Publications

A complete list of publications can be found in Google Scholar.

Journal Articles (Selected):

Ebrahimi lab members are indicated in bold; # Equal contribution; Corresponding author is highlighted with *.
  1. P. Soltan Khamsi, V. Kammarchedu, and A. Ebrahimi*, Evaporation-Enhanced Redox Cycling for Rapid Detection of Attomolar SARS-CoV-2 Virions Using Nanolithography-free Electrochemical Devices, Advanced Materials Technologies, 2025 [accepted] (preprint link)
  2. C. Brustoloni, P. S. Khamsi, V. Kammarchedu, and A. Ebrahimi*, Systematic Study of Various Functionalization Steps for Ultrasensitive Detection of SARS-CoV-2 with Direct Laser-Functionalized Au-LIG Electrochemical Sensors, ACS Applied Materials and Interfaces, 2024 [accepted]
  3. H. Asgharian, V. Kammarchedu, P. Soltan Khamsi, C. Brustoloni, and A. Ebrahimi*, Multi-Electrode Extended Gate Field Effect Transistors based on Laser Induced Graphene for Detection of Vitamin C and SARS-CoV-2, ACS Applied Materials and Interfaces, 2024 [accepted] [Front Cover]
  4. V. Kammarchedu#*, D. Butler#, A. S. Rashid, A. Ebrahimi*, and M. Kayyalha*, Understanding Disorder in Monolayer Graphene Devices with Gate-Defined Superlattices, Nanotechnology, 2024 [accepted]
  5. V. Kammarchedu*, M. Alsiyabi, and A. Ebrahimi*, Skin-Conformal Myography for Real-Time Hand Tracking using a Laser Induced Graphene Strain Sensor Array, Advanced Intelligent Systems, 2024 [accepted] (link to the codes)
  6. J. Balsamo#, K. Zhou#, V. Kammarchedu, A. Ebrahimi*, and E. Bess*, Mechanistic Insight into Intestinal α-Synuclein Aggregation in Parkinson’s Disease using a Laser-Printed Electrochemical Sensor, ACS Chemical Neuroscience, 2024 [accepted]
  7. V. Kammarchedu, H. Asgharian, K. Zhou, P. Soltan Khamsi, and A. Ebrahimi*, Recent Advances in Graphene-based Electroanalytical Devices for Healthcare Applications, Nanoscale, 2024, DOI: 10.1039/D3NR06137J [accepted][Invited]
  8. D. Butler, C. Sankhe, P. Soltan Khamsi, E. Gomez, and A. Ebrahimi*, Solution-processed graphene films for electrochemical monitoring of extracellular nitric oxide released by breast cancer cells, 2D Materials (2023) [accepted] [Invited to the Special Issue: Emerging Leaders]
  9. K. Zhou, V. Kammarchedu, and A. Ebrahimi*, Direct Laser-Functionalized Au-LIG Sensors for Real-time Electrochemical Monitoring of Response of Pseudomonas aeruginosa Biofilms to Antibiotics, ECS Sensors Plus (2023) [accepted]
  10. V. Kammarchedu and A. Ebrahimi*, Advancing Electrochemical Screening using a Customizable Machine Learning-based Multimodal System, IEEE Sensors Letters (2023) [accepted]
  11. D. Butler, V. Kammarchedu, K. Zhou, L. Peeke, L. Lyle, D. W. Snyder, and A. Ebrahimi*, Cellulose-Based Laser-Induced Graphene Devices for Electrochemical Monitoring of Bacterial Phenazine Production and Viability, Sensors and Actuators B: Chemical (2023) [accepted]
  12. V. Kammarchedu, D. Butler, and A. Ebrahimi*, A machine learning-based multimodal electrochemical analytical device based on eMoSx-LIG for multiplexed detection of tyrosine and uric acid in sweat and saliva, Analytica Chimica Acta (2022) [accepted][Penn State News]
