Carnegie Mellon University

Publications

2026

Chaddha, K., Bartlett, M., Cohen-Karni, T., & Gurkar, A. (2026). From aging biology to cardiac biotechnology: emerging platforms for modeling cardiac aging. JCI Insight, 11(15). https://doi.org/10.1172/jci.insight.203447

Kim, C., Kim, M., Cao, H., Hsieh, T., Zhang, Y. J., Cohen-Karni, T., & Webster-Wood, V. (2026). Predicting Macroscopic Axon Topology from Microscopic Kinematics: An Interactive Tracking and Random Walk Pipeline for Substrate-Dependent Cortical Neurospheres. bioRxiv. https://doi.org/10.64898/2026.07.30.741748

Gershanok, S., Behre, A., Jin, R., Vinokurova, S., Blount, J., Garg, R., Ersoz, A., Wang, L., Seonghan Jo, Ranke, D., Kulkarni, M., Cohen-Karni, D., Feinberg, A. W., Weber, D., Brown, B., & Cohen-Karni, T. (2026). Early electrical stimulation promotes functional recovery after volumetric muscle loss. bioRxiv. https://doi.org/10.64898/2026.03.01.708642

Kim, H., Bartlett, M., Wang, L., Bates, K., He, M., Kim, M., Majidi, C., & Cohen‐Karni, T. (2026). Chronic Disease Monitoring Using Advanced Compliant Materials for Bioelectronics. Advanced Electronic Materials, 12(14), Article e00885. https://doi.org/10.1002/aelm.202500885

Schreib, C. C., Kelley, E. L., Audia, G., Garg, R., Johnson, S., Fleury, S., Behun, M. N., Vohidova, D., Kulkarni, M., Donnell, G. M., Brown, B. N., Badylak, S. F., Cohen-Karni, T., & Veiseh, O. (2026). Cell-based cytokine patch for localized immunomodulation and accelerated healing in rodent and porcine wounds. Nature Biomedical Engineering, Article 42204290. https://doi.org/10.1038/s41551-026-01687-7

Jo, S., Jia, H., Wang, X., Wu, R. E., Wang, L., Gershanok, S. A., Rivnay, J., Chan, M. K. Y., Kurchin, R., & Cohen-Karni, T. (2026). 4-Electron Oxygen Reduction Reaction (ORR) with Iron Phthalocyanine (FePc) Functionalized Nanowire Templated-3D Fuzzy Graphene (NT-3DFG). ACS Catalysis16(13), 12277–12292. https://doi.org/10.1021/acscatal.6c01943

Chris Wright, Abhijith Surendran, Inkyu Lee, Juan E. Villacres, Alex Ezerins, Alexander Curtiss, Nathan Brown, Junyi Liu, Blaine Rothrock, Peter Rios, Daisy Lopez, Ira Joshi, Hafsa Nasir, Han Wang, Cody Fell, Anthony Davis, Jose Oberholzer, Josiah Hester, Tzahi Cohen-Karni, Jonathan Rivnay, Omid Veiseh. Design of a wireless, fully implantable platform for in-situ oxygenation of encapsulated cell therapies. Device. 2026. 101106. ISSN 2666-9986. https://doi.org/10.1016/j.device.2026.101106.

Han Kim, Mabel Bartlett, Liyang Wang, Karl Bates, Mengdi He, Myungbo Kim, Carmel Majidi, Tzahi Cohen-Karni. “Chronic Disease Monitoring Using Advanced Compliant Materials for Bioelectronics.” Advanced Electronic Materials (2026): e00885. https://doi.org/10.1002/aelm.202500885.

