Piotr Lesiak
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View article: Polymerization-induced modification of the switching process of a nematic liquid crystal
Polymerization-induced modification of the switching process of a nematic liquid crystal Open
In this paper we demonstrate a method for modification of liquid crystal’s switching process by utilizing selective photopolymerization of a nematic liquid crystal-based composite. The proposed method is based on point-by-point irradiation…
View article: Polymerization-induced modification of the switching process of a nematic liquid crystal
Polymerization-induced modification of the switching process of a nematic liquid crystal Open
In this paper we demonstrate a method for modification of liquid crystal’s switching process by utilizing selective photopolymerization of a nematic liquid crystal-based composite. The proposed method is based on point-by-point irradiation…
View article: Electrical Modification of Self-Assembled Polymer-Stabilized Periodic Microstructures in a Liquid Crystal Composite
Electrical Modification of Self-Assembled Polymer-Stabilized Periodic Microstructures in a Liquid Crystal Composite Open
View article: Dual-Period Polarization-Dependent Diffraction Gratings Based on a Polymer-Stabilized Liquid Crystal
Dual-Period Polarization-Dependent Diffraction Gratings Based on a Polymer-Stabilized Liquid Crystal Open
In this paper, we demonstrate the first ever dual-period diffraction gratings that do not require electrical tuning to obtain the effect of period change. Our method allows for multiplication of the base period by proper modification of th…
View article: Advances in multicomponent systems: Liquid crystal/nanoparticles/polymer
Advances in multicomponent systems: Liquid crystal/nanoparticles/polymer Open
Multicomponent systems based on liquid crystals are of great interest both in the field of scientific research and in the field of practical application. To date, one of the most studied systems are liquid crystal/nanoparticles and liquid …
View article: Dual-Period Polarization-Dependent Diffraction Gratings Based on a Polymer-Stabilized Liquid Crystal
Dual-Period Polarization-Dependent Diffraction Gratings Based on a Polymer-Stabilized Liquid Crystal Open
In this paper we demonstrate first ever dual-period diffraction gratings that do not require electrical tuning to obtain the effect of period change. Our method allows for multiplication of the base period by proper modification of the sub…
View article: Sensors metadane
Sensors metadane Open
Source data for publication: Three-Dimensional-Printed Mechanical Transmission Element with a Fiber Bragg Grating Sensor Embedded in a Replaceable Measuring Head
View article: PLP metadane
PLP metadane Open
Source data for publication: Influence of photopolymerization on propagation properties of photonic crystal fiber infiltrated with a liquid crystal mixture
View article: PLP metadane
PLP metadane Open
Source data for publication: Influence of photopolymerization on propagation properties of photonic crystal fiber infiltrated with a liquid crystal mixture
View article: Sensors metadane
Sensors metadane Open
Source data for publication: Three-Dimensional-Printed Mechanical Transmission Element with a Fiber Bragg Grating Sensor Embedded in a Replaceable Measuring Head
View article: Photopolymerization of 1D photonic structures induced by nematic–isotropic phase transition in liquid crystal
Photopolymerization of 1D photonic structures induced by nematic–isotropic phase transition in liquid crystal Open
Periodic structures can be created in LC-based composite confined in 1D space when it is heated to phase transition temperature. Photopolymerization is used to stabilize the observed anisotropic structures.
