Recruitment

Supervisor: prof. dr hab. Artur Bednarkiewicz
Auxillary supervisor: dr Małgorzata Misiak

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Description:

The rapid progress in molecular diagnostics, systems biology, and precision medicine creates a growing demand for novel biological and biochemical sensors characterized by extreme sensitivity, capable of detecting single-molecule events and ultra‑low analyte concentrations. One of the most promising approaches toward meeting these requirements is the exploitation of nonlinear photophysical processes, in particular avalanche photon emission and Förster Resonance Energy Transfer (FRET).

The objective of this PhD project is to develop and investigate new concepts of ultrasensitive optical sensors in which the detection signal is enhanced by avalanche photon emission processes coupled with FRET mechanisms between appropriately engineered energy donors and acceptors. The synergy between these two phenomena offers the potential for a substantial increase in signal‑to‑noise ratio, reduction of detection limits, and the realization of novel sensing functionalities.

The PhD research will include, in particular:

• design and synthesis of luminescent material systems (inorganic, organic, or hybrid) exhibiting avalanche photon emission,
• investigation of Förster Resonance Energy Transfer mechanisms in systems incorporating biological labels, biomolecules, or chemical probes,
• coupling of avalanche emission processes with FRET to achieve nonlinear amplification of sensing signals,
• optical, temporal, and spectral characterization of the developed systems,
• evaluation of sensitivity, selectivity, and stability of the sensors in biological and biochemical environments,
• proof‑of‑concept demonstrations of sensor performance in selected model applications (e.g., detection of proteins, nucleic acids, metabolites, or ions).

The project will employ advanced experimental and analytical techniques, including:

• absorption and luminescence spectroscopy (steady‑state and time‑resolved),
• characterization of nonlinear optical and avalanche emission processes,
• studies of FRET efficiency and excitation energy transfer kinetics,
• modeling of energy transfer processes and excitation dynamics,
• basic biofunctionalization techniques and preparation of biological samples.

The expected outcome of the project is the development of a new class of ultrasensitive optical sensors based on the synergy of avalanche photon emission and Förster Resonance Energy Transfer, together with an in‑depth understanding of the coupled photonic and biophysical mechanisms governing their operation. The results are anticipated to have high scientific impact and application potential in diagnostics, biosensing, and biomedical photonics.

Candidate profile

The ideal candidate should have:

• an MSc degree in physics, applied physics, optics, materials science, biophysics, or a related engineering discipline,
• basic knowledge in optics, electronics and software development (Matlab, LabView, Phyton)
• strong interest in photophysics, nanomaterials, biosensing, or optics,
• willingness to conduct experimental research and data analysis,
• motivation to work in an interdisciplinary research environment.

Supervisor: dr hab. Paweł Głuchowski, prof. ILT&SR PAS

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Description:

The rapid development of Nd³⁺:YAG based lasers has created a growing demand for efficient and stable saturable absorbers, particularly Cr⁴⁺:YAG materials used for ultrashort pulse generation. Although single crystals of this type have been known and utilized for decades, their properties are still not fully optimized. Limitations such as residual absorption and efficient non-radiative relaxation pathways remain significant technological challenges. This indicates the presence of untapped potential in engineering the local environment of Cr⁴⁺ optical centers.

The proposed PhD project focuses on understanding and controlling the relationship between the local structure of the (CrO₄)^6- center and its spectroscopic and laser properties. Special emphasis will be placed on the influence of structural distortions, symmetry, and lattice interactions on absorption and energy relaxation processes. In contrast to conventional single crystals, nanoceramic materials open entirely new opportunities by enabling precise control over microstructure, defects, and the local environment of active ions, allowing for the rational design of optical properties.

One of the key research directions during the PhD will be the use of pressure effects (either external or internally generated at the microstructural level) to modify the geometry of Cr⁴⁺ centers. This approach provides a unique opportunity to “tune” energy levels, absorption bandwidths, and the efficiency of non-radiative processes—parameters that are critical for the performance of pulsed lasers.

