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Gdańsk University of Technology

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Publications from the year 2022

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  • Hebb–Wagner polarization method for determining the oxygen ion conductivity in barium cerate-zirconate
    • Tadeusz Miruszewski
    • Kacper Dzierzgowski
    • Piotr Winiarz
    • Sebastian Wachowski
    • Aleksandra Mielewczyk-Gryń
    • Maria Gazda
    2022 Journal of Materials Chemistry A

    In this work, the partial conductivity of oxygen ions in BaCe0.6Zr0.2Y0.2O3 was studied at different temperatures and water partial pressures. For this purpose, a modified DC Hebb–Wagner polarization method with an electrode blocking for protons and electrons was used. A new type of measuring cell as well as a suitable calculation model were proposed for the determination of partial oxygen ionic conductivity in materials with three mobile charge carriers, namely, oxygen ions, protons and electrons. The obtained oxygen ion partial conductivity (σO) in the BaCe0.6Zr0.2Y0.2O3 mixed protonic oxygen ionic–electronic conductor was 2.3 × 10−3 S cm−1 at 800 °C and pO2 = 0.20 atm, pH2O = 0.023 atm. This is in agreement with the literature reports and indicates the feasibility of this method for characterization of mixed-conducting ceramics with unknown oxygen ionic conductivity. The obtained results also indicate the influence of protons on the conduction mechanism of oxygen ions. This information may be very useful for the analysis of the interaction between the charge carriers in mixed conducting materials.

  • High Dynamic Range Microwave Displacement and Rotation Sensors Based on the Phase of Transmission in Groove Gap Waveguide Technology
    • Ali Karami Horestani
    • Zahra Shaterian
    • Michał Mrozowski
    2022 Full text IEEE SENSORS JOURNAL

    This research is focused on the design and realization of displacement sensors in gap waveguide technology. It is shown that with a small but fundamental change in the structure of a conventional gap waveguide, a linear displacement can be sensed. To this end, a unique feature of gap waveguides, i.e. the fact that no electrical connection between the top and bottom parts of the gap waveguide is required, is used. It is further shown that the concept can be also used for the development of rotation sensors. To validate the proposed concept linear and angular displacement sensors are designed and simulated. A prototype of the proposed linear displacement sensor is fabricated for demonstration. Agreement between the computed and measured results validates the concept.

  • High gain/bandwidth off‑chip antenna loaded with metamaterial unit‑cell impedance matching circuit for sub‑terahertz near‑field electronic systems
    • Mohammad Alibakhshikenari
    • Bal S. Virdee
    • Dion Mariyanayagam
    • Valeria Vadala
    • Mohammad Naser-moghadasi
    • Chan Hwang See
    • Iyad Dayoub
    • Sonia Aissa
    • Patrizia Livreri
    • Shah Nawaz Burokur
    • Anna Pietrenko-Dąbrowska
    • Francisco Falcone
    • Sławomir Kozieł
    • Ernesto Limiti
    2022 Full text Scientific Reports

    An innovative off-chip antenna (OCA) is presented that exhibits high gain and efficiency performance at the terahertz (THz) band and has a wide operational bandwidth. The proposed OCA is implemented on stacked silicon layers and consists of an open circuit meandering line. It is shown that by loading the antenna with an array of subwavelength circular dielectric slots and terminating it with a metamaterial unit cell, its impedance bandwidth is enhanced by a factor of two and its gain on average by about 4 dB. Unlike conventional antennas, where the energy is dissipated in a resistive load, the technique proposed here significantly reduces losses. The antenna is excited from underneath the antenna by coupling RF energy from an open-circuited feedline through a slot in the ground-plane of the middle substrate layer. The feedline is shielded with another substrate layer which has a ground-plane on its opposite surface to mitigate the influence of the structure on which the antenna is mounted. The antenna has the dimensions 12.3 × 4.5 × 0.905 mm3 and operates across the 0.137–0.158 THz band corresponding to a fractional bandwidth of 14.23%. Over this frequency range the average measured gain and efficiency are 8.6 dBi and 77%, respectively. These characteristics makes the proposed antenna suitable for integration in sub-terahertz near-field electronic systems such as radio frequency identification (RFID) devices with high spatial resolution.

