L
Ludwig Galambos
Researcher at Stanford University
Publications - 35
Citations - 1167
Ludwig Galambos is an academic researcher from Stanford University. The author has contributed to research in topics: Visual prosthesis & Photodiode. The author has an hindex of 15, co-authored 32 publications receiving 984 citations.
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Journal ArticleDOI
Photovoltaic retinal prosthesis with high pixel density
Keith Mathieson,James Donald Loudin,Georges Goetz,Philip Huie,Lele Wang,Theodore I. Kamins,Ludwig Galambos,Richard Smith,James S. Harris,Alexander Sher,Daniel Palanker +10 more
TL;DR: A photovoltaic subretinal prosthesis is presented, in which silicon photodiodes in each pixel receive power and data directly through pulsed near-infrared illumination and electrically stimulate neurons.
Journal ArticleDOI
Photovoltaic retinal prosthesis: implant fabrication and performance
Lele Wang,Keith Mathieson,Keith Mathieson,Keith Mathieson,Theodore I. Kamins,James Donald Loudin,Ludwig Galambos,Georges Goetz,Alexander Sher,Yossi Mandel,Philip Huie,Daniel Lavinsky,James S. Harris,Daniel Palanker +13 more
TL;DR: The fabricated device delivers efficient retinal stimulation at safe near-infrared light irradiances without any wired power connections, which greatly simplifies the implantation procedure.
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Cortical responses elicited by photovoltaic subretinal prostheses exhibit similarities to visually evoked potentials
Yossi Mandel,Georges Goetz,Daniel Lavinsky,Philip Huie,Keith Mathieson,Lele Wang,Theodore I. Kamins,Ludwig Galambos,Richard Manivanh,James S. Harris,Daniel Palanker +10 more
TL;DR: Implant-induced eVEP has shorter latency than visible light-induced VEP, its amplitude increases with peak irradiance and pulse duration, and decreases with frequency in the range of 2-20Hz, similar to the visible light response.
Journal ArticleDOI
Domain reversal in stoichiometric LiTaO3 prepared by vapor transport equilibration
TL;DR: In this article, the coercive fields were found to be 1.39±0.01kV∕cm and 1.23± 0.08kV ∕cm for the first poling and the second poling, respectively, indicating a built-in internal field of 0.22kV
Journal ArticleDOI
Photovoltaic Pixels for Neural Stimulation: Circuit Models and Performance
David Boinagrov,Xin Lei,Georges Goetz,Theodore I. Kamins,Keith Mathieson,Ludwig Galambos,James S. Harris,Daniel Palanker +7 more
TL;DR: A model of photovoltaic conversion of pulsed light into pulsed electric current enables optically-activated neural stimulation with miniature wireless implants and evaluates the performance of photvoltaic circuits, including the electrode-electrolyte interface.