.

22. N. Agarwal and S. Ramamoorthy, "Balance in the feedback loop components of the mammalian cochlear amplifier", Journal of Applied Physics, 128(3), 034701, 2020.

21. R. Ramdas, N. Agarwal, M. Atpadikar, S. Ramamoorthy, "Simultaneous measurement of vibration and pressure in vibroacoustic microchannels", Applied Acoustics, Volume 169, 107489, 2020.

20. S. Deshmukh, A. Borkar, A. Alankar, S. Krishnan, S. Ramamoorthy, "A priori determination of the elastic and acoustic responses of periodic poroelastic materials", Applied Acoustics, Volume  169, 107455, 2020.

19. H. Ronge, S. Krishnan, S. Ramamoorthy, "Evaluation of stochastic and periodic cellular materials for combined heat dissipation and noise reduction: Experiments and modeling", IEEE Transactions on Components, Packaging and Manufacturing Technology, vol. 10, no. 7, pp. 1185-1203, 2020.

18. R. Choudhary, S. Sachan, S. Krishnan, S. Ramamoorthy, "Design and parametric study of macro-structure of foams for combined high absorption and low pressure drop", Applied Acoustics, Volume 166, 107358, 2020 

17. S. Deshmukh, H. Ronge, S. Ramamoorthy, "Design of periodic foam structures for acoustic applications: concept, parametric study, and experimental validation", Materials & Design, 175, p. 107830, 2019 

16. A. Nuttall, A. Ricci, G. Burwood, J. Harte, S. Stenfelt, P. Thomasen, T. Ren, S. Ramamoorthy, Y. Zhang, T. Wilson, T. Lunner, B. Moore, and A. Fridberger, "A mechanoelectrical mechanism for detection of sound envelopes in the hearing organ," Nature Communications, 9(1), 4175, 2018

15.  S. Ramamoorthy and S. Krishnan, "Towards Thermal-Acoustic Co-Design of Noise-Reducing Heat Sinks," IEEE Transactions on Components, Packaging and Manufacturing Technology, 8(8), pages 1411-1419, 2018

14. R. L. Warren*, S. Ramamoorthy*, N. Ciganović, Y. Zhang, T. M. Wilson, T. Petrie, R. K. Wang, S. L. Jacques, T. Reichenbach, A. L. Nuttall, and A. Fridberger, “Minimal basilar membrane motion in low-frequency hearing”, Proceedings of the National Academy of Sciences, 201606317, 2016 (*equal contribution)

13. S. Ramamoorthy, Y. Zhang, T. Petrie, A. Fridberger, T. Ren, R. K. Wang, S. L. Jacques, and A. L. Nuttall, “Minimally invasive surgical method to detect sound processing in the cochlear apex by optical coherence tomography”, Journal of Biomedical Optics, 21(2), 025003-025003, 2016.

12.  T. Wu, S. Ramamoorthy, T. Wilson, F. Chen, E. Porsov, H. Subhash, S. Foster, Y. Zhang, I. Omelchenko, M. Bateschell, L. Wang, J. V. Brigande, Z. G. Jiang, T. Mao, and A. L. Nuttall, “Optogenetic control of mouse outer hair cells", Biophysical Journal, 110(2), pages 493-502, 2016.

11.  S. Ramamoorthy, D. Zha, F. Chen, S. Jacques, R. Wang, N. Choudhury, A. L. Nuttall, and A. Fridberger, “Filtering of acoustic signals within the hearing organ”, Journal of Neuroscience, 34(27): 9051-9058, 2014.

10. X. Shi, F. Zhang, Z. Urdang, M. Dai, L. Neng, J. Zhang, S. Ramamoorthy, A. L. Nuttall, “Thin and open vessel-windows for intra-vital fluorescence microscopy imaging of the murine cochlear blood flow”, Hearing Research, 313, pages 38-46, 2014.

9. S. Ramamoorthy, T. Wilson, T. Wu, and A. L. Nuttall. “Non-uniform distribution of outer hair cell transmembrane potential induced by extracellular electric field”, Biophysical Journal, 105 (12), pages 2666-2675, 2013.

