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Aleksandra Drozd-Rzoska

Publications and source records attributed to Aleksandra Drozd-Rzoska.

At least 19 recordsLinked to original sources
arXiv2025

Global Population and Carrying Capacity in the Anthropocene: the Relative Growth Rate Insight

This report provides insights into global population dynamics since the beginning of the Anthropocene, focusing on empirical data and minimizing a priori the impact of model assumptions. It explores the Relative Growth Rate concept, introduced recently to global population studies by Lehman et al. [PNAS 118, e2024150118 (2021)] and subsequently extended to its analytical counterpart [PLoS ONE 20, eo323165 (2025)]. The analysis reveals a general non-monotonic growth pattern in the Anthropocene, emphasizing the uniqueness of the Industrial Revolution era. For the first 290 years, the Doomsday critical scaling provides a superior description for population changes, with a singularity at 2026. This is followed by the crossover to an exceptional 'reversed criticality' patterm, which has held over the last six decades, to the present day. The analysis suggests that the evolution of the human Real Intelligence (RI) population during the Innovations-driven Industrial Revolution times - a period of rapidly increasing connectivity and complexity - can serve as a model counterpart for the puzzling dynamics of Artificial Intelligence (AI) growth. The final conclusion is positive: the catastropic Doomsday singularity can be avoided due to the generic system constraints , both for RI and AI.

physics.soc-ph↗
arXiv2025

Symmetry and Critical Dynamics in Supercooled Liquid Crystals: Insights into the Glass Transition

This study introduces a modeling approach aimed at elucidating the pivotal role of symmetry in phase transitions, focusing specifically on the isotropic-nematic (I-N) transition characteristic of liquid crystal systems. By leveraging insights from the Ising model and incorporating considerations of topological defects, the transition to the glassy state in rod-like molecular systems in the supercooled state is examined. Through a critical-like analysis of the system's dynamical properties, universality classes directly linked to symmetry are discerned. This paper delves into the role of symmetry in the glass transition, as manifested in the generalized critical relation of configurational entropy $S_C(T)=S_0(1-T_K/T)^n$, where the critical exponent $n$ is intricately tied to the system's symmetry. The determined values of the pseudocritical exponent $n$ exhibit universality across the studied systems and demonstrate excellent agreement with thermodynamic data. Furthermore, the congruence between the dynamic representation, as indicated by the primary relaxation time, and the thermodynamic representation, exemplified by the specific heat capacity, underscores the robustness of the findings. The identification of critical-like behavior and the observation of symmetry breaking during the transition to the glass state suggest its intrinsic thermodynamic nature. This work provides a unified framework for understanding the glass transition, bridging dynamic and thermodynamic perspectives through the lens of symmetry.

cond-mat.soft↗
arXiv2024

Verhulst Equation and the Universal Pattern for the Global Population Growth

The global population growth from 10,000 BC to 2023 is discussed within the Verhulst scaling equation and its extensions framework. The analysis focuses on per the capita global population rate coefficient Gp(P)=[dP(t)/P(t)]/dt=dlnP(t)/d, which reveals two linear domains: from 700CE till 1966 and from 1966 till 2023. Such a pattern can be considered a universal reference for reliable scaling relations describing P(t) changes. It is also the distortions-sensitive test indicating domains of their applicability and yielding optimal values of parameters. For models recalling the Verhulst equation, a single pair of growth rate and system capacity coefficients (r,s) should describe global population rise in the mentioned periods. However, the Verhulst equation with such effective parameters does not describe P(t) changes. Notable is the new way of data preparation, based on collecting data from various sources and their numerical filtering to obtain a smooth set of optimal values enabling the derivative-based analysis. The analysis reveals links between P(t) changes and some historical and pre-historical references influencing the global scale.

physics.soc-ph↗
arXiv2023

Broadband dielectric studies in linseed oil: Supercriticality and the New Insight into Melting/Freezing Discontinuous Transition