  • High-conducting Bi4V2-xFexO11-δ ceramics containing Fe2O3 nanocrystals: Structure and properties
    • Natalia Wójcik
    • Katarzyna Polcyn
    • Jakub Karczewski
    • Karolina Górnicka
    • Ryszard Barczyński
    2022 Full text JOURNAL OF THE EUROPEAN CERAMIC SOCIETY

    The topography, structure, thermal, magnetic, and electrical properties of Bi4V2-xFexO11-δ ceramics substituted with x = 0.5 and 0.7 Fe were studied. The microscope analysis showed the presence of iron-rich nanocrystals formed on the Bi-Fe-V-O grains. The X-ray diffraction studies confirmed that grains are built mostly of tetragonal Bi4V1.5Fe0.5O10.5 phase. Thermal properties analysis showed an order-disorder type γ ↔ γʹ phase transition at a temperature of around 916 K, pronounced in samples doped with x = 0.5 Fe. The magnetic anomaly was observed in ceramics doped with x = 0.7 Fe which was assigned to Morin transition of Fe2O3. The conductivity was measured over a wide frequency range from 10 mHz to 1 MHz and at a wide temperature range from 373 to 923 K, using impedance spectroscopy. The D.C. conduction process was due to oxygen vacancies hopping while at low temperatures electron holes hopping is also possible.

  • High-density Polyethylene - Expanded Perlite Composites: Structural Oriented Analysis of Mechanical and Thermomechanical Properties
    • Mateusz Barczewski
    • Aleksander Hejna
    • Paulina Kosmela
    • Olga Mysiukiewicz
    • Adam Piasecki
    • Kamila Sałasińska
    2022 Full text MATERIALE PLASTICE

    As part of this work, research was carried out on the effect of the addition of expanded perlite (PR) on the mechanical and thermomechanical properties of high-density polyethylene (PE) composites. Composites containing from 1 to 10 wt% of the inorganic filler were produced. Polyethylene-based composites manufactured by twin-screw extrusion and formed in the compression molding process were subjected to mechanical, thermomechanical, and structural analyses. The structure of polymer composites and filler was analyzed using scanning electron microscopy (SEM). It has been correlated with the static tensile tests and results of dynamic thermomechanical analysis (DMA). As part of the work, several thermomechanical parameters were calculated, and the obtained results were discussed with the evaluation of interfacial adhesion based on microscopic analysis. The research indicate that despite introducing a 10 wt% of particle-shaped filler, the composites show increased stiffness without noticeable deterioration in tensile strength, simultaneously reducing toughness and brittleness. The analysis of the thermomechanical properties showed the lack of significant effects of the filler influence on the polymer matrix.

  • High-density polyethylene/EPDM rubber blend composites of boron compounds for neutron shielding application
    • Sajith Thottathil Abdulrahman
    • Bindu Patanair
    • Vineeth Puthuparampil Vasukuttan
    • Sabu Thomas
    • Emmanuel Cadel
    • Fabien Cuvilly
    • Allisson Saiter-Fourcin
    • Zakiah Ahmad
    • Maciej Jaroszewski
    • Michal Strankowski
    • David Laroze
    2022 Full text Express Polymer Letters

    Novel materials with neutron shielding property were fabricated by incorporating boron compounds into highdensity polyethylene (HDPE)/Ethylene propylene diene monomer rubber (EPDM) blends. A detailed investigation on the morphological, thermal, mechanical, and neutron attenuation properties of suitable proportion of HDPE/EPDM blend with boric acid (BA), boron carbide (BC), and nano boron carbide (NBC) were performed. Morphology of the 20 wt% of EPDM shows better distribution in HDPE matrix. BA filler is localised in the HDPE phase, while NBC shows uniform distribution in HDPE/EPDM blend compared to its micro counterpart.

