Dr. Monika Janik Profile

Dr. Monika Janik

Assistant professor

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Author

Publications (12)

Proceedings Article | 13 March 2024 Presentation

Low-volume fluorescence-based heavy metals detection with glass capillary system

Monika Janik, Emil Pituła, Rafał Kasztelanic, Katarzyna Szymańska, Marcin Olszewski, Mateusz Śmietana

Proceedings Volume PC12835, PC128350M (2024) https://doi.org/10.1117/12.3001533

KEYWORDS: Metals, Ions, Capillaries, Water quality, Target detection, Spectroscopy, Silica, Semiconductor lasers, Proteins, Ocean optics

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Proceedings Article | 23 May 2023 Paper

Opto-electrochemical sensing of C-reactive protein using optical fiber lossy-mode resonance sensor

Dariusz Burnat, K. Szot-Karpińska, Petr Sezemsky, Monika Janik, Marcin Koba, Joanna Niedziółka-Jönsson, Viteszlav Stranak, Mateusz Śmietana

Proceedings Volume 12643, 126430X (2023) https://doi.org/10.1117/12.2678113

KEYWORDS: Sensors, Optical fibers, Electrodes, Proteins, Biosensing, Inflammation, Ocean optics, Thin films, Refractive index, Indium

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Proceedings Article | 23 May 2023 Paper

Microcavity in-line Mach-Zehnder interferometer and electrochemical assays combined for cell monitoring system

Tomasz Gabler, Karthika Kappalakandy Valapil, Elżbieta Jarosińska, Andrzej Krześniak, Monika Janik, Marcin Koba, Emilia Witkowska-Nery, Martin Jönsson-Niedziółka, Mateusz Śmietana

Proceedings Volume 12643, 1264312 (2023) https://doi.org/10.1117/12.2679199

KEYWORDS: Electrodes, Optical microcavities, Mach-Zehnder interferometers, Optical sensing, Spectral response, Sensors, Multiplexers, Liquids, Indium, Fabrication

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Proceedings Article | 23 May 2023 Paper

Does the refractive index sensitivity matter the most? Charge of biological material and performance of label-free biosensors

Monika Janik, Paweł Niedziałkowski, Katarzyna Lechowicz, Marcin Koba, Petr Sezemsky, Vitezslav Stranak, Mateusz Śmietana

Proceedings Volume 12643, 1264315 (2023) https://doi.org/10.1117/12.2678085

KEYWORDS: Sensors, Biosensing, Electrodes, Biosensors, Refractive index, Optical properties, Proteins, Biomedical optics

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Proceedings Article | 18 April 2021 Presentation

Effect of pH on optical sensing with poly-L-lysine-modified nanodiamonds

Maciej Glowacki, Monika Janik, Mirosław Sawczak, Anna Wcislo, Pawel Niedzialkowski, Mateusz Ficek, Robert Bogdanowicz

Proceedings Volume 11772, 117720D (2021) https://doi.org/10.1117/12.2589306

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Nitrogen-vacancy (NV) centers are crystallographic defects which provide diamonds with unique physical properties. The centers are known for their intensive, time-stable fluorescence, and an electron spin, which exhibits long coherence time and may be manipulated using external stimuli. Nanodiamonds containing the NV centers are promising tools in biolabeling, biosensing, and drug delivery due to the aforementioned properties of the defects combined with a chemical inertness of a core and an easily functionalized surface of the diamond. Many biochemical reactions are pH-sensitive, therefore, in order to utilize the NV centers for monitoring of such processes, the pH-dependency of the properties of the nanodiamonds needs to be well-understood. Functionalization of the nanodiamonds’ surfaces with biological molecules undergoing pH-triggered changes of conformation, e.g. poly-L-lysine, could not only increase the particles’ biocompatibility and promote cell adhesion, but also possibly enhance pH-sensitivity. In the present study, an impact of pH on the fluorescence, a zeta potential, and a contact angle of the NV centers-containing nanodiamonds dispersed in liquid media is examined. The suspensions were made of commercially available, fluorescent diamond particles in an as-received, unmodified state, and after the poly-L-lysine had been attached to their surfaces via two different procedures – in aqueous, and anhydrous environment. Values of pH of dispersion media were specifically chosen to induce diverse conformation of the poly-L-lysine: from a fully relaxed conformation, through a state of being neither wholly extended, nor helical, to a complete α-helix conformation. The intensity of the photoluminescence emitted by the NV centers has been found to depend on the pH-triggered conformation of the poly-L-lysine attached to the surfaces of the nanodiamonds. The impact of the conformation of the poly-L-lysine on the electric charge of the nanoparticles has also been analyzed. This study confirms the potential of the nitrogen-vacancy centers for optical sensing of pH-triggered processes.