Tian, B., Sha, B., Jiang, Y., Nandakumar, A., Ezerins, A., Kim, S. S., Cohen-Karni, T., Jiao, Y., Zhang, A., Wang, Y., Guo, Y., Zhang, X., Hu, N., Chiappini, C., Lim, S., Nijhuis, C. A., Pires-Santos, M., Monteiro, C. F., Mano, J. F., … Minev, I. R. (2026). Nano-enabled living materials and living electronics: a roadmap for innovation and impact. Nano Futures, 10(2), Article 022001. https://doi.org/10.1088/2399-1984/ae58dc

2025

Laura, A. P., Flores, I. S., Warwick, C. A., Ranke, D., Beauchamp, J. A., Cohen-Karni, T., Gold, M. S., Ross, S. E., Weber, D., Koerber, H. R., & Lempka, S. F. (2025). ID# 1899738 Characterizing Neuromodulatory Effects of Spinal Cord Stimulation Through a Combination of Computer and Experimental Models. Neuromodulation (Malden, Mass.), 28(7), S41. https://doi.org/10.1016/j.neurom.2025.08.078

Yang, H., Williamson, A. S., Seok, J. M., Ranke, D., McGee, D., Trotto, E., Chin, K., Patel, D. K., Feinberg, A. W., Cohen-Karni, T., & Webster-Wood, V. A. (2025). Modular Assembly of Biohybrid Machines Using Force-Enhanced Skeletal Muscle Actuators. bioRxiv. https://doi.org/10.1101/2025.07.06.663299

Wang L, Wang Y, Bartlett M, Roman DS, Balakrishnan G, Gershanok S, Khan R, Skillen C, Butler S, Kulkarni M, Badylak SF, Cohen-Karni D, Brown B, Cohen-Karni T. Wound state monitoring by multiplexed, electrochemical, real-time, localized, inflammation-tracking nitric oxide sensor (MERLIN). Sci Adv. 2025 May 30;11(22):eadv2385. https://doi.org/10.1126/sciadv.adv2385.

Rivnay, J., Raman, R., Robinson, J.T., Schreib, C., Cohen-Karni, T., Galloway, K.E., Veiseh, O. Integrating bioelectronics with cell-based synthetic biology. Nat Rev Bioeng 3, 317–332 (2025). https://doi.org/10.1038/s44222-024-00262-6

Tzahi Cohen-Karni, "Hybrid-nanomaterials for cellular activity modulation," Proc. SPIE PC13304, Optogenetics and Optical Manipulation 2025, PC1330403 (19 March 2025); https://doi.org/10.1117/12.3055557.

2024

O. A. Oyetade, Y. Wang, S. He, H. R.M. Margavio, S. R. Bottum, C. L. Rooney, H. Wang, C. L. Donley, G. N. Parsons, T. Cohen-Karni, J. F. Cahoon, “Covalent Functionalization of Silicon with Plasma-Grown “Fuzzy” Graphene: Robust Aqueous Photoelectrodes for CO2 Reduction by Molecular Catalysts“, ACS Appl. Mater. Interfaces. (2024). 

D. Ranke*, I. Lee*, S. Gershanok*, S. Jo, E. Trotto, Y. Wang, G. Balakrishnan, T. Cohen-Karni, “Multifunctional nanomaterials for advancing neural interfaces: recording, stimulation and beyond“, Acc. Chem. Res. (2024), 57, 13, 1803-1814.

2023

E. Bedoyan, J. W. Reddy, A. Kalmykov, T. Cohen-Karni, M. Chamanzar, “Adaptive frequency-domain filtering for neural signal preprocessing“, NeuroImage. (2023) 284, 120429.

I. Lee*, A. Surendran*, S. Fleury, I. Gimino, A. Curtiss, C. Fell, D. Shirwarksi, O. Refy, B. Rothrock, S. Jo, T. Schwartzkopff, A. Singh Mehta, Y. Wang, A. Sipe, S. John, X. Ji, G. Nikiforidis, A. W.  Feinberg, J. Hester, D. J. Weber, O. Veiseh, J. Rivnay, T. Cohen-Karni, “Electrocatalytic On-site Oxygenation for Transplated Cell-based-therapies“, Nat. Commun. (2023), 14, 7019.

Y. Wang, J. E. Hartung, A. Goad, M. A. Preisegger, B. Chacon, M. Gold, Y. Gogotsi, T. Cohen-Karni, “Photothermal Excitation of Neurons Using MXene: Cellular Stress and Phototoxicity Evaluation“, Adv. Healthcare Mater. (2023), 2302330.