  • Higher platelet counts correlate to tumour progression and can be induced by intratumoural stroma in non-metastatic breast carcinomas
    • Natalia Bednarz-Knoll
    • Marta Popęda
    • Tomasz Kryczka
    • Barbara Kozakiewicz
    • Katarzyna Pogoda
    • Jolanta Szade
    • Aleksandra Markiewicz
    • Damian Strzemecki
    • Leszek Kalinowski
    • Jarosław Skokowski
    • Jian Liu
    • Anna Żaczek
    2022 BRITISH JOURNAL OF CANCER

    Background Platelets support tumour progression. However, their prognostic significance and relation to circulating tumour cells (CTCs) in operable breast cancer (BrCa) are still scarcely known and, thus, merit further investigation. Methods Preoperative platelet counts (PCs) were compared with clinical data, CTCs, 65 serum cytokines and 770 immune-related transcripts obtained using the NanoString technology. Results High normal PC (hPC; defined by the 75th centile cut-off) correlated with an increased number of lymph node metastases and mesenchymal CTCs in the 70 operable BrCa patients. Patients with hPC and CTC presence revealed the shortest overall survival compared to those with no CTC/any PC or even CTC/normal PC. Adverse prognostic impact of hPC was observed only in the luminal subtype, when 247 BrCa patients were analysed. hPC correlated with high content of intratumoural stroma, specifically its phenotype related to CD8+ T and resting mast cells, and an increased concentration of cytokines related to platelet activation or even production in bone marrow (i.e. APRIL, ENA78/CXCL5, HGF, IL16, IL17a, MDC/CCL22, MCP3, MMP1 and SCF). Conclusions Preoperative platelets evaluated alone and in combination with CTCs have prognostic potential in non-metastatic BrCa and define patients at the highest risk of disease progression, putatively benefiting from anti-platelet therapy.

  • Highly antifouling polymer-nanoparticle-nanoparticle/polymer hybrid membranes
    • Vahid Vatanpour
    • Maryam Jouyandeh
    • Seyed Soroush Mousavi Khadem
    • Shadi Paziresh
    • Ahmad Dehghan
    • Mohammad Ganjali
    • Hiresh Moradi
    • Somayeh Mirsadeghi
    • Alireza Badiei
    • Muhammad Tajammal Munir
    • Ahmad Mohaddespour
    • Navid Rabiee
    • Sajjad Habibzadeh
    • Amin Hamed Mashhadzadeh
    • Sasan Nouranian
    • Krzysztof Formela
    • Mohammad Saeb
    2022 SCIENCE OF THE TOTAL ENVIRONMENT

    We introduce highly antifouling Polymer-Nanoparticle-Nanoparticle/Polymer (PNNP) hybrid membranes as multi-functional materials for versatile purification of wastewater. Nitrogen-rich polyethylenimine (PEI)-functionalized halloysite nanotube (HNT-SiO2-PEI) nanoparticles were developed and embedded in polyvinyl chloride (PVC) membranes for protein and dye filtration. Bulk and surface characteristics of the resulting HNT-SiO2-PEI nanocomposites were determined using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). Moreover, microstructure and physicochemical properties of HNT-SiO2-PEI/PVC membranes were investigated by scanning electron microscopy (SEM), atomic force microscopy (AFM), and attenuated total reflectance (ATR)-FTIR. Results of these analyses indicated that the overall porosity and mean pore size of nanocomposite membranes were enhanced, but the surface roughness was reduced. Additionally, surface hydrophilicity and flexibility of the original PVC membranes were significantly improved by incorporating HNT-SiO2-PEI nanoparticles. Based on pure water permeability and bovine serum albumin (BSA)/dye rejection tests, the highest nanoparticle-embedded membrane performance was observed at 2 weight percent (wt%) of HNT-SiO2-PEI. The nanocomposite incorporation in the PVC membranes further improved its antifouling performance and flux recovery ratio (96.8%). Notably, dye separation performance increased up to 99.97%. Overall, hydrophobic PVC membranes were successfully modified by incorporating HNT-SiO2-PEI nanomaterial and better-quality wastewater treatment performance was obtained.

