A5079269481- Diamond and Carbon-based Materials Research
- Carbon Nanotubes in Composites
- Gas Sensing Nanomaterials and Sensors
- Graphene research and applications
- Metal and Thin Film Mechanics
- Force Microscopy Techniques and Applications
- ZnO doping and properties
- High-pressure geophysics and materials
- Organic Electronics and Photovoltaics
- Chalcogenide Semiconductor Thin Films
- Semiconductor materials and devices
- Molecular Junctions and Nanostructures
- Liquid Crystal Research Advancements
- Copper-based nanomaterials and applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Advanced materials and composites
- Porphyrin and Phthalocyanine Chemistry
- Ion-surface interactions and analysis
- 2D Materials and Applications
- Electronic and Structural Properties of Oxides
- Photopolymerization techniques and applications
- Advancements in Transdermal Drug Delivery
- Nonlinear Optical Materials Research
- Osteoarthritis Treatment and Mechanisms
- Molecular spectroscopy and chirality
Poznań University of Technology
2016-2025
Institute of Physics
1995-2017
Kazimierz Wielki University in Bydgoszcz
2012
Szczecin Academy of Arts
1977
Abstract Raman spectroscopy is a most often used standard technique for characterization of different carbon materials. In this work we present the spectra polycrystalline diamond layers quality, synthesized by Hot Filament Chemical Vapor Deposition method (HF CVD). We show how to use analysis bands determine structure films as well amorphous admixture. has become an important CVD films. The first-order peak at ca. 1332 cm −1 unambiguous evidence presence phase in deposited layer. However,...
Agomelatine (AGM) is an effective antidepressant with low oral bioavailability due to intensive hepatic metabolism. Transdermal administration of agomelatine may increase its and reduce the doses necessary for therapeutic effects. However, transdermal delivery requires crossing stratum corneum barrier. For this purpose, use microneedles efficiency administration. The aim study was prepare agomelatine-loaded hydrogel suitable coating drug AGM. optimized formulations were subjected...
In this paper, an overview of the influence various modifications on ZnO-based RRAM has been conducted. Firstly, motivation for creating new memory technology is presented. The resistive switching mechanism explained, including its response to selection active layers and electrodes. A comparison ZnO devices assembled via different deposition methods made. Additional treatment layer electrodes improving performance are reported. This work gives dopants characteristics device. manuscript...
Biomechanical properties of bone depend on the composition and organization collagen fibers. In this study, Raman microspectroscopy was employed to determine content mineral organic constituents orientation fibers in spongy human head femur at microstructural level. Changes structure trabecula were illustrated using spectral mapping. The polarized spectra permit separate analysis local variations composition. ratios ν2PO4 3−/Amide III, ν4PO4 III ν1CO3 2−/ν2PO4 3− are used describe relative...
Raman microspectroscopy was used to examine the biochemical composition and molecular structure of extracellular matrix in spongy subchondral bone collected from patients with clinical radiological evidence idiopathic osteoarthritis hip who underwent a femoral neck fracture, as result trauma, without previous osteoarthritis. The objectives study were determine levels mineralization, carbonate accumulation collagen quality tissue. comparison control subject is less mineralized due decrease...
In this article, we present orientation study of metallophthalocyanine (MPcs) (CoPc, ZnPc, CuPc, and MgPc) thin films deposited on silicon substrate. The MPc's layers were obtained by the quasi-molecular beam evaporation. micro-Raman scattering spectra investigated in spectral range 550-1650 cm-1 using 488 nm excitation wavelength. Raman studies performed at room temperature before after annealing process. Annealing process was carried out 200 °C for 6 h. From polarized surface mapping,...
Abstract The presented article concerns the comparison between two different zinc-oxide structures - bulk crystals and polycrystalline thin films. Bulk were grown by a Bridgman method. For thin-film production, sol-gel spin-coated method was chosen. A part of layers samples annealed in 600 $$^{o}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mi>o</mml:mi> </mml:msup> </mml:math> C to induce recrystallization. morphological structural properties all...
In this article, we present temperature and orientation study of iron phthalocyanine (FePc) thin films with different thickness deposited on silicon substrate. The organic were obtained by the quasi-molecular beam evaporation. micro-Raman scattering spectra FePc layers investigated in spectral range 550–1,800 cm−1 using 488-nm excitation wavelength. Raman atomic force microscopy studies performed at room before after annealing process. Annealing process was carried out 453 K for 6 h. From...
Abstract Bioengineered spider silks are a biomaterial with great potential for applications in biomedicine. They biocompatible,biodegradable and can self-assemble into films, hydrogels, scaffolds, fibers, capsules spheres. A novel, tag-free, bioengineered silk named MS2(9x) was constructed. It is 9-mer of the consensus motif derived from MaSp2–the spidroin Nephila clavipes dragline silk. Thermal acidic extraction methods were used to purify MS2(9x). Both purification protocols gave similar...
Graphene devices require electric contacts with metals, particularly gold. Scanning tunneling spectroscopy studies of electron local density states performed on mono-, bi-, and trigraphene layer deposited metallic Au/Cr/SiO2/Si substrate shows that gold causes the Fermi level shift downwards which means holes are donated by metal to graphene becomes p-type doped. These experimental results in good accordance recently published function theory calculations.
The aim of this study was to investigate the effectiveness Raman spectroscopy in determination changes composition and structure human tooth enamel with caries by use new parameters such as band position, full width at half maximum line shape band. values spectroscopic were obtained analysis scattering spectra. We proposed base diagnosis on several determined simultaneous scattering, Rayleigh fluorescence emission. verified correlations between few selected severity dental caries. spectral...
Thermal-dependent Raman spectral data were analysed to discuss dominant vibrational mode correlations in thin-layered (1L–10L) PtSe 2 -based systems.
Abstract In this paper we present study of cobalt phthalocyanine (CoPc) thin films deposited on quartz and diamond substrates. The different substrates were obtained using chemical vapour deposition method (CVD). micro‐Raman scattering spectra CoPc onto investigated in the spectral range 200 – 1800 cm ‐1 at room temperature for wavelengths excitation (488 nm 785 nm). Raman modes A 1g B are connected with polymorphic metallophthalocyanine phase (α β form). Using confocal surface mapping also...
Taking into account possible irritation of the skin upon contact with naproxen (NPX) crystals and lower bioavailability after administration suspended or ionized drug, aim work was to design characterize novel easy-to-formulate gels entirely dissolved drug in acidic form. The formulations contained ethanol, SynperonicTMPE/L 62 Arlasolve® DMI Transcutol®. Carbopol®940 used as thickener. properties organogels were compared six market products. rheological measurements included steady flow...
The following paper explores the nature of electronic transport in a hybrid carbon nanotube-graphene conductive network. These networks may have tremendous impact on future formation new electrical conductors, batteries, and supercapacitors, as well many other applications. experiments described show that deposition graphene nanoflakes within nanotube network improves both its conductivity current-carrying capacity. They also effectiveness doping is enhanced. To explain effects observed...
TiO2-MoO3 composite systems were successfully prepared using a template-assisted microwave method at molar ratios TiO2:MoO3 = 8:2, 5:5 and 2:8. The synthesized material comprehensively characterized, in terms of their crystalline structure (XRD Raman spectroscopy), morphology (SEM, TEM HRTEM analysis) parameters the porous (low-temperature N2 sorption). materials exhibited highly phases: anatase hexagonal molybdenum trioxide. Moreover, analysis revealed prism particles MoO3 nanocrystalline...