The PhD candidate will be involved in the full research cycle, from the synthesis of nanoceramic laser materials, through advanced structural and spectroscopic characterization, to the analysis of physical mechanisms governing the observed properties. This position offers more than standard laboratory work, it provides an opportunity to conduct research at the interface of advanced materials engineering and solid-state physics, aiming to redefine the performance limits of pulsed laser materials. The project also offers the potential to contribute to the development of next-generation photonic materials and to publish results in high-impact scientific journals.

Supervisor: dr hab. Paweł Głuchowski, prof. ILT&SR PAS

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Description:

The rapid development of advanced water treatment methods is driving growing interest in processes that use light and ultrasound to initiate chemical reactions. Photocatalysis and sonocatalysis, although often studied separately, exhibit strong synergistic potential, the physicochemical foundations of which remain only partially understood. A key yet insufficiently explored issue is the energy transfer between nanostructures active in these processes and its impact on reactive oxygen species generation and the efficiency of organic pollutant degradation.

The aim of this PhD project is to design and synthesize advanced nanostructures (including heterostructures, 2D materials, and composites) that operate efficiently under both photo- and sonocatalytic conditions. Particular emphasis will be placed on identifying and controlling energy transfer mechanisms between material components, such as electron transfer, excitation energy transfer, and processes coupled with cavitation effects induced by ultrasound.

The project involves comprehensive experimental studies, including the synthesis of materials with controlled structure and morphology, their advanced characterization (spectroscopic techniques, electron microscopy, optical property measurements), and the evaluation of catalytic activity in the degradation of organic pollutants in water. A key aspect will be correlating structural and electronic properties with the efficiency of reactive oxygen species generation and the kinetics of degradation reactions.

The PhD candidate will have the opportunity to work at the intersection of materials engineering, physical chemistry, and nanotechnology, developing expertise in the design of functional nanomaterials and the investigation of complex energy transfer processes. The topic aligns with current environmental challenges and offers a real opportunity to contribute to the development of next-generation catalytic technologies and to publish results in high-impact scientific journals.

Supervisor: dr hab. Paweł Głuchowski, prof. ILT&SR PAS

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Description:

The doctoral research will aim to develop a comprehensive understanding of the relationships among the structure of carbon dots (CDs), their electronic properties, and their performance in visible light photocatalytic processes. The study will begin with the controlled synthesis of CDs using various approaches, including hydrothermal, microwave-assisted, and pyrolytic methods, enabling precise control over particle size, degree of graphitization, and surface functionalization. Particular emphasis will be placed on targeted heteroatom doping and the development of complex hybrid systems with semiconductor materials, including TiO₂, ZnO, and g-C₃N₄, allowing for modulation of band structure and redox properties.

A key component of the doctoral work will be advanced physicochemical characterization, encompassing structural, spectroscopic, and electrochemical techniques. The analysis of energy levels, charge carrier recombination dynamics, and the presence of trap states will enable a quantitative correlation between material structure and optoelectronic properties. An important aspect will also be the identification of mechanisms responsible for the enhanced photocatalytic activity, including the extension of the catalytic response under visible-light excitation, charge transfer processes, and the involvement of reactive oxygen species.

The application-oriented studies will cover both the degradation of organic pollutants and more advanced processes, such as photocatalytic hydrogen production and CO₂ reduction. Overall, the project will aim to establish general design principles for carbon dot–based materials that enable controlled red-shifting of light absorption into the visible range and maximization of photocatalytic efficiency.

Supervisor: prof. dr hab. Rafał Wiglusz

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Description:

The main aim of the PhD thesis is to design and develop intelligent three-dimensional (3D) printed block copolymer hydrogel-based biocomposites as a specific scaffold for nanosized phosphates doped with metal ions (e.g., lithium(I) ions) dispersed within them.
The obtained biocomposites will be used in further stages of the project to evaluate regenerative and proliferative properties for nerve cells, such as olfactory cells. In addition, the work will reconstruct the damaged neuronal pathway. The work will focus on obtaining nanosized phosphates doped with various ions, e.g., lithium(I), dispersing them in a block copolymer hydrogel carrier, and evaluating their effects on olfactory cells to stimulate limited nerve regenerative properties and neuronal growth, thereby restoring the sense of smell.