  • Highly efficient maximum power point tracking control technique for PV system under dynamic operating conditions
    • Syed Kumayl Raza Moosavi
    • Majad Mansoor
    • Muhammad Hamza Zafar
    • Noman Mujeeb Khan
    • Adeel Mirza
    • Naureen Akhtar
    2022 Full text Energy Reports

    The application of small-scale electrical systems is widespread and the integration of Maximum Power Point Tracking (MPPT) control for Photovoltaic systems with battery applications further enhances the techno-economic feasibility of renewable systems. For this purpose, a novel MPPT control system using Dynamic Group based cooperation optimization (DGBCO) algorithm is utilized for PV systems. The population in the DGBCO is divided into exploration and exploitation groups. Due to effective mathematical modeling, the drawbacks of existing MPPT control techniques are undertaken. The drawbacks of modern MPPT control become prominent under partial shading conditions (PSC) which give rise to power loss, random fluctuations, and slow control action. The DGBCO is implemented using a search and skip mechanism which significantly enhances the performance of the MPPT controller and improves the efficiency of PV systems. The results are compared with recently developed Artificial Bee Colony (ABC), Cuckoo Search Algorithm (CS), DragonFly Optimizer (DFO), and Particle Swarm Optimization (PSO) techniques. The operating conditions case studies include fast varying irradiance and PS with skewed GM. The DGBCO based MPPT control technique is also validated by the experimental setup. The results are compared using statistical and analytical indices such as tracking time, settling time, power tracking efficiency, total energy, RMSE, MAE, and RE. The results show the superior performance of the proposed DGBCO. Relatively, 2%–8% higher energy harvest, and up to 60% faster tracking time helps to achieve up to 99.86% power tracking efficiency in both transient and steady-state control operation. Lower values of statistical metrices i.e. RMSE, MAE, and SR indicate the robustness and effective mathematic modeling of DGBCO for effective MPPT of PV systems under PS conditions.

  • Highly Reliable Passive RFID-Based Inductor–Capacitor Sensory System Strengthened by Solvatochromism for Fast and Wide-Range Lactate Detection
    • Md. Rajibur Rahaman Khan
    • Alireza Khalilian
    • Jungyoon Seo
    • Seungtaek Oh
    • Atul Thakre
    • Tae Kyu An
    • Hwa Sung Lee
    2022 IEEE SENSORS JOURNAL

    A passive radio frequency-identification-based inductor-capacitor (LC) lactate sensory system with a specific dye-containing interdigitated capacitor (IDC) in which the sensing signal is amplified by the solvatochromic effect is proposed. When a lactate solution contacts the IDC of the LC lactate sensor, the capacitance of the IDC changes, changing the resonance frequency of the sensor. This changes the oscillation frequency of the Colpitts oscillator in the readout circuit. By analyzing the frequency changes, the concentration of the lactate solution can be measured quickly and accurately over a wide range. To our knowledge, the proposed device is the first passive, battery-free LC lactate sensor that uses solvatochromic dye-containing IDC sensing elements to detect lactate solution concentrations. Four solvatochromic dyes were tested and incorporated into a polymer as the lactate-sensitive membranes of the IDCs. The proposed LC sensor tag offers excellent sensitivity and linearity over a wide lactate concentration range of about 10μM to 1 M. The response and recovery times of our LC sensory system were significantly shorter than those of previously reported lactate sensors. Our results are useful for the development of reliable wearable devices capable of real-time lactate detection at a low cost.