  13. K. Zhou, V. Kammarchedu, D. Butler, P. Soltan Khamsi, and A. Ebrahimi*, Electrochemical Sensors based on MoSx-functionalized Laser Induced Graphene for Real-time Monitoring of Phenazines produced by Pseudomonas aeruginosa, Advanced Healthcare Materials (2022) [accepted]
  14. D. Butler and A. Ebrahimi*, Rapid and sensitive detection of viral particles by coupling redox cycling and
    electrophoretic enrichment, Biosensors and Bioelectronics (2022) [in press] https://doi.org/10.1016/j.bios.2022.114198
  15. L. Goodnight, D. Butler, T. Xia, A. Ebrahimi*, Non-enzymatic Detection of Glucose in Neutral Solution using PBS-treated Electrodeposited Copper-Nickel Electrodes, Biosensors 11 (2021) 409. https://www.mdpi.com/2079-6374/11/11/409 (invited)
  16. D. Butler, D. Moore, N. Glavin, J. Robinson, A. Ebrahimi*, Facile Post-Deposition Annealing of Graphene Ink Enables Ultrasensitive Electrochemical Detection of Dopamine, ACS Applied Materials & Interfaces (2021) accepted; http://dx.doi.org/10.1021/acsami.0c21302
  17. A. W Simonson, A. S Mongia, M. R Aronson, J. N Alumasa, D. C Chan, A. Lawanprasert, M. D Howe, A. Bolotsky, T. K Mal, C. George, A. Ebrahimi, A. D Baughn, E. A Proctor, K. C Keiler, S. H Medina*, Pathogen-specific antimicrobials engineered de novo through membrane-protein biomimicry, Nature Biomedical Engineering 5 (2021) 467-480; Penn State News
  18. A. Bolotsky, R. Muralidharan, D. Butler, K. Root, W. Murray, Z. Liu, and A. Ebrahimi*, Organic Redox-Active Crystalline Layers for Reagent-free Electrochemical Antibiotic Susceptibility Testing (ORACLE-AST), Biosensors and Bioelectronics 172 (2021)112615 accepted; Penn State News
  19. K. Zhou #, C. Zhou #, A. Sapre, J. Henry Pavlock, A. Weaver, R. Muralidharan, J. Noble, T. Chung, J. Kovac, Z. Liu*, A. Ebrahimi*, Dynamic Laser Speckle Imaging meets Machine Learning to enable Rapid Antibacterial Susceptibility Testing (DyRAST), ACS Sensors (2020) accepted; Penn State News
  20. Y. Lei #, D. Butler #, M. Lucking, F. Zhang, T. Xia, K. Fujisawa, T. Granzier-Nakajima, R. Cruz-Silva, M. Endo, H. Terrones, M. Terrones*, and A. Ebrahimi*, Single-Atom Doping of MoS2 with Manganese Enables Ultrasensitive Detection of Dopamine: Experimental and Computational Approach, Science Advances (2020) 6:eabc4250 https://advances.sciencemag.org/content/6/32/eabc4250; Penn State News; NSF Research News
  21. R. Muralidharan, V. Chandrashekhar, D. Butler, and A. Ebrahimi*, A Smartphone-Interfaced, Flexible Electrochemical Biosensor based on Graphene Ink for Selective Detection of Dopamine, IEEE Sensors (2020) – in press https://ieeexplore.ieee.org/document/9126813
  22. A. Bolotsky #, D. Butler #, C. Dong, K. Gerace, N. Glavin, C. Muratore, J. Robinson, and A. Ebrahimi*, Two-Dimensional Materials in Biosensing and Healthcare: from In Vitro Diagnostics to Optogenetics and Beyond, ACS Nano 13 (2019) 9781-9810 (Invited Review; ACS Editors’ Choice) https://pubs.acs.org/doi/10.1021/acsnano.9b03632