Supervisor: prof. dr hab. Rafał Wiglusz
Auxillary supervisor: dr Adam Watras

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Description:

The main goal of the PhD thesis is to design, synthesize, and investigate the spectroscopic properties of new nanosized systems of mixed fluoride compounds with a fluorite structure of the chemical formula X_1-xZ_xF₂ (where X, Z = Ca²⁺, Sr²⁺ or Ba²⁺ ions) doped and co-doped with lanthanide and alkaline ions (e.g. Li⁺ or Na⁺ ions) in the form of nanomaterials and nanoceramics. The structural and luminescent properties of the obtained materials will be compared to determine the best fit for the desired application.

The investigation will focus on potential applications of nanosized materials as optical sensor agents and nanoceramics as random laser materials. The most crucial aspect of this project is to investigate and explain how the composition and synthesis method of X1-xZxF2 mixed systems, doped and co-doped with rare-earth and alkaline ions, influences the clustering phenomenon.

Supervisor: prof. dr hab. Rafał Wiglusz
Auxillary supervisor: dr Adam Watras

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Description:

The main goal of the PhD thesis is to design, synthesize, and investigate, how the composition of the host material influences the Metal-Metal Charge Transfer (MMCT) process in mixed compounds of the form YV1-x-yPxAsyO4 (0 ≤ x + y ≤ 1) doped with s² ions (Bi³⁺, Sb³⁺, Pb²⁺), transition metals (Mn²⁺, Ti³⁺, Cr⁵⁺), and rare earth metal ions (Ce³⁺, Eu³⁺, Tb³⁺, Pr³⁺).
This PhD thesis will focus on mixed compounds to investigate the role of d0-ion content (V⁵⁺, P⁵⁺, As⁵⁺) in determining the mechanisms and nature of charge-transfer processes between dopant ions and matrix ions. The composition of the matrix alters the strength of the crystal field, a key factor in determining the position of the absorption bands of s2-type ions and transition-metal ions. This research will lead to a better understanding of MMCT processes and other charge transfer mechanisms.

Supervisor: prof. dr hab. Leszek Kępiński
Auxillary supervisor: dr Karolina Ledwa

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Description:

Global warming due to anthropogenic greenhouse gas emissions is our generation's greatest challenge. Carbon dioxide, which is by far the most significant contributor to global warming, is currently considered a promising prospective for potential applications as a raw material for the production of fine chemicals, like hydrocarbons, alcohols, ethers, etc.

The proposed thesis aims to develop well-defined, highly active nanostructured heterogeneous catalysts dedicated to CO₂ hydrogenation into more valuable chemicals. The catalysts will be composed of a high surface area support with well-defined 3D geometry (e.g., amorphous mesoporous support with uniform ordered pores, various types of 3D hierarchical flower-like supports, etc.) as well as optimized chemical composition and structure, and nanosized active phase with uniform particle size distribution (cheap transition metals in mono- or bimetallic configurations). Obtained systems will be characterized using a wide range of experimental methods (electron microscopy, X-ray diffraction, NMR, FTIR, Raman spectroscopy, XPS, gas adsorption, etc.) to find how the catalyst structure, chemical architecture, and geometry influence their chemical properties. Then, the catalytic activity and selectivity of the catalysts will be checked in the appropriate CO₂ hydrogenation process, depending on the chosen active phase activity. An essential step to elucidate the catalysts' behaviour at reaction conditions will be in situ/operando investigations (e.g., in situ TEM and in situ DRIFTS), which are planned to be performed in collaboration with other institutions.

