Publications

J. Bisquert*, S.T. Keene, “Ionic-electronic transistors small signal AC admittance: theory and experiment” ArXiv preprint 2408.02648 (2024).

A.J. Boys*, S.T. Keene, “Bioelectronic Interfacial Matching for Superior Implant Design” Cell Rep. Phys. Sci. (2024). https://doi.org/10.1016/j.xcrp.2024.101877

E.P.W. Jenkins, S.T. Keene, P.J. Oldroyd, I.B. Dimov, G.G. Malliaras*, “High Capacitance Freestanding PEDOT:PSS Electrodes for Low-Frequency Electric Field Delivery” AIP Adv. 14, 035006 (2024). https://doi.org/10.1063/5.0180487

L. Taussig, M. Ghasemi, S. Han, A.L. Kwansa, R. Li, S.T. Keene, N. Woodward, Y.G. Yingling, G.G. Malliaras*, E.D. Gomez*, A. Amassian*, Electrostatic self-assembly yields a structurally stabilized PEDOT:PSS with efficient mixed transport and high-performance OECTs, Matter (2024). https://doi.org/10.1016/j.matt.2023.12.021

2023

S.T. Keene*, L.W. Gatecliff, S.L. Bidinger, M. Moser, I. McCulloch, G.G. Malliaras, Stable operating windows for polythiophene organic electrochemical transistors, MRS Comms. (2023). https://doi.org/10.1557/s43579-023-00511-6

S. Fabiano, L. Flagg, T.C. Hidalgo Castillo, S. Inal*, L.G. Kaake, L.V. Kayser, S.T. Keene, S. Ludwigs, C. Muller, B.M. Savoie, B. Lüssem, J.L. Lutkenhaus, M. Matta, D. Meli, S.N. Patel, B.D. Paulsen, J. Rivnay*, J. Surgailis, “On the fundamentals of organic mixed ionic/electronic conductors” J. Mater. Chem. C 11, 14527-14539 (2023). https://doi.org/10.1557/s43579-023-00511-6

S.T. Keene*, A. Rao, G.G. Malliaras*, “The relationship between ionic-electronic coupling and transport in organic mixed conductors” Sci. Adv. 9, eadi3536 (2023). https://doi.org/10.1126/sciadv.adi3536

S.T. Keene*, J. Laulainen, R. Pandya, M. Moser, C. Schnedermann, P.A. Midgley, I. McCulloch, A. Rao*, G.G. Malliaras*, “Hole-limited electrochemical doping in conjugated polymers” Nat. Mater. 22, 1121-1127 (2023). https://doi.org/10.1038/s41563-023-01601-5

D. Lyu,† Y. Jin,† P.C.M.M. Magusin, S. Sturniolo, E.W. Zhao, S. Yamamoto, S.T. Keene, G.G. Malliaras, C.P. Grey*, “Operando NMR electrochemical gating studies of ion dynamics in PEDOT:PSS” Nat. Mater. 22, 746–753 (2023). https://doi.org/10.1038/s41563-023-01524-1

Y. Zhang, M. Ngyuyen, C. Schnedermann, S.T. Keene, I. Jacobs, A. Rao, H. Sirringhaus* “Transmission-based charge modulation microscopy on polymer blend field-effect transistors” J. Chem. Phys. 158, 034201 (2023). https://doi.org/10.1063/5.0132426

2022

S.L. Bidinger, S.T. Keene, S. Han, K.W. Plaxco, G.G. Malliaras*, T. Hasan* “Pulsed Transistor operation enables miniaturization of electrochemical aptamer-based sensors” Sci. Adv. 8, eadd4111 (2022). https://doi.org/10.1126/sciadv.add4111

S.T. Keene*, W. Michaels, A. Melianas, T.J. Quill, E.J. Fuller, A. Giovannitti, A.A. Talin, C. Tassone, I. McCulloch, J. Qin, A. Troisi*, A. Salleo*, “Efficient electronic tunnelling governs transport in conductive polymer-insulator blends” J. Am. Chem. Soc. 144, 10368-10376 (2022). https://doi.org/10.1021/jacs.2c02139

S.T. Keene†, V. Gueskine†, G. Malliaras, M. Berggren, K. Tybrandt, I. Zozoulenko*, "Exploiting Mixed Conducting Polymers in Organic and Bioelectronic Devices" Phys. Chem. Chem. Phys. 24, 19144-19163 (2022). https://doi.org/10.1039/D2CP02595G

T.J. Quill, S.T. Keene, A. Salleo “2022 Roadmap on Neuromorphic Computing and Engineering – Organic Materials” Neuromorph. Comput. Eng. 2, 022501 (2022). https://doi.org/10.1088/2634-4386/ac4a83