  23. N. Briggs, S. Subramanian, Z. Lin, X. Li, X. Zhang, K. Zhang, K. Xiao, D. Geohegan, R. Wallace, LQ Chen, M. Terrones, A. Ebrahimi, S. Das, J. Redwing, C. Hinkle, K. Momeni, A. Van Duin, V. Crespi, S. Kar, J. A Robinson*, A roadmap for electronic grade 2D materials, 2D Materials 6 (2019) 022001
  24. A. Ebrahimi*, K. Zhang, C. Dong, S. Subramanian, D. Butler, A. Bolotsky, L. Goodnight, Y. Cheng, J. A. Robinson*, FeSx-Graphene Heterostructures: Nanofabrication-Compatible Catalysts for Ultra-Sensitive Electrochemical Detection of Hydrogen Peroxide, Sensors and Actuators B: Chemical 285 (2019) 631-638 https://doi.org/10.1016/j.snb.2018.12.033
  25. D. Butler, N. Goel, L. Goodnight, S. Tadigadapa, and A. Ebrahimi*, Detection of Bacterial Metabolism in Lag-Phase using Impedance Spectroscopy of Agar-integrated 3D Microelectrodes, Biosensors and Bioelectronics 129 (2019) 269-276 DOI: 10.1016/j.bios.2018.09.057
  26. A. Ebrahimi, L. N. Csonka, and M. A. Alam*, Analyzing Thermal Stability of Cell Membrane of Salmonella Using Time-Multiplexed Impedance Sensing, Biophysical Journal 114 (2018) 609–618, (Penn State News)

    Before Penn State:
  27. A. Ebrahimi and M. A. Alam, Droplet-based non-Faradaic impedance sensors for Assessment of Susceptibility of Escherichia coli to Ampicillin in 60 minutes, Biomedical Microdevices 19 (2017) 27.
  28. A. Ebrahimi and M. A. Alam, Evaporation-induced stimulation of bacterial osmoregulation for electrical assessment of cell viability, Proceedings of the National Academy of Sciences 113 (2016) 7059 (NSF Science 360 News).
  29. P. Dak*, A. Ebrahimi*, V. Swaminathan, C. Duarte-Guevara, R. Bashir, and M. A Alam (*Equal Contribution), Droplet-based Biosensing for Lab-on-a-Chip Open Microfluidics Platforms, Biosensors 6 (2016) 14 (Invited, review paper)
  30. A. Ebrahimi and M. A. Alam, Time-resolved PCA of ‘droplet impedance’ identifies DNA hybridization at nM concentration, Sensors and Actuators: B 215 (2015) 215-224.
  31. P. Dak, A. Ebrahimi, and M. A. Alam, Non-faradaic impedance characterization of an evaporating droplet for microfluidic and biosensing applications, Lab Chip 14 (2014) 2469-2479.
  32.  A. Ebrahimi, P. Dak, E. Salm, S. Dash, S. V. Garimella, R. Bashir, and M. A. Alam, Nanotextured Superhydrophobic Electrodes enable Detection of attomolar-scale DNA concentration within a Droplet by non-Faradaic Impedance Spectroscopy, Lab Chip 13 (2013) 4248-4256 (Research Highlights in Lab on a Chip)
  33. A. Ebrahimi, A. Pirouz, Y. Abdi, S. Azimi, and S. Mohajerzadeh, Selective deposition of CuO/SnO2 sol–gel on porous SiO2 suitable for the fabrication of MEMS-based H2S sensors, Sensors and Actuators B 173 (2012) 802– 810.
  34. A. Ebrahimi, S. Mohajerzadeh, A. Alihosseinzadeh, A. Khodadadi, and Y. Mortazavi, Preferential Oxidation of CO Based on Electro-Thermally Assisted Catalytic Ni/Cu Nanostructures on Si Micro-Grass, ECS Transactions 35 (2011) 37-41.
  35. Y. Abdi, A. Ebrahimi, S. Mohajerzadeh and M. Fathipour, High sensitivity interdigited capacitive sensors using branched tree-like carbon nanotubes on silicon membranes, App. Phys. Lett. 94 (2009) 1735071-3.