Proceedings Article | 22 February 2018 Presentation + Paper

Near infrared operation of femtosecond laser micro-machined in-fiber Mach Zehnder interferometers for refractive index sensing

Monika Janik, Tinko Eftimov, Marcin Koba, Mateusz Śmietana, Wojtek Bock

Proceedings Volume 10544, 105440F (2018) https://doi.org/10.1117/12.2291120

KEYWORDS: Refractive index, Femtosecond phenomena, Mach-Zehnder interferometers, Sensors, Optical fibers, Mach-Zehnder interferometer, Fiber optics sensors, Micromachining, Interferometers

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Proceedings Article | 23 April 2017 Paper

Combined long-period grating and micro-cavity in-line Mach-Zehnder interferometer for refractive index sensing

Monika Janik, Marcin Koba, Predrag Mikulic, Wojtek Bock, Mateusz Śmietana

Proceedings Volume 10323, 103238R (2017) https://doi.org/10.1117/12.2265961

KEYWORDS: Optical fibers, Cladding, Micromachining, Liquids, Mach-Zehnder interferometers, Refractive index, Sensors, Femtosecond phenomena, Thin films, Single mode fibers

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Proceedings Article | 23 April 2017 Paper

Double resonance long period fiber grating for detection of E. coli in trace concentration by choosing a proper bacteriophage

Y. Chiniforooshan, A. Celebanska, M. Janik, P. Mikulic, F. Haddad, J. Perreault, W. Bock

Proceedings Volume 10323, 103234X (2017) https://doi.org/10.1117/12.2265950

KEYWORDS: Cladding, Signal attenuation, Signal detection, Refractive index, Etching, Bacteria, Fiber optics sensors, Sensors, Biosensors, Contamination

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Proceedings Article | 23 April 2017 Paper

Tuning refractive index sensing properties of micro-cavity in-line Mach-Zehnder interferometer with plasma etching

Monika Janik, Marcin Koba, Wojtek Bock, Mateusz Śmietana

Proceedings Volume 10323, 103238M (2017) https://doi.org/10.1117/12.2265755

KEYWORDS: Etching, Liquids, Micromachining, Wet etching, Reactive ion etching, Mach-Zehnder interferometers, Refractive index, Plasma etching, Femtosecond phenomena, Plasma

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Proceedings Article | 22 December 2016 Paper

Effect of oxygen plasma modification on refractive index sensing with micro-cavity in-line Mach-Zehnder interferometer

Anna Debowska, Magdalena Dominik, Marcin Koba, Monika Janik, Wojtek Bock, Mateusz Śmietana

Proceedings Volume 10175, 101750N (2016) https://doi.org/10.1117/12.2261406

KEYWORDS: Oxygen, Plasma, Liquids, Plasma treatment, Refractive index, Mach-Zehnder interferometers, Optical fibers, Sensors, Structured optical fibers, Plasma etching

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Proceedings Article | 22 December 2016 Paper

Influence of the size of a micro-cavity fabricated in an optical fiber using the femtosecond laser in a form of in-line Mach-Zehnder interferometer on its refractive index sensitivity

Monika Janik, Marcin Koba, Wojtek Bock, Mateusz Śmietana

Proceedings Volume 10175, 101750P (2016) https://doi.org/10.1117/12.2260761

KEYWORDS: Refractive index, Femtosecond phenomena, Optical fibers, Mach-Zehnder interferometers, Liquids, Sensors, Fiber optics sensors, Laser ablation, Optical microcavities, Optics manufacturing

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Proceedings Article | 30 May 2016 Paper

Increased sensitivity of femtosecond laser micro-machined in-fiber Mach-Zehnder interferometer for small-scale refractive index sensing

Anna Dębowska, Marcin Koba, Monika Janik, Wojtek Bock, Mateusz Śmietana

Proceedings Volume 9916, 99160Q (2016) https://doi.org/10.1117/12.2236899

KEYWORDS: Mach-Zehnder interferometers, Refractive index, Optical sensing, Fiber optics sensors, Micromachining, Single mode fibers, Liquids, Microfluidics, Electromagnetism, Beam splitters, Neodymium, Sensors, Glasses

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Showing 5 of 12 publications

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