8.  S. Ramamoorthy and A. L. Nuttall. “Half-octave shift in mammalian hearing is an epiphenomenon of the cochlear amplifier”, PLoS ONE 7(9): e45640, 2012.

7.    D. Zha, F. Chen, S. Ramamoorthy, A. Fridberger, N. Choudhury, S. L. Jacques, R. Wang, and A. L. Nuttall. “In vivo outer hair cell length changes expose the active process in the cochlea”, PLoS ONE, 7(4): e32757, 2012.

6.    S. Ramamoorthy and A. L. Nuttall. “Outer hair cell somatic electromotility in vivo and power transfer to the organ of Corti”, Biophysical Journal, 102(3), pages 388–398, 2012.

5.  J. Zheng, S. Ramamoorthy, T. Ren, W. He, D. Zha, F. Chen, A. Magnusson, A. L. Nuttall, A. Fridberger. “Persistence of past stimulations: Storing sounds within the inner ear”, Biophysical Journal, 100 (7), pages 1627-1634, 2011.

4. S. Ramamoorthy, D. Zha, and A. L. Nuttall. “The biophysical origin of traveling-wave dispersion in the cochlea”, Biophysical Journal, 99(6), pages 1687-1695, 2010.

3. S. Ramamoorthy, N. Deo and K. Grosh. “A mechano-electro-acoustical model for the cochlea: response to acoustic stimuli”, Journal of the Acoustical Society of America, 121(5), pages 2758-2773, 2007. 

2. S. Ramamoorthy, K. Grosh and T. Nawar. “Structural acoustic silencers – design and experiment”, Journal of the Acoustical Society of America, 114(5), pages 2812-2824, 2003.

1. S. Ramamoorthy, Karl Grosh and John Dodson. “A theoretical study of structural acoustic silencers for hydraulic systems”, Journal of the Acoustical Society of America, 111(5), pages 2097-2108, 2002. 

Patents

3.   S. Ramamoorthy, “An apparatus for reducing broadband noise and harvesting electrical energy therefrom”, Indian patent number 469827, granted 16 November 2023.

2.   S. Ramamoorthy, “System for measuring vibrations of structure and pressure of fluid in vicinity of the structure”, Indian patent  number 517250, granted 29 February 2024.

1.  S. Krishnan and S. Ramamoorthy, “A heat dissipating and noise reducing device”, Indian patent 510453, granted 13 February 2024.


Technical Reports

3.    S. Ramamoorthy. “Numerical modeling of active noise reduction headsets and experimental validation for deterministic design”, Technical report, Bose Corporation (TR08-03), pages 1-75, March 2009.

2.    S. Ramamoorthy. “Longitudinal wave speed in a bi-material structure”, Technical brief, Bose Corporation (TB05-20), pages 1-8, December 2005.

1.    S. Ramamoorthy. “Minimum phase – all pass decomposition: application to wave propagation”, Technical brief, Bose Corporation (TB05-15), pages 1-8, November 2005.   

Conference Proceedings


34. P. Nayak, J. A. Sahebrao, S. Noronha, and S. Ramamoorthy, “Implementation of active feedback noise control in an acoustic cavity mimicking supra-aural headphone”, Presentation at the 50th National Symposium on Acoustics (NSA-2023), Sambalpur, Odisha, February 2023.

33.  D. Verma, P. Rao, and S. Ramamoorthy, “Auditory filter shapes derived from Psychophysical Tuning Curves”, Presentation at the 50th National Symposium on Acoustics (NSA-2023), Sambalpur, Odisha, February 2023.

32. N. Agarwal and S. Ramamoorthy, “Predicting the effect of hearing loss on distortion product otoacoustic emissions in humans”, Presentation at the 50th National Symposium on Acoustics (NSA-2023), Sambalpur, Odisha, February 2023.

31.   R. Ramdas, N. Agarwal, M. Atpadikar, and S. Ramamoorthy. “OCT-based method for the combined measurement of structural vibration and fluid pressure”, Mechanics of Hearing Workshop, July 2022.

30.  N. Agarwal and S. Ramamoorthy. “A nonlinear mechano-electro-acoustic model of the human cochlea”, Mechanics of Hearing Workshop, July 2022.

