Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Josiah Firth"'
Autor:
Reem M. Almasri, François Ladouceur, Damia Mawad, Dorna Esrafilzadeh, Josiah Firth, Torsten Lehmann, Laura A. Poole-Warren, Nigel H. Lovell, Amr Al Abed
Publikováno v:
APL Bioengineering, Vol 7, Iss 3, Pp 031503-031503-28 (2023)
Optical-electrode (optrode) arrays use light to modulate excitable biological tissues and/or transduce bioelectrical signals into the optical domain. Light offers several advantages over electrical wiring, including the ability to encode multiple dat
Externí odkaz:
https://doaj.org/article/96babf908b37454794e13fcf2c6e07ec
Autor:
Amr Al Abed, Hrishikesh Srinivas, Josiah Firth, François Ladouceur, Nigel H. Lovell, Leonardo Silvestri
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-16 (2018)
Abstract We propose an optical electrode ’optrode’ sensor array for biopotential measurements. The transduction mechanism is based on deformed helix ferroelectric liquid crystals which realign, altering the optrode’s light reflectance propertie
Externí odkaz:
https://doaj.org/article/e93b9bd01c724a949669ad35b777e33a
Autor:
Yuan Wei, Han Wang, Amr Al Abed, Reem M. Almasri, Xinyue Lei, Josiah Firth, Leonardo Silvestri, Francois Ladouceur, Torsten Lehmann, Nigel H. Lovell
Publikováno v:
Journal of Lightwave Technology. :1-11
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3726d6c3698e79df337ea50ae2cc45a5
https://doi.org/10.1109/jlt.2023.3250827
https://doi.org/10.1109/jlt.2023.3250827
Autor:
Amr Al Abed, Reem Mounzer Almasri, François Ladouceur, Yuan Wei, Torsten Lehmann, Nigel H. Lovell, Han Wang, Laura A. Poole-Warren, Josiah Firth
Publikováno v:
IEEE transactions on bio-medical engineering. 69(5)
Recording and monitoring electrically-excitable cells is critical to understanding the complex cellular networking within organs as well as the processes underlying many electro-physiological pathologies. Biopotential recording using an optical-elect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::424338258d448697dd78e17537c2846c
https://pubmed.ncbi.nlm.nih.gov/34757898
https://pubmed.ncbi.nlm.nih.gov/34757898
Autor:
Amr Al Abed, Yuan Wei, Reem M Almasri, Xinyue Lei, Han Wang, Josiah Firth, Yingge Chen, Nathalie Gouailhardou, Leonardo Silvestri, Torsten Lehmann, François Ladouceur, Nigel H Lovell
Publikováno v:
Journal of Neural Engineering. 19:056031
Objective. Biomedical instrumentation and clinical systems for electrophysiology rely on electrodes and wires for sensing and transmission of bioelectric signals. However, this electronic approach constrains bandwidth, signal conditioning circuit des
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f92c7dbdec9ad6bf6ea482da346a899
https://doi.org/10.1088/1741-2552/ac8ed6
https://doi.org/10.1088/1741-2552/ac8ed6
Autor:
Xinyue Lei, Christoph Wieschendorf, Alexander Fuerbach, Josiah Firth, Leonardo Silvestri, François Ladouceur
Publikováno v:
IEEE Photonics Technology Letters. 31:1409-1412
We report a new method of generating continuous-wave (cw) radiation, Q-Switched as well as mode-locked laser pulses from a single linear fiber laser cavity. The three operating modes can be selected by the electric signal that is applied to an intrac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0000a2106a98fce920d888568a3621bd
https://doi.org/10.1109/lpt.2019.2929553
https://doi.org/10.1109/lpt.2019.2929553
Autor:
Leonardo Silvestri, Han Wang, Yuan Wei, Nigel H. Lovell, Nathalie Gouailhardou, Josiah Firth, Emilie C. M. Revol, Amr Al Abed, François Ladouceur, Torsten Lehmann
Publikováno v:
Clinical and Translational Neurophotonics 2020.
One of the goals of the Neural Engineering System Design (NESD) program in the United States and of similar programs around the world is to develop an interface able to read from one million neurons in parallel. This is well beyond the capabilities o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a457669dac9c9cebdea58ad8189567f
https://doi.org/10.1117/12.2544087
https://doi.org/10.1117/12.2544087
Autor:
Josiah Firth, François Ladouceur, Leonardo Silvestri, Yuan Wei, Alexander Fuerbach, Xinyue Lei, Nigel H. Lovell
Publikováno v:
AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019.
We report on the latest development of our photonics-based brain-machine interface. This work done in collaboration between UNSW and Macquarie University – and supported by the US Office of Naval Research – directly addresses the long-term DARPA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79f7a1ceebf86bc12647a04856a3e198
https://doi.org/10.1117/12.2539894
https://doi.org/10.1117/12.2539894
Autor:
Josiah Firth, Leonardo Silvestri, François Ladouceur, Nigel H. Lovell, Amr Al Abed, Hrishikesh Srinivas
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-16 (2018)
Scientific Reports
Scientific Reports
We propose an optical electrode ’optrode’ sensor array for biopotential measurements. The transduction mechanism is based on deformed helix ferroelectric liquid crystals which realign, altering the optrode’s light reflectance properties, relati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3163d1472540669fa9f81339083fdb50
https://doaj.org/article/e93b9bd01c724a949669ad35b777e33a
https://doaj.org/article/e93b9bd01c724a949669ad35b777e33a
Autor:
Mihai Ciobotaru, Zourab Brodzeli, Leonardo Silvestri, François Ladouceur, Josiah Firth, Toan Phung
Publikováno v:
Sensors and Actuators A: Physical. 268:164-172
We have developed a novel method for measuring electric field strength, and by inference, voltage for high power applications. This is achieved in a contact-less manner using a passive, liquid-crystal based optical device which guarantees galvanic is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c057f4b08057b953cbffd9aa03ee14c6
https://doi.org/10.1016/j.sna.2017.11.015
https://doi.org/10.1016/j.sna.2017.11.015