  • Highly sensitive large strain cellulose/multiwalled carbon nanotubes (MWCNTs)/thermoplastic polyurethane (TPU) nanocomposite foams: From design to performance evaluation
    • Yanpei Fei
    • Ruitao Jiang
    • Wei Fang
    • Tong Liu
    • Mohammad Saeb
    • Aleksander Hejna
    • Morteza Ehsani
    • Mateusz Barczewski
    • S. Mohammad Sajadi
    • Feng Chen
    • Tairong Kuang
    2022 JOURNAL OF SUPERCRITICAL FLUIDS

    Aerogel-based polymer composite foams are promising for large strain piezoresistive sensors, but their aerogel skeleton is partially destroyed during the foaming process, limiting their sensitivity. Herein, the thermoplastic polyurethane was synthesized on the aerogel skeleton to obtain cellulose/multiwalled carbon nanotubes (MWCNTs)/thermoplastic polyurethane (TPU) nanocomposite materials foamed with the aid of supercritical carbon dioxide (ScCO2). A series of lightweight, high strength, and high sensitivity nanocomposite foams were developed, possessing an average diameter of ~9.11 μm and a cell density of 6.84×108 cells/cm3. The mechanical properties, including compressive strength and compressive modulus, were promisingly 5.56 and 28.90 MPa, respectively. Under 50% strain, apparent high repeatability of force-to-electricity conversion behavior was detected in 100 compression cycles.

  • Highly-Miniaturized Dual-Mode Bandpass Filter Based on Quarter-Mode Substrate Integrated Waveguide with Wide Stopband
    • Rusan Kumar Barik
    • Sławomir Kozieł
    • Stanisław Szczepański
    2022 Full text IEEE Access

    This paper presents a novel design of a highly-miniaturized dual-mode bandpass filter (BPF) employing a quarter-mode substrate integrated waveguide (QMSIW). The QMSIW resonator is based on a square cavity with metallic vias along two sides, and open-ended edges at the remaining sides that contain orthogonal feed lines. An open slot is introduced along the two sides of the square cavity with metallic vias to form a magnetic wall. A single metallic via is assigned at the corner of the two open-edged sides to form an electrical wall, which produces different resonances. By loading a slot diagonally, the mode frequencies can be controlled independently, which allows us to realize a second-order BPF. The detailed design steps and a flowchart explaining the filter’s topology evolution are presented. The eigen-mode analysis, field distributions, coupling matrix, and full-wave simulation of the proposed QMSIW filter topology are used to determine the filter’s operating principle. To verify the proposed theory, a second-order BPF is realized, fabricated, and demonstrated experimentally. The BPF prototype exhibits excellent performance such as a small footprint of 0.019λ2, a wide passband of 34.8-percent, low insertion loss of 0.43 dB, and a wide stopband of 3.36f0 with a rejection level greater than 20 dB. Excellent consistency is found between the EM-simulated and measured responses of the device.

  • High-performance anode-supported solid oxide fuel cells with co-fired Sm0.2Ce0.8O2-δ/La0.8Sr0.2Ga0.8Mg0.2O3−δ/Sm0.2Ce0.8O2-δ sandwiched electrolyte
    • Sea-Fue Wang
    • Hsi-Chuan Lu
    • Yung-Fu Hsu
    • Piotr Jasiński
    2022 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

    In this study, intermediate-temperature solid oxide fuel cells (IT-SOFCs) with a nine-layer structure are constructed via a simple method based on the cost-effective tape casting-screen printing-co-firing process with the structure composed of a NiO-based four-layer anode, a Sm0.2Ce0·8O2-δ(SDC)/La0·8Sr0.2Ga0.8Mg0·2O3−δ (LSGM)/SDC tri-layer electrolyte, and an La0·6Sr0·4Co0·2Fe0·8O3-δ (LSCF)-based bi-layer cathode. The resultant SDC (4.14 μm)/LSGM (1.47 μm)/SDC (4.14 μm) tri-layer electrolyte exhibits good continuity and a highly dense structure. The Ro and Rp values of the single cell are observed to be 0.15 and 0.08 Ω cm2 at 800 °C, respectively, and the MPD of the cell is 1.08 Wcm-2. The high MPD of the cell appears to be associate with the significantly lower area-specific resistance and the reasonably high OCV. Compared to those with a similar electrolyte thickness reported in prior studies, the nine-layer anode-supported IT-SOFC with a tri-layer electrolyte developed by the study demonstrates superior cell properties.

