Doped Nanocrystalline Diamond Films as Reflective Layers for Fiber-Optic Sensors of Refractive Index of Liquids

Kosowska, Monika; Majchrowicz, Daria; Sankaran, Kamatchi Jothiramalingam; Ficek, Mateusz; Haenen, Ken; Jędrzejewska‐Szczerska, Małgorzata

doi:10.3390/ma12132124

Cited by 21 publications

(20 citation statements)

References 23 publications

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“…Our previous research on fiber-optic sensors presented a measurement module employing boron-doped diamond (BDD) film as a mirror 27 , 28 . The results demonstrate that optical spectra are modulated by changes in the refractive index of the investigated liquid inside the cavity bounded by the BDD film, and by the change in the cavity length comprised of the investigated liquid.…”

Section: Introductionmentioning

confidence: 99%

Low-coherence photonic method of electrochemical processes monitoring

Kosowska

Jakóbczyk

Rycewicz

et al. 2021

Sci Rep

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We present an advanced multimodality characterization platform for simultaneous optical and electrochemical measurements of ferrocyanides. Specifically, we combined a fiber-optic Fabry–Perot interferometer with a three-electrode electrochemical setup to demonstrate a proof-of-principle of this hybrid characterization approach, and obtained feasibility data in its monitoring of electrochemical reactions in a boron-doped diamond film deposited on a silica substrate. The film plays the dual role of being the working electrode in the electrochemical reaction, as well as affording the reflectivity to enable the optical interferometry measurements. Optical responses during the redox reactions of the electrochemical process are presented. This work proves that simultaneous opto-electrochemical measurements of liquids are possible.

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Section: Introductionmentioning

confidence: 99%

Low-coherence photonic method of electrochemical processes monitoring

Kosowska

Jakóbczyk

Rycewicz

et al. 2021

Sci Rep

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“…Exploiting the mentioned outstanding properties of diamond, as well as its biocompatibility, diamond films grown on silicon substrate have been used as reflective layers for fiber-optic displacement sensors, showing their performance in the range of 0–600 μm [ 40 ]. In addition, recent works report novel application of thin nitrogen-doped and boron-doped nanocrystalline diamond films on silicon as reflective surfaces in an interferometric sensor dedicated to measuring refractive indices of liquids [ 41 ]. Moreover, it is worth citing that optical interferometry, successfully applied to in situ monitoring of electropolymerization of melamine at the boron-doped nanocrystalline diamond electrode surface, represents a powerful technique for interactions occurring on the surface of the electrode during electrochemical reactions [ 42 ].…”

Section: Introductionmentioning

confidence: 99%

Thin Diamond Film on Silicon Substrates for Pressure Sensor Fabrication

et al. 2020

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Thin polycrystalline diamond films chemically vapor deposited on thinned silicon substrates were used as membranes for pressure sensor fabrication by means of selective chemical etching of silicon. The sensing element is based on a simple low-finesse Fabry–Pérot (FP) interferometer. The FP cavity is defined by the end-face of a single mode fiber and the diamond diaphragm surface. Hence, pressure is evaluated by measuring the cavity length by an optoelectronic system coupled to the single mode fiber. Exploiting the excellent properties of Chemical Vapor Deposition (CVD) diamond, in terms of high hardness, low thermal expansion, and ultra-high thermal conductivity, the realized sensors have been characterized up to 16.5 MPa at room temperature. Preliminary characterizations demonstrate the feasibility of such diamond-on-Si membrane structure for pressure transduction. The proposed sensing system represents a valid alternative to conventional solutions, overcoming the drawback related to electromagnetic interference on the acquired weak signals generated by standard piezoelectric sensors.

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“…It can also work as a reflective layer when doped with other materials, e.g. boron, nitrogen [15][16][17] . Diamond is also characterized by its excellent mechanical and chemical properties, as well as biocompatibility.…”

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Microscale diamond protection for a ZnO coated fiber optic sensor

Kosowska

Listewnik

Majchrowicz

et al. 2020

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Fiber optic sensors are widely used in environmental, biological and chemical sensing. Due to the demanding environmental conditions in which they can be used, there is a risk of damaging the sensor measurement head placed in the measuring field. Sensors using nanolayers deposited upon the fiber structure are particularly vulnerable to damage. A thin film placed on the surface of the fiber end-face can be prone to mechanical damage or deteriorate due to unwanted chemical reactions with the surrounding agent. In this paper, we investigated a sensor structure formed with a Zinc Oxide (ZnO) coating, deposited by Atomic Layer Deposition (ALD) on the tip of a single-mode fiber. A nanocrystalline diamond sheet (NDS) attached over the ZnO is described. The diamond structure was synthesized in a Microwave Plasma Assisted Chemical Vapor Deposition System. The deposition processes of the nanomaterials, the procedure of attaching NDS to the fiber end-face covered with ZnO, and the results of optical measurements are presented.

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Doped Nanocrystalline Diamond Films as Reflective Layers for Fiber-Optic Sensors of Refractive Index of Liquids

Cited by 21 publications

References 23 publications

Low-coherence photonic method of electrochemical processes monitoring

Low-coherence photonic method of electrochemical processes monitoring

Thin Diamond Film on Silicon Substrates for Pressure Sensor Fabrication

Microscale diamond protection for a ZnO coated fiber optic sensor

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