M. Bartlett, M. He, D. Ranke, Y. Wang, T. Cohen-Karni, “A snapshot review on materials enabled multimodal bioelectrnoics for neurological and cardiac research“, MRS Advances. (2023).

R. Garg, G. Balakrishnan, R. Rashid, S. Gershanok, D. San Roman, Y. Wang, P. Kouassi, J. Rivnay, T. Cohen-Karni, Graphene and Poly(3,4-ethylenedioxythiophene)-Polystyrene Sulfonate Hybrid Nanostructures for Input/Output Bioelectronics“, ACS Appl. Nano Mater. (2023), 6, 10, 8495-8505.

I. E. Morales Pantoja, L. Smirnova, A.R. Muotri, K.J. Wahlin, J. Kahn, L.J. Boyd, D.H. Gracias, T.D. Harris, T. Cohen-Karni, B.S. Caffo, A.S. Szalay, F. Han, D.J. Zack, R. Etienne-Cummings, A. Akwaboah, J.C. Romero, D. M. Alam El Din, J.D. Plotkin, B. L. Paulhamus, E.C. Johnson, F. Gilbert, J.L. Curley, B. Cappiello, J.C. Schwamborn, E.J. Hill, P. Roach, D. Tornero, C. Krall, R. Parri, F. Sillé, A. Levchenko, R.E. Jabbour, B.J. Kagan, C.A. Berlinicke, Q. Huang, A. Maertens, K. Herrmann, K. Tsaioun, R. Dastgheyb, C.W. Habela, J. T. Vogelstein, T. Hartung. “First Organoid Intelligence (OI) workshop to form an OI community. Front Artif Intell. (2023) DOI: 10.3389/frai.2023.1116870. 

J. Song, C. Mou, G. Balakrishnan, Y. Wang, M. Rajagopalan, A. Schreiner, D. Naik, T. Cohen-Karni, M. S. Halbreiner, C. J. Bettinger, “Hysteresis-Free and High-Sensitivity Strain Sensing of Ionically Conductive Hydrogels“, Adv. NanoBiomed Res. (2023), DOI: 0.1002/anbr.202200132.

L. Jing, R. Cheng, R. Garg, W. Gong, I. Lee, A. Schmit, T. Cohen-Karni, X. Zhang, S. Shen, “3D Graphene-Nanowire “Sandwich” Thermal Interface with Ultralow Resistance and Stiffness”, ACS Nano. (2023), 17, 3, 2602-2610.

L. Jing, R. Cheng, M. Tasoglu, Z. Wang, Q. Wang, H. Zhai, S. Shen, T. Cohen-Karni, R. Garg, I. Lee, “High-Thermal Conductivity of Sandwich-Structured Flexible Thermal Interface Materials“, Small. (2023), 19, 2207015.

Y. Wang*, R. Garg*, D. Cohen-Karni, T. Cohen-Karni, “Neural Modulation Using Photothermally Active Nanomaterials“, Nat Rev Bioeng 1, 193 – 207 (2023).

2022

L. Matino, A. Mariano, C. Ausilio, R. Garg, T. Cohen-Karni, F. Santoro, “Modulation of Early Stage Neuronal Outgrowth through Out-of-Plane Graphene“, Nano Letters (2022), DOI: 10.1021/acs.nanolett.2c03171. 

S. Hassan, C. C. Schreib, X. Zhao, G. Duret, D. San Roman, V. Nair, T. Cohen-Karni, O. Veiseh, J. Robinson, “Real-Time In Vivo Sensing of Nitric Oxide Using Photonic Microring Resonators“, ACS Sens. (2022), 7, 8, 2253-2261.

E. Castagnola, E. Robbins, B. Wu, M.Y. Pwint, R. Garg, T. Cohen-Karni, X.T. Cui, “Flexible Glassy Carbon Multielectrode Array for In vivo Multisite Detection of Tonic and Phasic Dopamine Concentrations“, Biosensors (2022), 12(7), 540.