Supervisor: prof. dr hab. Jan Janczak

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Description:

Metal (II) phthalocyanines (for example MgPc, ZnPc, MnPc, FePc, CoPc), although they have been known for several decades, are still of great interest due to their various applications. The properties of metallophthalocyanines of the transition metals, as representatives of the metallophthalocyanine family with the metal at +2 oxidation state, differ significantly from magnesium and zinc phthalocyanine (Mg, d⁰, Zn, d¹⁰) due to the electronic structure of the central ion (Mn²⁺ (Ar)3d⁵; Fe²⁺, (Ar )3d⁶,  Co²⁺, (Ar)3d⁷). The aim of the work will be to obtain and characterize new functionalized metallophthalocyanines by axial coordination of N- and O-donor ligands, their crystallization, performing diffraction measurements on single crystals and carrying out their structural analysis, as well as investigating their optical properties in the so-called "therapeutic window". In addition, performing DFT calculations of the geometry of the obtained derivatives and TD-DFT calculations and correlation with experimental UV-Vis spectra.

Supervisor: dr hab. eng. Daniel Gnida
Auxillary supervisor: dr Piotr Sobora (Wroclaw University)

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Description:

The proposed doctoral project concerns research on superconductivity in high-entropy alloys (HEAs), with particular emphasis on thin films fabricated using pulsed laser deposition (PLD), and on analyzing the relationships between structure, chemical composition, and superconducting properties in strongly disordered multicomponent systems.

The main objective of the research will be the fabrication and characterization of superconducting HEA thin films with controlled composition and microstructure, followed by determining the influence of key technological and structural factors on fundamental superconducting parameters such as the critical field and critical current density. In particular, the effects of substrate temperature, film thickness, lattice strain, thermal treatment, and the presence of defects and pinning centers (both intrinsic and artificially introduced) on magnetic flux pinning mechanisms and current transport will be analyzed.

A second important research direction will involve describing quantum electron transport in these materials, with particular emphasis on the role of structural disorder characteristic of high-entropy alloys. Superconducting fluctuation effects near the critical temperature and their influence on electrical conductivity and the superconducting transition will be examined. This will enable a better understanding of the mechanisms responsible for the stability of the superconducting state in systems with strong lattice and chemical disorder.

The completion of this work will make it possible to establish structure–property relationships in thin-film HEA superconductors and to identify factors that facilitate the optimization of critical parameters. The results will be significant both from the perspective of condensed matter physics and potential technological applications, particularly in the design of a new generation of superconducting materials with high mechanical resistance and stability under extreme conditions.

The research will be carried out in collaboration with Prof. Rafał Idczak from the Institute of Experimental Physics at the University of Wrocław. The planned auxiliary supervisor from the University will be Dr. Piotr Sobota ().

Supervisor: prof. dr hab. Andrzej Jeżowski
Auxillary supervisor: dr Daria Szewczyk

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Description:

The proposed thesis aims identify the possible effect of defects, pressure and chemical composition on diffusional thermal conductivity. The research is based on developing a comprehensive experimental-theoretical universal approach to describe the thermal conductivity κ(T) of solids, based on the multilateral verification of the concepts and predictions of the recently introduced theory of thermal conductivity [Simoncelli-Marzari-Mauri, Nature Physics (2019) https://doi.org/10.1038/s41567-019-0520-x]. With original methods it is expected to find manifestations of quantum tunneling in thermal conductivity according to experimental data. The methodology includes a) the study of isochoric thermal conductivity of disordered molecular crystals, amorphous materials and composites; b) measuring the isobaric thermal conductivity coefficient of highly anisotropic molecular crystals; c) analysis and systematization of literature data with subsequent computer processing on the temperature dependences of the thermal conductivity of complex crystals and amorphous materials. Additional topic targeted in the thesis will be demonstration of the correlation between the boson peak frequency and thermal conductivity of selected systems. Combination of studies on thermal conductivity and heat capacity should result in obtaining universal mutual dependencies.