View article: Achiral Nanoparticle-Enhanced Chiral Twist and Thermal Stability of Blue Phase Liquid Crystals
Achiral Nanoparticle-Enhanced Chiral Twist and Thermal Stability of Blue Phase Liquid Crystals Open
Blue phase liquid crystals (BPLCs) are chiral mesophases with 3D order, which makes them a promising template for doping nanoparticles (NPs), yielding tunable nanomaterials attractive for microlasers and numerous microsensor applications. …
View article: Influence of photopolymerization on propagation properties of photonic crystal fiber infiltrated with liquid crystal mixture
Influence of photopolymerization on propagation properties of photonic crystal fiber infiltrated with liquid crystal mixture Open
In this paper we analyze the influence of the photopolymerization process on propagation properties of photonic crystal fiber infiltrated with liquid crystal doped with a mixture of reactive monomer and photoinitiator. The obtained results…
View article: Three-Dimensional-Printed Mechanical Transmission Element with a Fiber Bragg Grating Sensor Embedded in a Replaceable Measuring Head
Three-Dimensional-Printed Mechanical Transmission Element with a Fiber Bragg Grating Sensor Embedded in a Replaceable Measuring Head Open
Compliant mechanisms have gained an increasing interest in recent years, especially in relation to the possibility of using 3D printers for their production. These mechanisms typically find applications in precise positioning systems of bu…
View article: Tracking the time evolution of soft matter systems via topological structural heterogeneity
Tracking the time evolution of soft matter systems via topological structural heterogeneity Open
Persistent homology is an effective topological data analysis tool to quantify the structural and morphological features of soft materials, but so far it has not been used to characterise the dynamical behaviour of complex soft matter syst…
View article: Structural heterogeneity: a topological characteristic to track the time evolution of soft matter systems
Structural heterogeneity: a topological characteristic to track the time evolution of soft matter systems Open
We introduce structural heterogeneity, a new topological characteristic for semi-ordered materials that captures their degree of organisation at a mesoscopic level and tracks their time-evolution, ultimately detecting the order-disorder tr…
View article: UV Sensor Based on Fiber Bragg Grating Covered with Graphene Oxide Embedded in Composite Materials
UV Sensor Based on Fiber Bragg Grating Covered with Graphene Oxide Embedded in Composite Materials Open
Polymer–matrix composites degrade under the influence of UV radiation in the range of the 290–400 nm band. The degradation of polymer–matrix composites exposed to UV radiation is characterized by extensive aging of the epoxy matrix, result…
View article: Hybrid Fiber Optic Sensor Systems in Structural Health Monitoring in Aircraft Structures
Hybrid Fiber Optic Sensor Systems in Structural Health Monitoring in Aircraft Structures Open
‘Smart’ structural health monitoring of composite materials with optical fiber sensors is becoming more and more important, especially in the aviation industry. This paper presents an overview of hybrid fiber-optic sensing systems based on…
View article: Polymer Fibers Covered by Soft Multilayered Films for Sensing Applications in Composite Materials
Polymer Fibers Covered by Soft Multilayered Films for Sensing Applications in Composite Materials Open
This paper presents the possibility of applying a soft polymer coating by means of a layer-by-layer (LbL) technique to highly birefringent polymer optical fibers designed for laminating in composite materials. In contrast to optical fibers…
View article: Photonic Liquid Crystal Fibers – 15 years of research activities at Warsaw University of Technology
Photonic Liquid Crystal Fibers – 15 years of research activities at Warsaw University of Technology Open
Research activities in the area of photonic liquid crystal fibers carried out over the last 15 years at Warsaw University of Technology (WUT) have been reviewed and current research directions that include metallic nanoparticles doping to …
View article: Fiber Bragg grating as UVA sensor
Fiber Bragg grating as UVA sensor Open
The idea of this paper implies the possibility to exploit the properties of graphene oxide (GO) to fiber Bragg grating (FBG) UVA radiation sensor design. The idea assumes that a temperature change around the fiber can be induced by UVA rad…
View article: Investigation of strain induced effect on linear shape fiber Bragg grating embedded in composite material
Investigation of strain induced effect on linear shape fiber Bragg grating embedded in composite material Open
In this work experimental results are presented of strain induced effects on a linear shape fiber Bragg grating embedded in a composite material. Mechanical analysis of the composite material has been numerically performed by using commerc…
View article: Innovative UV sensor based on highly birefringent fiber covered by graphene oxide
Innovative UV sensor based on highly birefringent fiber covered by graphene oxide Open
innovative idea of this paper implies the possibility to exploit the properties of graphene oxide (GO) to UV radiation sensor design. idea assumes that a temperature change around the fiber can be induced by UV radiation. Particular atten…