Patents, Reports & Book Chapters:

  1. D. Butler and A. Ebrahimi (2021), Agar-Integrated Three-Dimensional Microelectrodes for On-Chip Impedimetric Monitoring of Bacterial Viability, In Book: Biomedical Engineering Technologies, Methods Molecular Biology (Vol. 2393), Chapter 23, Humana Press. ISBN: 978-1-0716-1802-8 (in press)
  2. Rapid and Sensitive Detection of Viral Particles by Coupling Redox Cycling and Electrophoretic Enrichment; Derrick Butler and Aida Ebrahimi, USPTO Serial No. 63/320,856 (filed)
  3. Customizable Potentiostat with Integrated Machine Learning for High Throughput Multimodal Electrochemical Sensing; Vinay Kammarchedu and Aida Ebrahimi, USPTO Serial No. 63/390,392 (filed)
  4. Machine Learning-enhanced Dynamic Laser Speckle Imaging for Rapid Antimicrobial Susceptibility Testing; Keren Zhou, Chen Zhou, Jasna Kovac, Zhiwen Liu, and Aida Ebrahimi, USPTO Serial No. 62/969,363 (filed)
  5. Dong, C.#, Butler, D.#, Zhao, R., Cheng, Y., Robinson, J. A., & Ebrahimi, A. “2D Materials Matter: A Perspective on Biosensing Applications” Technical reports series by Millipore Sigma. (Invited mini-Review article)
  6. A. Ebrahimi and M. Alam, Droplet-based monitoring of biological samples, US Patent: US20210139942A1

Selected Conferences and Talks (presenter in bold):

  1. C. Brustoloni, P. Soltan Khamsi, V. Kammarchedu, and A. Ebrahimi, Highly Sensitive Sars-Cov-2 Detection Using Au-Functionalized Laser-Induced Graphene Sensors, PRiME-ECS joint meeting, Honolulu, HI, October 6-11, 2024.
  2. V. Kammarchedu and A. Ebrahimi, Advancing electrochemical biosensors using machine learning, ACS Fall meeting, Denver, CO, August 18-22, 2024 (Invited)
  3. P. Soltan Khamsi and A. Ebrahimi, Dually Amplified Electrochemical Sensors for Ultrasensitive Detection of Viral Particles, ACS Fall meeting, Denver, CO, August 18-22, 2024
  4. V. Kammarchedu and A. Ebrahimi, Field effect-modulated electrochemistry in 2D material biosensors to tune specificity, ACS Fall meeting, Denver, CO, August 18-22, 2024
  5. V. Kammarchedu, M. AlSiyabi, and A. Ebrahimi, Skin Conformal Force Myography Based on Laser Induced Graphene Strain Sensors, the 245th ECS Meeting, San Fransisco, CA, May 26-30, 2024
  6. A. Ebrahimi, Graphene Electroanalytical Chips: from In Vitro Sensing to Studying Biological Cells, ACS Spring Meeting, New Orleans, LA, March 17-21, 2024 (Invited).
  7. A. Ebrahimi, Printed Electrochemical Devices for Biochemical Sensing and Studying Biological Cells, TMS 2024 Annual Meeting & Exhibition, Orlando, FL, March 3-7, 2024 (Invited).
  8. V. Kammarchedu, D. Butler, P. Soltan Khamsi, and A. Ebrahimi, Facile Functionalization of Graphene to Tune Response of Printed Electrochemical Sensors to Neurotransmitters, the 243rd ECS Meeting, Boston, MA, May 28-June 2, 2023
  9. A. Ebrahimi, Graphene-based Electrochemical Devices for Biosensing and Real-time Cellular Studies, Graphene and Beyond Workshop, May 18-19, 2023 (Invited)
  10. A. Ebrahimi, D. Butler, V. Kammarchedu, and K. Zhou, Printable Electrochemical Biosensors based on 2D and 3D Graphene, AVS 68, Nov. 6-11, 2022 (Invited)
  11. A. Ebrahimi, Electrochemical Biosensors for Label-free Bacterial Analysis, the 241st ECS Meeting, Vancouver, Canada, May 29-June 2, 2022 (Invited)
  12. A. Ebrahimi, From Materials to Devices and Systems for Biosensing: From Small Molecules to Pathogens, North Carolina Central University (NCCU) PREM Seminar Series (Virtual), Oct. 2021 (Invited)
  13. A. Ebrahimi, Biosensors and Bioanalytical Platforms for in Situ Monitoring of Bacterial Phenotypes, the 240th ECS Meeting (Virtual), October 2021 (Invited)
  14. A. Ebrahimi, Investigation and Application of Two-Dimensional Materials in Electrochemical Biosensors, 2DMAT2021 Global Summit and Expo on Graphene and 2D Materials (Virtual), Aug. 2021. (Invited)
  15. K. Zhou, D. Butler, J. Yang, and A. Ebrahimi, A Flexible Electrochemical Biosensor Based on Modified Laser-Induced Graphene for Selective Detection of Phenazines, the 239th ECS Meeting with 18th IMCS Conference (Virtual), June. 2021.