  • High-performance graphene-based biosensor using a metasurface of asymmetric silicon disks
    • Mohammad Salemizadeh Parizi
    • Fatemeh Salemizadehparizi
    • Mahdi Molaei Zarasvand
    • Saeed Abdolhosseini
    • Shahram Bahadori-Haghighi
    • Alireza Khalilian
    2022 IEEE SENSORS JOURNAL

    In recent years, optical biosensors widely applicable for medical applications, have received much attention. In this paper, we propose a high-performance polarization-insensitive optical biosensor based on a graphene-dielectric metasurface. The metasurface consists of an asymmetric dielectric disk array that supports a high Q-factor Fano resonance. The provided sharp Fano resonance results in an enhanced light-matter interaction leading to a highly sensitive biosensor. The proposed structure is analyzed using the finite element method and the corresponding transmission and reflection spectra are calculated. According to the presented results, a sensitivity of as high as 550 nm/RIU, linearity R2 value of 0.999 with a figure of merit (FOM) more than 378 RIU-1 around the operating wavelength of 1550 nm are obtained. This is the largest FOM ever reported for a polarization-insensitive biosensor. Such a large FOM accompanied by high sensitivity and linearity make our proposed graphene-based biosensor promising for the effective detection of biomolecules like hemoglobin.

  • High-resolution fire danger forecast for Poland based on the Weather Research and Forecasting Model
    • Alan Mandal
    • Grzegorz Nykiel
    • Tomasz Strzyzewski
    • Adam Kochanski
    • Weronika Wrońska
    • Marta Gruszczynska
    • Mariusz Figurski
    2022 Full text INTERNATIONAL JOURNAL OF WILDLAND FIRE

    Due to climate change and associated longer and more frequent droughts, the risk of forest fires increases. To address this, the Institute of Meteorology and Water Management implemented a system for forecasting fire weather in Poland. The Fire Weather Index (FWI) system, developed in Canada, has been adapted to work with meteorological fields derived from the high-resolution (2.5 km) Weather Research and Forecasting (WRF) model. Forecasts are made with 24- and 48-h lead times. The purpose of this work is to present the validation of the implemented system. First, the results of the WRF model were validated using in situ observations from ~70 synoptic stations. Second, we used the correlation method and Eastaugh’s percentile analysis to assess the quality of the FWI index. The data covered the 2019 fire season and were analysed for the whole forest area in Poland. Based on the presented results, it can be concluded that the FWI index (calculated based on the WRF model) has a very high predictive ability of fire risk. However, the results vary by region, distance from human habitats, and size of fire.

  • High-Speed Binary-to-Residue Converter Design Using 2-Bit Segmentation of the Input Word
    • Robert Smyk
    • Maciej Czyżak
    2022 Full text Scientific Journal of Gdynia Maritime University

    In this paper a new approach to the design of the high-speed binary-to-residue converter is proposed that allows the attaining of high pipelining rates by eliminating memories used in modulo m generators. The converter algorithm uses segmentation of the input binary word into 2-bit segments. The use and effects of the input word segmentation for the synthesis of converters for five-bit moduli are presented. For the number represented by each segment, the modulo m reduction using a segment modulo m generator is performed. The use of 2-bit segments substantially reduces the hardware amount of the layer of input modulo m generators. The generated residues are added using the multi-operand modulo m adder based on the carry-save adder (CSA) tree, reduction of the number represented by the output CSA tree vectors to the 2m range and fast two-operand modulo m additions. Hardware amount and time delay analyses are also included.

