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Showing 1 to 12 of 31 entries
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Light driven optofluidic switch developed in a ZnO-overlaid microstructured optical fiber.

Optics express

Konidakis I, Konstantaki M, Tsibidis GD, Pissadakis S.
PMID: 26698774
Opt Express. 2015 Nov 30;23(24):31496-509. doi: 10.1364/OE.23.031496.

A great challenge of Optofluidics remains the control of the fluidic properties of a photonic circuit by solely utilizing light. In this study, the development of a ZnO nanolayered microstructured optical fiber (MOF) Fabry-Perot interferometer is demonstrated, along with...

Optical fiber long-period grating humidity sensor with poly(ethylene oxide)/cobalt chloride coating.

Applied optics

Konstantaki M, Pissadakis S, Pispas S, Madamopoulos N, Vainos NA.
PMID: 16799666
Appl Opt. 2006 Jul 01;45(19):4567-71. doi: 10.1364/ao.45.004567.

A long-period fiber grating (LPFG) humidity sensor is reported utilizing poly(ethylene oxide)/cobalt chloride (PEO/CoCl2) as a hybrid hygrosensitive cladding coating. A thin overlay of the material is deposited on the LPFG and with exposure to different ambient humidity levels,...

Organic semiconductor distributed feedback laser fabricated by direct laser interference ablation.

Optics express

Stroisch M, Woggon T, Lemmer U, Bastian G, Violakis G, Pissadakis S.
PMID: 19532640
Opt Express. 2007 Apr 02;15(7):3968-73. doi: 10.1364/oe.15.003968.

We use a pulsed, frequency tripled picosecond Nd:YAG laser for holographic ablation to pattern a surface relief grating into an organic semiconductor guest-host system. The resulting second order distributed feedback lasers exhibit laser action with laser thresholds being comparable...

Excimer laser use for microetching computer-generated holographic structures.

Applied optics

Vainos NA, Mailis S, Pissadakis S, Boutsikaris L, Parmiter PJ, Dainty P, Hall TJ.
PMID: 21127656
Appl Opt. 1996 Nov 10;35(32):6304-19. doi: 10.1364/AO.35.006304.

Excimer-laser microetching of a variety of materials is applied to the fabrication of surface-relief optical microstructures of arbitrary morphology, with particular emphasis on computer-generated holographic structures. High-definition, high-radiation-intensity selective laser ablative etching in conjunction with step-and-repeat (period) replication or...

Whispering gallery mode microsphere resonator integrated inside a microstructured optical fiber.

Optics letters

Kosma K, Zito G, Schuster K, Pissadakis S.
PMID: 23595465
Opt Lett. 2013 Apr 15;38(8):1301-3. doi: 10.1364/OL.38.001301.

A compact and robust scheme for broadband excitation of whispering gallery mode (WGM) resonances into a microsphere is demonstrated. A polymer microsphere (10 μm) is encapsulated into the capillary of a microstructured optical fiber, in direct contact with the...

Differential loss magnetic field sensor using a ferrofluid encapsulated D-shaped optical fiber.

Optics letters

Violakis G, Korakas N, Pissadakis S.
PMID: 29328217
Opt Lett. 2018 Jan 01;43(1):142-145. doi: 10.1364/OL.43.000142.

A ferrofluid immersed, D-shape optical fiber exhibits differential loss up to 12 dB with respect to an azimuthally rotating magnetic field placed around its longitudinal axis, manifested in its measured transmission power. Investigating the magneto induced refractive index and...

A double guidance mechanism, nitroaniline based microstructured optical fiber.

Scientific reports

Violakis G, Pissadakis S.
PMID: 30349019
Sci Rep. 2018 Oct 22;8(1):15586. doi: 10.1038/s41598-018-33855-4.

A new type of all-solid, photonic bandgap fiber exhibiting a wavelength dependent guidance mechanism and second harmonic generation capabilities is presented. A silica glass microstructured optical fiber was infiltrated with 2-methyl 4-nitroaniline for creating the composite material optical fiber....

Twenty four-hour ambulatory blood pressure monitoring and lipid levels before, 3, 6 and 12 months after the onset of hemodialysis in chronic kidney disease patients: a pilot study.

Hippokratia

Vagiona A, Koupidis S, Passadakis P, Thodis E, Vargemezis V.
PMID: 23935271
Hippokratia. 2012 Apr;16(2):154-8.

BACKGROUND: Twenty four-hour ambulatory blood pressure (BP) monitoring (ABPM) is being increasingly used to evaluate the effectiveness of antihypertensive medications. We aimed to to investigate the incidence of "non-dippers" in ESRD patients before, as well after the initiation of...

Photosensitive, all-glass AgPO3/silicaphotonic bandgap fiber.

Optics letters

Konidakis I, Zito G, Pissadakis S.
PMID: 22743434
Opt Lett. 2012 Jul 01;37(13):2499-501. doi: 10.1364/OL.37.002499.

Photonic bandgap (PBG) guidance is observed in a solid core photonic crystal fiber (PCF) consisting of silver metaphosphate (AgPO(3)) glass embedded into a silica cladding, realized by vacuum-assisted infiltration of the molten glass into the hollow channels of a...

Sub-micron periodic structuring of sapphire by laser induced backside wet etching technique.

Optics express

Pissadakis S, Böhme R, Zimmer K.
PMID: 19532373
Opt Express. 2007 Feb 19;15(4):1428-33. doi: 10.1364/oe.15.001428.

The periodic structuring of sapphire, by using laser induced backside wet etching technique (LIBWE) and 266 nm, 150 ps Nd:YAG laser radiation, is demonstrated here for first time. Sub-micron period Bragg reflectors are successfully patterned in sapphire wafers using...

An ethanol vapor detection probe based on a ZnO nanorod coated optical fiber long period grating.

Optics express

Konstantaki M, Klini A, Anglos D, Pissadakis S.
PMID: 22513555
Opt Express. 2012 Apr 09;20(8):8472-84. doi: 10.1364/OE.20.008472.

A new ethanol vapor detection probe based on an optical fiber long period grating overlaid with a zinc oxide (ZnO) nanorods layer is presented. The ZnO nanorod layer was developed onto the cladding of the fiber using aqueous chemical...

The Clinical Impact of Increasing the Hemodialysis Dose.

Hemodialysis international. International Symposium on Home Hemodialysis

Panagoutsos SA, Yannatos EV, Passadakis PS, Thodis ED, Galtsidopoulos OG, Vargemezis VA.
PMID: 28452445
Hemodial Int. 2001 Jan;5(1):51-54. doi: 10.1111/hdi.2001.5.1.51.

Good evidence suggests that improvements in dialysis efficiency reduce morbidity and mortality of hemodialysis (HD) patients. Dialysis efficiency has also been related to better control of arterial blood pressure (BP), anemia, and serum phosphorus levels, and to improvement in...

Showing 1 to 12 of 31 entries