2021

R.Garg*, D. San Roman*, Y. Wang*, D. Cohen-Karni, T. Cohen-Karni, “Graphene nanostructures for input-output bioelectronics“, Biophysics Rev. (2021), 2, 041304.

W. Gong*, R. Garg*, R. Guo*, S. Lee, T. Cohen-Karni, S. Shen, “Thermal Transport in Multidimensional Silicon-Graphene Hybrid Nanostructures“, ACS Applied Materials and Interfaces (2021), DOI: 10.1021/acsami.108093.

Y. Wang, R. Garg, J.E. Hartung, A. Goad, D. Patel, F. Vitale, M. Gold, Y. Gogotsi, T. Cohen-Karni, “Ti3C2Tx MXene Flakes for Optical Control of Neuronal Electrical Activity”, ACS Nano (2021), 15 (9), 14662-14671.

E. Castagnola, R. Garg, S.K. Rastogi, T. Cohen-Karni, X.T. Cui, “3D Fuzzy Graphene Microelectrode Array for Neurotransmitter Sensing at Sub-cellular Spatial Resolution“, Biosensors and Bioelectronics (2021), 113440.

A. Kalmykov,* J.W. Reddy,* E. Bedoyan,* Y. Wang, R. Garg, S.K. Rastogi, D. Cohen-Karni, M. Chamanzar, T. Cohen-Karni, “Bioelectrical Interfaces with Cortical Spheroids in Three-Dimensions“, Journal of Neural Engineering (2021), 18, 055005.

M. Dipalo,* S.K. Rastogi,* L. Matino, R. Garg, J. Bliley, G. Iachetta, G. Melle, R. Shrestha, S. Shen, F. Santoro, A.W. Feinberg, A. Barbaglia, T. Cohen-Karni, F. de Angelis, “Intracellular Action Potential Recordings from Cardiomyocytes by Ultra-Fast Pulse Laser Irradiation of Fuzzy Graphene Microelectrodes”, Science Advances (2021), 7 (15), eabd5175.

A.R. Wood, R. Garg, T. Cohen-Karni, A.J. Russell, P. LeDuc, “Toward Sustainable Desalination Using Food Waste: Capacitive Desalination with Bread-Derived Electrodes”, RSC Advances (2021), 11, pp 9628-9637.

2020

D. San Roman,* R. Garg,* T. Cohen-Karni, “Bioelectronics with Graphene Nanostructures“, APL Materials (2020), 8 (10), 100906.

R. Garg,* D. San Roman,* T. Cohen-Karni, “Multidimensional graphene nanostructures – synthesis and applications“, Pure and Applied Chemistry (2020), 92 (12), 1929-1936. 

L. Matino, S.K. Rastogi, L.D. Garma, T. Cohen-Karni, F. Santoro, “Characterization of the Coupling between Out-of-Plane Graphene and Electrogenic Cells“, Advanced Materials Interfaces (2020), 2000699.

S.K. Rastogi*, R. Garg*, M.G. Scopelliti, B.I. Pinto, J.E. Hartung, S. Kim, C.G.E. Murphey, N. Johnson, D. San Roman, F. Bezanilla, J.F. Cahoon, M. Gold, M. Chamanzar, T. Cohen-Karni, “Remote Non-Genetic Optical Modulation of Neuronal Activity Using Fuzzy Graphene“, Proceedings of the National Academy of Sciences USA (2020), 117 (24), pp 13339-13349.

S.K. Rastogi, J. Bliley, L. Matino, R. Garg, F. Santoro, A.W. Feinberg, T. Cohen-Karni, “Three-dimensional fuzzy graphene ultra-microelectrodes for sub-cellular electrical recordings“, Nano Research (2020), 13 (5), pp 1444-1452.