  • High-temperature Co-electrolysis of CO2/H2O and direct methanation over Co-impregnated SOEC. Bimetallic synergy between Co and Ni
    • Patryk Błaszczak
    • Marcin Zając
    • Agata Ducka
    • Krzysztof Matlak
    • Barbara Wolanin
    • Sea-Fue Wang
    • Anna Mandziak
    • Beata Bochentyn
    • Piotr Jasiński
    2022 Full text INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

    To study the synergy between the transition metals for enhancing the electrochemical and chemical activity, a series of SOECs were modified with a small amount of Co ions, namely 1.8, 3.6, and 5.4 wt% in the reduced state. The addition of βCD into the precursor solution allowed for extremely fine dispersion of Co species across the Ni-YSZ cermet structure. The sample containing 3.6 wt% Co reached an outstanding over 2.5-times-higher concentration of CH4 in the outlet stream. At the same time, the Co greatly enhanced the electrochemical efficiency of water and CO2 co-electrolysis. Full characterization involving STXM imaging allowed for better understanding of the synergy between the Ni and Co host metal and made it possible to find the causes of the increased activity. It revealed the complexity of the substructures formed within the electrode. A novel discovery was described regarding the NiCo2O4 spinel structure subjected to the O2-TPO measurements. Despite the applied oxidizing atmosphere, the catalyst evolved oxygen at elevated temperatures in a reversible manner. The performance tests indicated the roles of both rWGS and direct electrolysis of CO2 in the electroreduction process. The addition of Co did not influence the prolonged degradation of the cell.

  • Hommage a Profesor Kazimierz Ostrowski. Pamięć obrazów.
    • Jan Buczkowski
    2022

    Impulsem do stworzenia wystawy, było przekazanie Uczelni przez córkę Profesora Kazimierza Ostrowskiego, Panią Honoratę Pilszyk, podobrazi, jakie pozostawił po sobie Mistrz. Były to płótna zagruntowane przez Artystę osobiście, gotowe do dalszej pracy, niektóre z ledwo zaczętym szkicem lub próbą pozostawionego koloru. Gdy zobaczyłem je w pracowni w Gdyni (a było to w 2015 roku), pomyślałem, że te podkłady mogłyby stać się inspiracją do stworzenia nowych prac, rodzaju symbolicznej kontynuacji, dokończenia dzieła przez innych malarzy. Przygotowanie wystawy prac namalowanych przez innych twórców, na płótnach należących do Kazimierza Ostrowskiego, było ideą intrygującą, wartą zaangażowania. Podobrazia dość szybko powędrowały nie tylko do jego absolwentów i przyjaciół, ale także artystów z innych ośrodków, przyjaciół związanych z Galerią Koło (w której prace Profesora prezentowane były na wystawie inaugurującej działalność galerii w 1995 roku). Gest ten został przyjęty z zainteresowaniem jako duże wyzwanie artystyczne. Ponieważ ilość podarowanych „Kachowych” płócien była ograniczona, wracając ponownie do pomysłu realizacji wystawy, postanowiłem ją rozszerzyć. Zaproponowałem udział w wystawie wszystkim pracownikom Wydziału Malarstwa Akademii Sztuk Pięknych w Gdańsku. Celem wystawy jest wyrażenie uznania dla twórczej postawy Kazimierza Ostrowskiego i jego artystycznych zmagań. Jest to także wyzwanie wobec historii i dziedzictwa kultury. Warto przekazywać naszą wspólną historię nowym pokoleniom, które stają się jej symbolicznymi spadkobiercami. Poprzez udział artystów różnych generacji, będziemy mogli przyjrzeć się artystycznym ideom, które mimo pokoleniowych różnic, posiadają wspólny rodowód. Istotny jest także modernistyczny rys w twórczości Profesora i jej relacja z malarstwem współczesnym. Ważną częścią projektu jest wydawnictwo, które zostanie zrealizowane po wystawie. Biorący udział w tym przedsięwzięciu artyści, będą mogli zaprezentować nie tylko swoje dzieła, ale także wspomnienia związane z Profesorem oraz refleksje odnoszące się do czasów studiów na Wydziale Malarstwa. To niecodzienne spotkanie jest dla nas wszystkich okazją, by oddać hołd Profesorowi oraz docenić Jego wiarę w sztukę i przepełnione pasją oddanie profesji malarza.

