10 OctMaterial Science and Engineering Graduate SeminarNanoengineered Optoelectronic Neural Interfaces
Nanoengineered Optoelectronic Neural Interfaces
  • Prof. Sedat Nizamoglu
  • Assistant Professor, Koc University
  • Thursday, October 10, 2019
  • 04:00 PM - 05:00 PM
  • Auditorium (Room 0215) between building 2 & 3
2019-10-10T16:002019-10-10T17:00Asia/RiyadhNanoengineered Optoelectronic Neural InterfacesMSE Graduate Seminar - MSE 398 - Fall 2019Auditorium (Room 0215) between building 2 & 3Mazen E. Mero

ABSTRACT: Colloidal quantum dots (QDs) offer attractive electronic, optical and surface properties.1 Although the synthesis, electronic structure and optoelectronic applications of quantum dots have been widely explored, little attention has been paid to their potential for neural interfaces. In this talk, I will discuss quantum dot incorporated light-activated neural interfaces that can effectively and safely photostimulate neurons in device architectures.2 I will describe the biointerfaces starting from nanomaterial synthesis upto their application as neurostimulators.3 I will explain our recent findings on the control of Faradaic and capacitive (non-Faradaic) charge transfer mechanisms at nanobiojunctions.4 Moreover, I will demonstrate that the control of charge- and exciton-transfer at nanoscale can led to the photostimulation of neurons at low light intensity levels.5 These findings open-up new approaches towards superior neural prosthesis.


  1. Kotov, N. A.; Winter, J. O.; Clements, I. P.; Jan, E.; Timko, B. P.; Campidelli, S.; Pathak, S.; Mazzatenta, A.; Lieber, C. M.; Prato, M., Nanomaterials for neural interfaces. Adv Mater 2009, 21 (40), 3970-4004.
  2. Bahmani Jalali, H.; Mohammadi Aria, M.; Dikbas, U. M.; Sadeghi, S.; Ganesh Kumar, B.; Sahin, M.; Kavakli, I. H.; Ow-Yang, C. W.; Nizamoglu, S., Effective neural photostimulation using indium-Based type-II quantum dots. ACS nano 2018, 12 (8), 8104-8114. 
  3. Bahmani Jalali, H.; Sadeghi, S.; Sahin, M.; Ozturk, H.; Ow-Yang, C. W.; Nizamoğlu, S., Colloidal Aluminum Antimonide Quantum Dots. Chemistry of Materials 2019.
  4. Aria, M. M.; Srivastava, S. B.; Sekerdag, E.; Dikbas, U. M.; Sadeghi, S.; Pering, S. R.; Cameron, P. J.; Gursoy‐Ozdemir, Y.; Kavakli, I. H.; Nizamoglu, S., Perovskite‐Based Optoelectronic Biointerfaces for Non‐Bias‐Assisted Photostimulation of Cells. Advanced Materials Interfaces 2019, 1900758.
  5. Srivastava, S. B.; Melikov, R.; Aria, M.; Dikbas, U. M.; Kavakali, I. H.; Nizamoglu, S., Band Alignment Engineers Faradaic and Capacitive Photostimulation of Neurons without Surface Modification. Physical Review Applied 2019.

BIOGRAPHY: Sedat Nizamoglu received his B.Sc. degree in Electrical and Electronics Engineering (EEE) in 2005, M. Sc. degree in Physics as a Valedictorian in 2007 and his Ph.D. in EEE in 2011 at Bilkent University. Immediately after graduation, he continued as a research fellow with a joint affiliation with Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital in USA. Before joining Koç University, he was a faculty member at Özyeğin University. His research focuses on the demonstration of innovative optoelectronic devices and interfaces for the applications to energy, medicine, and environment. He has published more than 60 research papers in prestigious journals including Nature Communication, Nature Photonics, Advanced Materials and Nano Letters. He was recognized by MIT Technology Review as Innovator Under 35 Turkey. He received Encouragement Award by TUBITAK (Turkish NRF), Outstanding Young Scientist Award by Turkish Academy of Sciences and Science Academy. In addition, he was awarded an ERC (European Research Council) Starting Grant.  


  • Mazen E. Mero