The long-range supercritical changes of dielectric constant, resembling ones observed in the isotropic phase of rod-like liquid crystalline compounds, are evidenced on approaching liquid-solid discontinuous phase transition. The 'supercriticality' can be an additional factor for supporting the unique pro-health properties of linseed oil. It can also be significant for numerous technological applications. The report also reveals properties significant for melting/freezing discontinuous phase transition cognitive puzzle. Broadband dielectric spectroscopy studies revealed long-range premelting (heating from the solid phase) and post-freezing (cooling from the liquid phase) effects with critical-like parametrizations. They can be correlated with the 'grain model' for premelting and its development by the Lipovsky model. The evidence for the post-freezing effect, with the critical-like portrayal, may indicate a specific granular solidification associated with pretransitional fluctuations. Numerous hallmarks of liquid-liquid and solid-solid phase transitions have also been found. Notably, the melting temperature surrounding is related to the minimum and the freezing temperature to the maximum of dielectric loss factor D=tan(delta). Regarding dynamics, three primary relaxation processes have been found. Their changes in subsequent temperature intervals, related to the apparent activation enthalpy, follow critical-like patterns with the same singular temperature. For relaxation times evolution, it leads to optimal parameterizations via the 'critical and activated' equation, recently proposed.

physics.app-ph↗
arXiv2023

A Critical Insight into Pretransitional Behavior and Dielectric Tunability of Relaxor Ceramics

The model discussion focused on links between the unique properties of relaxor ceramics and the basics of critical phenomena physics and glass transition physics. It indicates the significance of uniaxiality for appearing mean-field features near paraelectric_ferroelectric transition. Pretransitional fluctuations, increasing up to grain size and leading to inter-grain, random, local electric fields, are indicated to be responsible for relaxor ceramics characteristics. Their impacts yield the pseudo spinodal behavior associated with weakly discontinuous local phase transitions. The emerging model redefines the meaning of the Burns temperature and polar nanoregions PNRs. It explains coherently dielectric constant changes with the diffused maximum near paraelectric_ferroelectric transition, the sensitivity even to moderate electric fields, tunability, and the glassy dynamics. These considerations are confronted with experimental results for the complex dielectric permittivity studies in relaxor ceramic, covering the 200K range, from the paraelectric to the deep ferroelectric phase. The distortions-sensitive and derivative-based analysis revealed the preference for the exponential scaling pattern in the paraelectric phase and the surroundings of the paraelectric-ferroelectric transition. It may suggest the Griffith phase behavior associated with the mean-field criticality disturbed by random local impacts. The discussion of experimental results is supplemented by relaxation times changes and the coupled energy losses analysis. The studies also led to the description of tunability temperature changes with scaling relations.

physics.app-ph↗
arXiv2023

The Story about One Island and Four Cities. The Socio-Economic Soft Matter Model - Based Report

The report discusses the emergence of the Socio-Economic Soft Matter (SE-SM) as the result of interactions between physics and economy. First, demographic changes since the Industrial Revolution onset are tested using Soft Matter science tools. Notable in the support of innovative derivative-based and distortions-sensitive analytic tools. It revealed the Weibull type powered exponential increase, with a notably lesser rising rate since the crossover detected near the year 1970. Subsequently, demographic (SE-SM) patterns are tested for Rapa Nui (Easter) Island model case and for four large 'hallmark cities' where the rise and decay phases have occurred. They are Detroit and Cleveland in the USA and Lodz (former textile industry center) and Bytom (former coal mining center) in Poland. The analysis explicitly revealed scaling patterns for demographic changes, influenced by the historical and socio-economic backgrounds and the long-lasting determinism in population changes. Universalistic features of demographic changes are discussed within the Socio-Economic Soft Matter concept.

physics.soc-ph↗
arXiv2022

Continuous Isotropic-Nematic transition in compressed rod-like based nanocolloid

Landau - de Gennes mean field model predicts the discontinuous transition for the Isotropic - Nematic transition, associated with uniaxial and quadrupolar order parameter in three dimensions. This report shows pressure-related dielectric studies for rod-like nematogenic pentylcyanobiphenyl (5CB) and its nanocolloids with BaTiO3 nanoparticles. The scan of dielectric constant revealed the continuous I-N transition in a compressed nanocolloid with a tiny amount of nanoparticles (x=0.1%). For the nematic phase in 5CB and its x=1% nanocolloid the enormous values of dielectric constant and the bending-type long-range pretransitional behavior were detected. The 'shaping' influence of pretransitional fluctuations was also detected for the ionic-related contribution to dielectric permittivity in the isotropic phase. For the high-frequency relaxation domain, this impact was tested for the primary relaxation time and the translational-orientaional decoupling.