Supervisor: dr hab. Jacek Ćwik

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Description:

Hydrogen is rapidly becoming the preferred type of fuel; however, its liquefaction using today’s vapor-compression technology is energy‑intensive and costly. Magnetic cooling based on the magnetocaloric effect (MCE) is an energy‑efficient and environmentally friendly alternative, but improving the refrigerant materials is crucial for its success. The magnetic refrigeration method can be applied over a wide temperature range, from very low temperatures up to several hundred Kelvin. An ideal magnetic refrigerant should exhibit sufficiently high magnetocaloric properties across the entire operating temperature range of the system.

The proposed PhD project will involve medium‑ and high‑field magnetic studies of intermetallic lanthanide compounds with the Laves phase structure, i.e., R(Ni_1‑xAl_x)₂ (where R represents selected lanthanides and 0.0 ≤ x ≤ 1.0), with the aim of proposing a multilayer magnetic magnetocaloric material for cryogenic applications. The selected parent compounds forming the basis of the proposed solid solutions display second‑order magnetic phase transitions and exhibit large reversible magnetocaloric effects in the cryogenic temperature range due to the unique properties associated with the highly localized magnetic moments originating from the incompletely filled 4f‑electron shell of rare‑earth atoms, while the Ni and Al atoms in these compounds remain nonmagnetic.

The conducted research will make it possible to propose magnetic refrigerants that may be used in multilayer materials characterized by suitably high, nearly constant MCE values over a broad temperature range.

Supervisor: dr hab. Rafael L. Oliveira

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Description:

Hydrogenation and oxidation of organic compounds correspond to essential reactions in the chemical industry. Traditionally, these reactions are done by stoichiometric amounts (or excess) of toxic reagents such as sodium borohydride as a reduction agent, or potassium permanganate as an oxidizing agent, resulting in processes with low selectivity and the generation of a lot of waste. Thus, these traditional processes are environmentally and economically unsuitable. The use of supported catalysts emerged as an alternative for producing valuable chemicals more sustainably.

The project's main goal is to develop a new class of doped porous carbonaceous materials using diverse techniques such as hard template techniques and post-activation processes. We are also interested in using waste such as glycerol (a by-product of biodiesel synthesis) as a carbon precursor.

After the synthesis of carbon materials, metal nanoparticles (NPS) or clusters will be deposited in this structure, aiming for a strong interaction between the metal NPS and the carbon materials, creating a synergy between them.  These materials will be characterized by many different projects, such as microscopies (TEM and SEM), N₂ physisorption, XRD, XPS, and XAS. 

The prepared materials will be used as catalyst candidates for oxidation reactions (such as selective oxidation of alcohols and alkenes), hydrogenation reactions (CO₂ or biomass compounds), and hydrogen transfer reactions.

Supervisor: dr hab. Rafael L. Oliveira

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Description:

Metal-organic frameworks (MOFs) are highly porous materials composed of metal ions or clusters coordinated with organic ligands. They are known for their exceptional surface area and tunable porosity, making them useful for a variety of applications, including gas storage, separation, and drug delivery.

MOFs can be synthesized in various ways and can include a wide range of metal ions (like zinc, copper, or iron) and organic linkers (such as carboxylates or phosphonates). The unique combination of their structural properties allows researchers to design MOFs for specific tasks, tailoring their chemical and physical properties for optimal performance.

MOF has some limitations related to low stability, which limits their application in catalysis, especially when high pressure, temperature, and the presence of oxidizing or reducing agents are needed. Thus, some researchers suggest the carbonization of these structures, aiming for their use as a catalyst.

There are many ways to prepare carbon materials using MOFs as the precursor, such as direct carbonization, carbonization of MOF with co-precursor, and carbonization of MOF with acid wash. The goal of this project is to synthesize a group of carbonaceous materials where metal clusters or nanoparticles will be immobilized on these carbonaceous structures. Herein, earth-abundant metal oxides such as cobalt, iron, nickel, or copper. These materials will be characterized by many different techniques, such as microscopies (TEM and SEM), N₂ physisorption, XRD, XPS, and XAS. 

The prepared materials will be used as catalyst candidates for oxidation reactions (such as selective oxidation of alcohols and alkenes), hydrogenation reactions (CO₂ or biomass compounds), and hydrogen transfer reactions.