2021

Krauhausen, D.A. Koutsouras, A. Melianas, S.T. Keene, K. Lieberth, H. Ledanseur, R. Sheelamanthula, A. Giovannitti, F. Torricelli, I. McCulloch, P.W.M. Blom, A. Salleo*, Y. van de Burgt*, P. Gkoupidenis*, “Organic neuromorphic electronics for sensorimotor integration and learning in robotics” Sci. Adv. 7, eabl5068 (2021). https://doi.org/10.1126/sciadv.abl5068

T.J. Quill, G. LeCroy, A. Melianas, D. Rawlings, Q. Thiburce, R. Sheelamanthula, C. Cheng, Y. Tuchman, S.T. Keene, I. McCulloch, R. Segalman, M.L. Chabinyc, A. Salleo*, “Ion Pair Uptake in Ion Gel Devices Based on Organic Mixed Ionic-Electronic Conductors” Adv. Funct. Mater. 31, 2104301 (2021). https://doi.org/10.1002/adfm.202104301

S.T.M. Tan, S. Keene, A. Giovannitti, A. Melianas, M. Moser, I. McCulloch, A. Salleo*, “Operation mechanism of organic electrochemical transistors as redox chemical transducers” J. Mater. Chem. C 9, 12148-12158 (2021). https://doi.org/10.1039/D1TC02224E

A. Gumyusenge*, A. Melianas*, S.T. Keene, A. Salleo, “Materials Strategies for Organic Neuromorphic Devices” Annu. Rev. Mater. Res. 51, 5.1–5.25 (2021). https://doi.org/10.1146/annurev-matsci-080619-111402

S.T. Keene, P. Gkoupidenis, Y.v.d. Burgt “Neuromorphic computing systems based on flexible organic electronics”, Chap. 18 in Piero Cosseddu, Mario Caironi (ed.) “Organic Flexible Electronics” ISBN 9780128188903, Woodhead Publishing, 531-574 (2021). https://doi.org/10.1016/B978-0-12-818890-3.00018-7

2020

Y. Chen†, N.J. Rommelfanger†, A.I. Mahdi†, X. Wu†, S.T. Keene, A. Obaid, A. Salleo, H. Wang*, G. Hong*, “How may flexible electronics facilitate neuroscience research?” Biomaterials, 120559 (2020). https://doi.org/10.1016/j.biomaterials.2020.120559

S.T. Keene†, C. Lubrano†, S. Kazemzadeh, A. Melianas, Y. Tuchman, G. Polino, L. Cina, A. Salleo*, Y.v.d. Burgt*, F. Santoro*, “A biohybrid synapse with neurotransmitter-mediated plasticity” Nat. Mater. 19, 969-973 (2020). https://doi.org/10.1038/s41563-020-0703-y

A. Melianas*, T.J. Quill, G. LeCroy, Y. Tuchman, H.v. Loo, S.T. Keene, A. Giovannitti, H.R. Lee, I.P. Maria, I. McCulloch, A. Salleo*, “Temperature-resilient solid-state organic artificial synapses for neuromorphic computing” Sci. Adv. 6, eabb2958 (2020). https://doi.org/10.1126/sciadv.abb2958

S. Keene, Y.v.d. Burgt*, “Lowering the threshold for bioelectronics” Nat. Mater. 19, 584-596 (2020). https://doi.org/10.1038/s41563-020-0623-x

S.T. Keene, T.P.A.v.d. Pol, D. Zakhidov, C.H.L. Weijtens, R.A.J. Janssen, A. Salleo*, Y.v.d. Burgt*, “Enhancement-mode PEDOT:PSS Organic Electrochemical Transistors Using Molecular De-doping” Adv. Mater. 32, 2000270 (2020). https://doi.org/10.1002/adma.202000270

C. Dahlstöm*, V. López Durán, S.T. Keene, A. Salleo, M. Norgren, L. Wågberg, “Ion conductivity through TEMPO-mediated oxidated and periodate oxidated cellulose membranes” Carbohydrate Polymers 233, 115829 (2020). https://doi.org/10.1016/j.carbpol.2020.115829

2019

S.T. Keene, D. Fogarty, R. Cooke, C.D. Casadevall, A. Salleo*, O. Parlak*, “Wearable organic electrochemical transistor patch for multiplexed sensing of calcium and ammonium ions from human perspiration” Adv. Healthcare Mater. 8, 1901321 (2019). https://doi.org/10.1002/adhm.201901321

Y.J. Tak, S.T. Keene, W.G. Kim, B.H. Kang, S.J. Kim, A. Salleo*, H.J. Kim*, “Multifunctional, room-temperature processible, heterogeneous organic passivation layer for oxide semiconductor thin-film transistors” ACS Appl. Mater. Interfaces 12, 2615-2624 (2019). https://doi.org/10.1021/acsami.9b16898

E.J. Fuller*, Y. Li, C. Bennet, S.T. Keene, A. Melianas, S. Agarwal, M.J. Marinella, A. Salleo, A.A. Talin*, “Redox transistors for neuromorphic computing” IBM J. Res. & Dev. 63, (2019). https://doi.org/10.1147/JRD.2019.2942285