29. Wagh, A., Ronge, H., Choudhary, R., Krishnan, S., & Ramamoorthy, S. Flow-through Porous Finned Heat Sinks with Helmholtz Resonators for Combined Heat Dissipation and Tonal as well as Broadband Noise Reduction.  2022 28th International Workshop on Thermal Investigations of ICs and Systems (THERMINIC) (pp. 1-4). IEEE, September 2022.

28. Kumar, S., Ramamoorthy, S., & Krishnan, S. Application of Lévêque Analogy to Open Cellular Solids. 2022 28th International Workshop on Thermal Investigations of ICs and Systems (THERMINIC) (pp. 1-4). IEEE, September 2022.

27. H. Ronge, S. Krishnan, and S. Ramamoorthy. “Modeling of sound wave propagation through corrugated macro-geometry arrangement of porous material for combined heat sink and noise reduction applications”, INTER-NOISE AND NOISE-CON congress and conference proceedings, 263(2), pages 4863-4870, 2021.

26. W. Akshay, S. Ramamoorthy, and S. Krishnan. “Effective Thermal Conductivity of Hollow Strut-based Periodic Cellular Solids”, IHMTC2021–527, Proceedings of the 26th National and 4th International ISHMT-ASTFE Heat and Mass Transfer Conference December 2021, IIT Madras, Tamil Nadu, India.

25. S. Kumar, S. Ramamoorthy, and S. Krishnan. “Airflow Study in Metal Foams: Direct Simulation and Experiment”, IHMTC2021–676, Proceedings of the 26th National and 4th International ISHMT-ASTFE Heat and Mass Transfer Conference December 2021, IIT Madras, Tamil Nadu, India.

24. R. Bilaskar, S. Krishnan, and S. Ramamoorthy. “Experimental and Numerical Investigation of a Piezoelectric Air-Mover System for Electronics Cooling”, IHMTC2021–469, Proceedings of the 26th National and 4th International ISHMT-ASTFE Heat and Mass Transfer Conference December 2021, IIT Madras, Tamil Nadu, India.

23. C. Pratap Singh, S. Ramamoorthy, S. Krishnan. “Experimental study of thermal cycling on the permeability of carbon foam”, Indian Chemical Engineering Congress & 74th Annual Session of Indian Institute of Chemical Engineers, Chemcon 2021.

22. S. Deshmukh, A. Borkar, A. Alankar, S. Krishnan, and S. Ramamoorthy, "Towards the design of soft periodic porous structures for acoustic applications", Proceedings of the Symposium on Acoustics of Poro-Elastic Materials (SAPEM) , 29 March - 2 April, 2021 

21. R. H. Bhimrao, S. Krishnan, and S. Ramamoorthy. “Modeling sound wave propagation through corrugated macro-geometry arrangement of porous material for combined heat sink and noise reduction applications”, Proceedings of the 50th International  Congress and Exposition on Noise Control Engineering (INTER-NOISE) , August 1-5, 2021. 

20. R. H. Bhimrao, S. Upalkar, S. Krishnan, and S. Ramamoorthy. “Evaluation of combined thermal acoustic performance of heat sinks with corrugated shape”, Proceedings of the 27th International Conference on Sound and Vibration , July 11-16, 2021. 

19. D. Maslekar, A. Guha and S. Ramamoorthy, "Response of a Vibratory System Under Impact Using Contact Force Models", In: Rao Y.V.D., Amarnath C., Regalla S.P., Javed A., Singh K.K. (eds) Advances in Industrial Machines and Mechanisms. Lecture Notes in Mechanical Engineering. Springer, Singapore, 2021.

18. N. Agarwal, R. Ramdas, and S. Ramamoorthy. “Vibration analysis of air-filled cavity with multiple flexible diaphragms using optical coherence tomography”, NSA-2019 Ravenshaw University, October 17-19, 2019, India.

17. R. Choudhary, S. Sachan, S. Krishnan, and S. Ramamoorthy. “Design of macro-scale structure of foams for combined high absorption and low-pressure drop”, NSA-2019 Ravenshaw University, October 17-19, 2019, India

16. S. Sachan and S. Ramamoorthy. “Role of macro-scale length to unit cell length ratio on homogenization of reticulated porous structures”, NSA-2019 Ravenshaw University, October 17-19, 2019, India.