D. San Roman*, D. Krishnamurthy*, R. Garg, H. Hafiz, M. Lamparski, N. Nuhfer, V. Meunier, V. Viswanathan, T. Cohen-Karni, “Engineering Three-Dimensional (3D) Out-of-Plane Graphene Edge Sites for Highly-Selective Two-Electron Oxygen Reduction Electrocatalysis,” ACS Catalysis (2020), 10 (3), pp 1993-2008.

2019

A. Kalmykov, C. Huang, J. Bliley, D. Shiwarski, J. Tashman, A. Abdullah, S.K. Rastogi, S. Shukla, E. Mataev, A.W. Feinberg, T. Cohen-Karni, “Organ-on-e-chip: Three-dimensional self-rolled biosensor array for electrical interrogations of human electrogenic spheroids,” Science Advances (2019), 5, eaax0729.

R. Garg, D. Gopalan, S.C. de la Barrera, H. Hafiz, N.T. Nuhfer, V. Viswanathan, B.M. Hunt, T. Cohen-Karni, “Electron Transport in Multidimensional Fuzzy Graphene Nanostructures,” Nano Letters (2019), 8, pp 5335-5339.

A.R. Wood, R. Garg, K. Justus, T. Cohen-Karni, P. LeDuc, A. J. Russell, ”Intact mangrove root electrodes for desalination,” RSC Advances (2019), 9, pp 4735-4743.

S.K. Rastogi, T. Cohen-Karni, “Nano-electronics for Neuroscience,” Encyclopedia of Biomedical Engineering. (2019), pp 631-649.

2018

S.K. Rastogi, A. Kalmykov, N. Johnson, T. Cohen-Karni, “Bioelectronics with nanocarbons,” Journal of Materials Chemistry B. (2018), 6, pp 7159-7178.

S.K. Rastogi, J. Bliley, D. Shiwarski, G. Raghavan, A.W. Feinberg, T. Cohen-Karni, “Graphene Microelectrode Arrays for Electrical and Optical Measurements of Human Stem Cell derived Cardiomyocytes,” Cellular and Molecular Bioengineering. (2018), 11 (5), pp 407-418.

2017

R. Garg*, S.K. Rastogi*, M. Lamparski, S. C. de la Barrera, G.T. Pace, N.T. Nuhfer, B.M. Hunt, V. Meunier, T. Cohen-Karni, “Nanowire-Mesh Templated Growth of Out-of-Plane Three-Dimensional Fuzzy Graphene,” ACS Nano. (2017), 11 (6), pp 6301–6311.

S.K. Rastogi, G. Raghavan, G. Yang, T. Cohen-Karni, “Effect of Graphene on Nonneuronal and Neuronal Cell Viability and Stress,” Nano Lett. (2017), 17 (5), pp 3297–3301.

2016

E. Mataev*, S.K. Rastogi*, A. Madhusudan*, J. Bone, N. Lamprinakos, Y. Picard, T. Cohen-Karni, “Synthesis of Group IV Nanowires on Graphene: The Case of Ge Nanocrawlers,” Nano Lett. (2016), 16 (8), pp 5267–5272.

2014

D. Gabriel, T. CohenKarni, D. Huang, H.H. Chiang, D.S. Kohane, “Photoactive electrospun fibers for inducing cell death,” Adv. Health Mater., 3, 494–499 (2014).

2013

T. CohenKarni, T. Dvir, “Advanced technologies for engineering tissue mimetics,” Isr. J. Chem., 53, 630-636 (2013).

J. Larkin, R. Henley, D.C. Bell, T. Cohen-Karni, J.K. Rosenstein, M. Wanunu, “Slow DNA transport through nanopores in hafnium oxide membranes,” ACS Nano,7, 10121-10128 (2013).

T. Cohen-Karni, C.M. Lieber, “Nanowire nanoelectronics: Building interfaces with tissue and cells at the natural scale of biology,” Pure Appl. Chem., 85, 883-901, (2013).

2012

T. Cohen-Karni, K.J. Jeong, J. Tsui, G. Reznor, M. Mustata, M. Wanunu, A. Graham, C. Marks, D.C. Bell, R. Langer, D.S. Kohane, “Nanocomposite gold-silk nanofibers,” Nano Lett., 12, 5403–5406 (2012).