T.P.A.v.d. Pol, S.T. Keene, B.W.H. Saes, S.C.J. Meskers, A. Salleo, Y.v.d. Burgt*, R.A.J. Janssen*, “The Mechanism of Dedoping PEDOT:PSS by Aliphatic Polyamines” J. of Phys. Chem. C 123, 24328-24337 (2019). https://doi.org/10.1021/acs.jpcc.9b07718

E.J. Fuller, S.T. Keene†, A. Melianas†, Z. Wang, S. Agarwal, Y. Li, Y. Tuchman, C.D. James, M.J. Marinella, J.J. Yang, A. Salleo*, A.A. Talin*, “Parallel programming of an ionic floating-gate memory array for scalable neuromorphic computing” Science 364 (6440), 570-574 (2019). https://doi.org/10.1126/science.aaw5581

2018

S.T. Keene, A. Melianas, Y.v.d. Burgt, A. Salleo*, “Mechanisms for Enhanced State Retention and Stability in Redox-Gated Organic Neuromorphic Devices” Adv. Electron. Mater. 5, 1800686 (2018). https://doi.org/10.1002/aelm.201800686

Y.J. Tak, F. Hilt, S.T. Keene, W.G. Kim, R.H. Dauskardt*, A. Salleo*, H.J. Kim*, “High-throughput open-air plasma activation of metal-oxide thin films with low thermal budget” ACS Appl. Mater. Inter. 10, 37223–37232 (2018). https://doi.org/10.1021/acsami.8b12373

O. Parlak*, S.T. Keene, A. Marais, V.F. Curto, A. Salleo*, “Molecularly-selective Nanoporous Membrane-based Wearable Organic Electrochemical Device for Non-invasive Cortisol Sensing” Sci. Adv. 4, eaar2904 (2018). https://doi.org/10.1126/sciadv.aar2904

Y.v.d. Burgt*, A. Melianas*, S.T. Keene, G. Malliaras, A. Salleo, “Organic electronics for neuromorphic computing” Nat. Electron. 1, 386-397 (2018). https://doi.org/10.1038/s41928-018-0103-3

S.T. Keene, A. Melianas, E. Fuller, Y.v.d. Burgt, A.A. Talin, A. Salleo*, “Optimized pulsed write schemes improve linearity and write speed for low-power organic neuromorphic devices” J. Phys. D: Appl. Phys. 51, 224002 (2018). https://doi.org/10.1088/1361-6463/aabe70

2017

F. Santoro†, Y.v.d. Burgt†, S.T. Keene†, B. Cui*, A. Salleo*, “Enhanced cell-chip coupling by rapid femtosecond laser patterning of soft PEDOT:PSS bio-interfaces” ACS Appl. Mater. Inter. 9, 39116-39122 (2017). https://doi.org/10.1021/acsami.7b12308

O. Parlak*, Y.K. Mishra, A. Grigoriev, M. Mecklenburg, W. Luo, S. Keene, A. Salleo, K. Schulte, R. Ahuja, R. Adelung, A.P.F. Turner, A. Tiwari*, “Hierarchical aerographite nano-microtubular tetrapodal networks based electrodes as lightweight supercapacitor” Nano Energy 34, 570-577 (2017). https://doi.org/10.1016/j.nanoen.2017.03.004

Y.v.d. Burgt, E. Lubberman, E.J. Fuller, S.T. Keene, G.C. Faria, S.Agarwal, M.J. Marinella, A.A. Talin*, A. Salleo*, “A non-volatile organic electrochemical device as a low-voltage artificial synapse for neuromorphic computing” Nat. Mater. 16, 414-418 (2017). https://doi.org/10.1038/nmat4856

2016

Z. Hemmatian, S. Keene, E.E. Josberger, T. Miyake, C. Arbodela, J. Soto-Rodriguez, F. Baneyx, M. Rolandi*, “Electronic control of H+ current in a bioprotonic device with Gramicidin A and Alamethicin” Nat. Comm. 7, 12981 (2016). https://doi.org/10.1038/ncomms12981

Y. Deng, T. Miyake*, S. Keene, E.E. Josberger, M. Rolandi, “Proton mediated control of biochemical reactions with bioelectronics pH modulation” Sci. Reports 6, 204080 (2016). https://doi.org/10.1038/srep24080

2015

Z. Hemmatian, T. Miyake, Y. Deng, E.E. Josberger, S. Keene, R. Kautz, C. Zhong, J. Jin, M. Rolandi*, “Taking electrons out of bioelectronics: bioprotonic memories, transistors, and enzyme logic” J. of Mat. Chem. C 3, 6407-6412 (2015). https://doi.org/10.1039/C5TC00502G

T. Miyake, E.E. Josberger, S. Keene, Y. Deng, M. Rolandi*, “An enzyme logic bioprotonic transducer” APL Mat. 3, 014906 (2015). https://doi.org/10.1063/1.4900886