cond-mat.soft↗
arXiv2022

Global Population Growth as Socio-Economic Soft Matter System Dynamics Evolution

The report considers the dynamics of the global population as the unique case of the Socio-Economic Soft Matter system. This category was introduced for complex systems dominated by mesoscale assemblies, emerging due to the inherent tendency for local self-organization. The hypothesis is validated by studying population growth evolution using universalistic scaling patterns developed in Soft Matter science. It is supported by the innovative derivative-based and distortions-sensitive analysis, showing the extended Malthus-type trend from 10 000 B till ca. the year 1200. Subsequently, the explicit evidence of the powered exponential population rise pattern is shown, with the unique crossover near 1970. Following this year, the population growth systematically slows down compared to earlier trends. Population growth is confronted with global food demand evolution, which changes and also follows an exponential pattern. The rise of networking and innovations are indicated as the driving force leading to the crossover from the Malthus-type exponential behavior to the powered exponential one. It is supported by the analysis of the number of patents for innovations. The authors introduced the derivative-based and distortions-sensitive analysis for the optimal implementation of the powered exponential function for describing dynamic data.

physics.soc-ph↗
arXiv2022

The impact of ionic contribution to dielectric permittivity in 11CB liquid crystal and its colloids with BaTiO3 nanoparticles

The report shows the temperature behavior of the real part of dielectric permittivity in the static (dielectric constant) and lo-frequency (LF) domains in bulk samples of 11CB and BaTiO3-based nanocolloids. The study covers the Isotropic Liquid (I), Nematic (N), Smectoc A (SmA) and Solid CRystal (Cr) phases. For each phase, the dominance of pretransitional fluctuations, significantly moderated by nanoparticles is shown. The authors consider separate focus on dielectric constant(Eps(T)) evolution in the static domain yielding mainly response from permanent dipole moments and their arrangement and in the low-frequency (LF) domain DeltaEps'(f)=Eps'(f)-Eps(where Eps'(f) is for the real part of dielectric permittivity in the LF domain).which is associated solely with ionic-related polarization mechanism. All these lead to new experimental evidence concerning I-N, N-SmA and SmA-Cr transitions.focusing on the strength and extent of pretransitional effects, critical exponents and phase transition discontinuities. The strong evidence for pretransitional effects near SmA-N transition is notable, particularly regarding DeltaEps'(f,T). Studies are supplemented by DC electric conductivity - the parameter also related to LF domain. Finally, the validity of the relation Eps'(f,T) = Af^(-3/2)+Eps (where f stands for the frequency and A is a constant parameter) often used for discussing dielectric spectra in LC compounds and its nanocollids in the LF domain, is examined.

cond-mat.soft↗
arXiv2022

Pretransitional behavior of electrooptic Kerr effect in liquid thymol

Melting/freezing are canonical examples of discontinuous phase transitions, for which no pretransitional effects in the liquid phase are expected.For the solid phase, weak premelting effects are evidenced. This report shows long-range, critical-like, pretransitional effect in liquid thymol detected in Electrooptic Kerr effect (EKE) studies. Notable is the negative sign of EKE pretransitional anomaly. Studies are supplemented by high-resolution by dielectric constant temperature-related scan, which revealed a weak premelting effect in the solid phase. Both EKE and dielectric constant show a 'crossover' change ca. 10K above the melting temperature. It can be recognized as the hallmark of the challenging Liquid-Liquid transition phenomenon .

cond-mat.soft↗
arXiv2022

Criticality-related fundamental bases for new generations of gas-liquid, liquid-liquid, and liquid (LE) extraction technologies

The report presents results that can be considered as the reference for innovative generations of Supercritical Fluids (SCF), Liquid-Liquid (LL), and Liquid (L) extraction technologies. They are related to implementations of Critical Phenomena Physics for such applications not considered so far. For the gas-liquid critical point, the shift from SuperCritical to SubCritical due to the additional exogenic impact of ultrasounds is indicated. For LL technology, the possibility of increasing process effectiveness when operating near the critical consolute point under pressure is indicated. Finally, the discovery of long-range precritical-type changes of dielectric constant in linseed oil, standing even 50K above the melting temperature, is presented. It suggests that the extraction process linking SCF and L features, and exploring natural carries such as linseed oil, is possible. The report recalls the fundamental base for the extraction process via Kirkwood and Noyes-Withney relations and presents their implementations to critical conditions, including pressure.