  16. A. Ebrahimi, Tailoring 2D Materials As Artificial Enzymes for Developing Electrochemical Biosensors, the 239th ECS Meeting with 18th IMCS Conference (Virtual), June 2021 (Invited)
  17. A. Ebrahimi, “One-Step, Low-Temperature Annealing of Graphene Ink for Developing Flexible Dopamine Sensors with Record-Low Limit of Detection”, Department of Chemistry and Biochemistry​, California State University Los Angeles (Virtual),​ March 2021 (Invited)
  18. A. Ebrahimi, One-Step Annealing of Graphene Ink for Developing Flexible Dopamine Sensors with Record-Low Limit of Detection, Department of Physics, Applied Physics and Astronomy Colloquia, Rensselaer Polytechnic Institute (Virtual), Feb. 2021 (Invited)
  19. A. Ebrahimi, All-Ink Dopamine Sensors with Ultralow Detection Limit Enabled by One-Step Annealing of Graphene Ink, Graphene & 2D Materials International Conference (GrapheneforUS) (Virtual), Feb. 2021 (Invited)
  20. K. Zhou, C. N. Nunez, V. J. Govindraj, and A Ebrahimi, “In Situ, Label-Free Study of the Correlation Between Mg2+ Uptake Proteins and Motility of Salmonella Typhimurium using Time-Resolved Dynamic Laser Speckle Imaging,” Biophysical Society Meeting (Virtual), Feb. 2021 (proceeding Biophysical Journal 120 (3),156a-157a)
  21. A. Ebrahimi, Impedance-based and Electrochemical Sensors for Label-free and In situ Probing of Bacterial Response to Environmental Stressors, the 15th IEEE NEMS (Virtual), Sep. 2020 (Invited)
  22. D. Butler, C. Sankhe, M. Farell, C. Dong, J. A. Robinson, E. W. Gomez, and A. Ebrahimi, Toward in Situ, Electrochemical Monitoring of Extracellular H2O2 and NO in Cell Cultures Using Graphene Ink and Its Heterostructure with Iron-Sulfide, PRiME (ECS, ECSJ, & KECS Joint Meeting) (Virtual) Oct. 2020
  23. A. Bolotsky, R. Muralidharan, K. Zhou, D. Butler, K. Root, A. Ebrahimi, Reagent-Free Electrochemical Monitoring of Bacterial Viability Using Novel Organic Crystals Deposited on Flexible Substrates, PRiME (ECS, ECSJ, & KECS Joint Meeting) (Virtual), Oct. 2020
  24. D. Butler, J. Robinson, and A. Ebrahimi, Tailoring Surface Chemistry of Graphene Ink for Highly-Sensitive Electrochemical Detection of Dopamine Down to 50 Picomolar, the 237th Electrochemical Society (ECS) and the 18th International Meeting on Chemical Sensors (IMCS 2020) (Virtual), May. 2020
  25. A. Ebrahimi, Novel Rapid Phenotypic Antimicrobial Susceptibility Testing Methods, Department of Veterinary and Biomedical Sciences, Penn State University, Feb. 2020 (VBSC-H 290, guest speaker)
  26. A. Ebrahimi, TrACE-2D: Time-resolved Analysis of Chemicals using Engineered 2D Materials, CBD S&T Conference, Cincinnati, Ohio, Nov. 2019 (Invited by DTRA)
  27. A. Bolotsky and A. Ebrahimi, Toward Rapid Antibacterial Susceptibility Testing Using Electrochemical Biosensors Based on Organic-Inorganic Catalytic Complexes, the 236th Electrochemical Society (ECS) meeting, Atlanta, GA, Oct. 2019
  28. A. Ebrahimi, Probing Bacterial Response to Stress Using Electronic and Electrochemical Sensors, Sensors Summit, San Diego, CA, Dec. 2018 (Invited)