  • Hommage à Profesor Kazimierz Ostrowski. Pamięć obrazów
    • Krzysztof Wróblewski
    2022

    Impulsem do stworzenia wystawy, było przekazanie Uczelni przez córkę Profesora Kazimierza Ostrowskiego, Panią Honoratę Pilszyk, podobrazi, jakie pozostawił po sobie Mistrz. Były to płótna zagruntowane przez Artystę osobiście, gotowe do dalszej pracy, niektóre z ledwo zaczętym szkicem lub próbą pozostawionego koloru.(...) Przygotowanie wystawy prac namalowanych przez innych twórców, na płótnach należących do Kazimierza Ostrowskiego, było ideą intrygującą, wartą zaangażowania. Podobrazia dość szybko powędrowały nie tylko do jego absolwentów i przyjaciół, ale także artystów z innych ośrodków, przyjaciół związanych z Galerią Koło (w której prace Profesora prezentowane były na wystawie inaugurującej działalność galerii w 1995 roku).(...) Ponieważ ilość podarowanych „Kachowych” płócien była ograniczona, wracając ponownie do pomysłu realizacji wystawy, postanowiłem ją rozszerzyć. Zaproponowałem udział w wystawie wszystkim pracownikom Wydziału Malarstwa Akademii Sztuk Pięknych w Gdańsku. Ważny jest udział w projekcie najmłodszych pracowników Wydziału Malarstwa, którzy nie mieli okazji poznania profesora Kazimierza Ostrowskiego, znają osobę Profesora tylko z opowieści. Celem wystawy jest wyrażenie uznania dla twórczej postawy Kazimierza Ostrowskiego i jego artystycznych zmagań. Jest to także wyzwanie wobec historii i dziedzictwa kultury. (...) Poprzez udział artystów różnych generacji, będziemy mogli przyjrzeć się artystycznym ideom, które mimo pokoleniowych różnic, posiadają wspólny rodowód. Istotny jest także modernistyczny rys w twórczości Profesora i jej relacja z malarstwem współczesnym. (...) Ważną częścią projektu jest wydawnictwo, które zostanie zrealizowane po wystawie. Biorący udział w tym przedsięwzięciu artyści, będą mogli zaprezentować nie tylko swoje dzieła, ale także wspomnienia związane z Profesorem oraz refleksje odnoszące się do czasów studiów na Wydziale Malarstwa. To niecodzienne spotkanie jest dla nas wszystkich okazją, by oddać hołd Profesorowi oraz docenić Jego wiarę w sztukę i przepełnione pasją oddanie profesji malarza. Krzysztof Gliszczyński - kurator wystawy

  • Hopping or Tunneling? Tailoring the Electron Transport Mechanisms through Hydrogen Bonding Geometry in the Boron-Doped Diamond Molecular Junctions
    • Adrian Olejnik
    • Bartłomiej Dec
    • William A. Goddard III
    • Robert Bogdanowicz
    2022 Full text Journal of Physical Chemistry Letters

    Mechanisms of charge transport in molecular junctions involving hydrogen bonds are complex and remain mostly unclear. This study is focused on the elucidation of the electron transfer in a molecular device consisting of two boron-doped diamond interfaces bound with an aromatic linker and a hydrogen bonding surrogating molecule. The projected local density of states (PLODS) analysis coupled with transmission spectra and current−voltage (I−V) simulations show that hydrogen bonding through electron-donating hydroxyl groups in the aromatic linker facilitates electron transfer, while the electron-withdrawing carboxyl group inhibits electron transfer across the junction. Moreover, slight variations in the geometry of hydrogen bonding lead to significant changes in the alignment of the energy levels and positions of the transmission modes. As a result, we observe the switching of the electron transport mechanism from tunneling to hopping accompanied by a change in the shape of the I−V curves and current magnitudes. These results give important information on the tailoring of the electronic properties of molecular junctions.