T. Cohen-Karni, R. Langer, D.S. Kohane, “The Smartest Materials: The future of nanoelectronics in medicine”, ACS Nano, 6, 6541–6545 (2012).

R. Gao, S. Strehle, B. Tian, T. Cohen-Karni, P. Xie, X. Duan, Q. Qing and C.M. Lieber, “Outside looking in: Nanotube transistor intracellular sensors,” Nano Lett., 12, 3329-3333 (2012).

T. Cohen-Karni*, D. Casanova*, J. Cahoon, Q. Qing, D. Bell and C.M. Lieber, “Synthetically-encoded ultrashort-channel nanowire transistors for fast, point-like cellular signal detection,” Nano Lett.12, 2639-2644 (2012).

X. Duan, R. Gao, P. Xie, T. Cohen-Karni, Q. Qing, H.S. Choe, B. Tian, X. Jiang and C.M. Lieber, “Intracellular recordings of action potentials by an extracellular nanoscale field-effect transistor,” Nature Nanotechnol., 7, 174-179 (2012).

2011

T. Cohen-Karni, B. Tian and C.M. Lieber, “Electrical recording from cardiac cells and tissue using nanowire transistors,” in Nanomedicine and the Cardiovascular System (eds. R.J. Hunter and V.R. Preedy), Science Publishers (2011).

2010

B. Tian*, T. Cohen-Karni*, Q. Qing, X. Duan, P. Xie and C.M. Lieber, “Three-dimensional, flexible nanoscale field-effect transistors as localized bioprobes,” Science329, 831-834 (2010).

B. P. Timko, T. Cohen-Karni, Q. Qing, B. Tian and C.M. Lieber, “Design and implementation of functional nanoelectronic interfaces with biomolecules, cells and tissue using nanowire device arrays,” IEEE Trans.Nanotechnol.9, 269-280 (2010).

T. Cohen-Karni*, Q. Qing*, Q. Li*, Y. Fang and C.M. Lieber, “Graphene and nanowire transistors for cellular interfaces and electrical recording,” Nano Lett.10, 1098-1102 (2010).

Q. Qing, S.K. Pal, B. Tian, X. Duan, B.P. Timko, T. Cohen-Karni, V.N. Murthy and C.M. Lieber, “Nanowire transistor arrays for mapping neural circuits in acute brain slices,” Proc. Natl. Acad. Sci. USA107, 1882-1887 (2010).

2009

T. Cohen-Karni, B.P. Timko, L.E. Weiss and C.M. Lieber, “Flexible electrical recording from cells using nanowire transistor arrays,” Proc. Natl. Acad. Sci. USA106, 7309-7313 (2009).

B. P. Timko*, T. Cohen-Karni*, G. Yu, Q. Qing, B. Tian and C.M. Lieber, “Electrical recording from hearts with flexible nanowire device arrays,” Nano Lett.9, 914-918 (2009).

2008 and prior

S. Nagapriya, S. Berber, T. Cohen-Karni, L. Segev, O. Srur-Lavi, D. Tomanek, E. Joselevich, “Origin of torsion-induced conductance oscillation in carbon nanotubes,” Phys. Rev. B, 78, 165417 (2008).

T. Cohen-Karni*, L. Segev*, O. Srur-Lavi*, S.R. Cohen, E. Joselevich, “Torsional electromechanical quantum oscillation in carbon nanotubes,” Nat. Nanotechnol. 1, 36-41 (2006).

Y. Sugimura, I. Cohen-Karni, P. McCluskey and J.J. Vlassak, “Mechanical behavior of sputter-deposited Fe-Pd shape-memory thin films,” J. Mater. Res.20, 2279-2287 (2005).

Y. Sugimura, T. Cohen-Karni, P. McCluskey and J.J. Vlassak, “Fabrication and Characterization of Fe-Pd shape-memory thin films,” MRS Symp. Proc. 785, D7.4.1 (2004).

* These authors contributed equally to this work.
‡ Corresponding author.