  29. A. Ebrahimi, Materials and Devices for Healthcare applications, Department of Electrical Engineering, Penn State University, Nov. 2018 (EE396, guest speaker)
  30. A. Ebrahimi, On-chip Microbiology and Beyond, Kansas State University, October 2018 (Invited)
  31. C. Dong, D. Deng, K. Zhang, R. Muralidharan, J. Robinson, and A. Ebrahimi, Highly Sensitive Detection of Ascorbic Acid using Electronic Devices based on 2D MoS2, BMES 2018 Annual Meeting, Atlanta, Oct. 2018
  32. R. Muralidharan, J. Noble, C. Zhou, Z. Liu, and A. Ebrahimi, Point-of-Care Detection of Bacterial Viability using Dynamic Laser Speckle Imaging, BMES 2018 Annual Meeting,  Atlanta, Oct. 2018
  33. A. Ebrahimi, Bacterial Cells under Electrochemical Probes, Materials Research Institute Millennium Café Seminar Series, Penn State University, University Park, PA, July 2018 (Invited)
  34. N. Goel, C. Dong, J.A. Robinson, S. Tadigadapa, and A. Ebrahimi, Gel‐integrated impedimetric biosensors based on Au‐Ni microelectrodes enable in situ detection of E. coli metabolism, 28th Anniversary World Congress on Biosensors, Miami, FL, June 2018
  35. A. Ebrahimi, Materials as Artificial Enzymes to study Cellular Biophysics, The Center for 2-Dimensional & Layered Materials, Penn State University, University Park, April 2018 (Invited)
  36. A. Ebrahimi, Electrochemical Biosensors based on Engineered 2D Materials as Artificial Enzymes, Industry Exchange Day, Penn State University, University Park, May 2018 (Invited; selected as one of the top five multi-college research presentations)
  37. A. Ebrahimi, Materials and Devices for Healthcare and Environmental Applications, Department of Biomedical Engineering (Colloquium), Penn State University, University Park, February 2018 (Invited)
  38. A. Ebrahimi, On-chip Analysis of Bacterial Cells and Beyond, Department of Engineering Science and Mechanics (ESC433), Penn State University, University Park, November 2017 (Invited)
  39. A. Ebrahimi, Point-of-Care Devices for Healthcare Research: On-chip Microbiology Analysis, Department of Electrical Engineering (Colloquium), Penn State University, University Park, September 2017 (Invited)
  40. A. Ebrahimi, Rapid diagnostics: When Electrochemical Nanobiosensors probe Pathogens, New York University, New York, March 2017 (Invited)
  41. A. Ebrahimi and M. A. Alam, Impedance spectroscopy of micro-Droplets reveals activation of Bacterial Mechanosensitive Channels in Hypotonic Solutions, American Physical Society (APS) March Meeting, Baltimore, USA, March 2016.
  42. A. Ebrahimi, Droplet-based impedance spectroscopy for highly sensitive biosensing within minutes, Rising Stars in EECS, MIT, Cambridge, MA, November 2015 (Invited).
  43. A. Ebrahimi and M. A. Alam, Incubation-free detection of bacteria cells by using droplet-based impedance sensing, Device Research Conference (DRC), Columbus, Ohio, USA, June 2015.
  44. A. Ebrahimi and M. A. Alam, Evaporation-Enhanced Impedance Sensing for Highly-Sensitive Differentiation of dsDNA from ssDNA, Device Research Conference (DRC), Notre Dame, Indiana, USA, June 2013.