15. R. H. Bhimrao, S. Krishnan, and S. Ramamoorthy. “Measurement of combined thermal-acoustic performance of noise-reducing heat sinks”, Proceedings of the 13th Western Pacific Acoustic Conference, November 11-15, 2018, New Delhi, India.

14. S. Deshmukh and S. Ramamoorthy. “Design of periodic foam structures based on Johnson-Champoux-Allard model”, Proceedings of the 13th Western Pacific Acoustic Conference, November 11-15, 2018, New Delhi, India.

13. N. Agarwal and S. Ramamoorthy. “Dissecting the cochlear amplifier using a mechanical-electrical-acoustic model of the cochlea”, Proceedings of the 13th Western Pacific Acoustic Conference, November 11-15, 2018, New Delhi, India.

12. R. H. Bhimrao and S. Ramamoorthy. “Structure-borne and fluid-borne wave propagation in the cochlea with round-window stimulation”, Proceedings of the 13th Western Pacific Acoustic Conference, November 11-15, 2018, New Delhi, India.

11. S. Ramamoorthy. “Reverse-engineering the cochlear amplifier”, In AIP Conference Proceedings (Vol. 1965, No. 1, p. 030007), AIP Publishing, 2018.

10. V. Agarwal and S. Ramamoorthy. “Predicting the acoustical characteristics of reticulated periodic foams”, Proc. of the National Symposium on Acoustics, October 28-30, 2017, AMU-Aligarh, India.  

9. S. Deshmukh and S. Ramamoorthy. “Dependence of macro-scale response of fibrous materials on polygonal arrangement of fibers”, Proceedings of the National Symposium on Acoustics, October 28-30, 2017, AMU-Aligarh, India. 

8. S. Ramamoorthy, Y. Zhang, T. C. Petrie, A. Fridberger, T. Ren, R. K. Wang, S. L. Jacques, and A. L. Nuttall. “Two dimensional vibrations of the guinea pig apex organ of Corti measured in vivo using phase sensitive Fourier domain optical coherence tomography”, SPIE BiOS proceedings, 2015.

7. S. Ramamoorthy, Y. Zhang, T. C. Petrie, S. L. Jacques, R. K. Wang, and A. L. Nuttall. “Development of a phase-sensitive Fourier domain optical coherence tomography system to measure mouse organ of Corti vibrations in two cochlear turns”, Mechanics of Hearing proceedings, 2014.

6. S. Ramamoorthy, D. Zha, F. Chen, S. Jacques, R. Wang, N. Choudhury, A. L. Nuttall, and A. Fridberger. “Second filter’s second coming”, Mechanics of Hearing proceedings, 2014. 

5. S. Ramamoorthy, Y. Zhang, T. C. Petrie, F. Chen, H. M. Subhash, N. Choudhury, R. K. Wang, S. L. Jacques, and A. L. Nuttall. “Measurement of in vivo basal-turn vibrations of the organ of Corti using phase-sensitive Fourier domain optical coherence tomography”, SPIE BiOS proceedings, 2013.  

4. S. L. Jacques, S. Ramamoorthy, T. C. Petrie, A. L. Nuttall. “A concise algorithm for detection of vibration from Fourier domain OCT”, SPIE BiOS proceedings, 2013.

3. T. C. Petrie, S. Ramamoorthy, H. M. Subhash, R. K. Wang, A. L. Nuttall, S. L. Jacques. “OCT otoscope for assessment of conductive hearing loss”, SPIE BiOS proceedings, 2013. 

2. S. Ramamoorthy and A. L. Nuttall. “Outer hair cell electromotility in vivo”, What Fire is in Mine Ears: Progress in Auditory Biomechanics (Shera, C.A. & Olson, E.S., eds.), AIP conference proceedings, Williamstown MA, pages 176-178, 2011.

1. K. Grosh, N. Deo, L. Cheng, S. Ramamoorthy. “A mechanical-electrical-acoustic model of the cochlea”, Auditory Mechanisms: Processes and Models, World Scientific, New Jersey, page 410-416, 2006. 

Conference Abstracts (since 2021)