cond-mat.soft↗
arXiv2022

New insight into 3-picoline - deuterium oxide (D$_2$O) mixtures of limited miscibility with the lower critical consolute temperature

Coexistence curves in mixtures of limited miscibility with the lower critical consolute temperature (LCT), of 3-picoline with deuterium oxide (D$_2$O), and D2O/H2O have been determined. They were tested with respect to the order parameter, the diameter of the binodal, and coordinates of the critical consolute point (critical temperature Tc and critical concentration fic) Studies were carried out using the innovative method based on the analysis of relative volumes occupied by coexisting phases, yielding high-resolution data. The clear violation of the Cailletet-Mathew law of rectilinear diameter for the LCT mixtures of limited miscibility is evidenced. For the order parameter, the new distortion-sensitive analysis method yielded the evidence for the model-value of the order parameter critical exponent beta = 0.326.up to ca. 1 K from Tc. Finally, the simple & easy method for determining the critical concentration by testing relative volumes of coexisting phases (or alternatively fractional meniscus heights, h) is presented. The significance of the invariant value hc(Tc, fic) = 1/2 is highlighted. The appearance of the milky & bluish critical opalescence is also shown

cond-mat.soft↗
arXiv2022

New scaling paradigm for dynamics in glass-forming systems

The lack of ultimate scaling relations for previtreous changes of the primary relaxation time or viscosity in glass-forming systems constitutes the grand fundamental challenge, also hindering the development of relevant material engineering applications. The report links the problem to the location of the previtreous domain remote from a hypothetical singularity. As the solution, the linearized, distortions-sensitive analysis is proposed. It is developed for scaling-relations linked to basic glass transition models: free volume, entropic, critical-like, avoided criticality, and kinetically constrained approaches. For all model scaling relations their alternative formulations based on fragility, the semi-universal metric of dynamics, are presented. The distortions-sensitive analysis is supplemented by the alternative approach based on the activation energy index showing its relative changes on cooling in the previtreous region. The search for the coherent description of the previtreous dynamics in the homologous series of polyols, from glycerol to sorbitol, is used to present in practice and validate the application of the distortions sensitive analysis. Only two scaling equation, MYEGA and the recent 'activation and critical' (AC), passed such exam. They also revealed a limited reliability of the Stickel operator' analysis for detecting the dynamic crossover. The report constitutes the unique tool-guide for applications, and a checkpoint analysis of the glass transition models. The discussion focuses on the temperature path on cooling but the extension for the still hardly discussed pressure path is also discussed.

cond-mat.soft↗
arXiv2022

Pressure-driven relaxation processes in nanocomposite ionic glass LiFe$_{0.75}$V$_{0.10}$PO$_{4}$

This paper presents results for systems formed in a solid glassy state after nanocrystallization process above the glass temperature. We analyze electric conductivity and relaxation processes after such treatment under high temperature (HT) and high pressure (HP-HT) as well. The latter leads to ca. 8% increase of density, two decades (100) increase of electric conductivity as well as qualitative changes in relaxation processes. The previtreous-type changes of the relaxation time on cooling is analyzed by the use of critical-like and the 'critical-activated' description. Presented results correspond well with obtained for this material and shown in ref. [8]. The evidence for pressure evolution of the glass and crystallization temperatures, indicating the unique possibility of maxima and crossovers is also reported.

cond-mat.mtrl-sci↗
arXiv2022

Strong pretransitional anomaly near glass transition

In this report we present the first ever results of strong pretransitional effect observed for the maximum of absorption peak $${\epsilon}_{max}^{''}(T)$$ in supercooled liquid-crystalline systems near the glass transition temperature. This anomaly may be described by critical-like relation with critical exponent {\alpha}=0.5, which corresponds well with previous results for static electric permittivity $${\epsilon}_{s}(T)$$. Such a behaviour may suggest thermodynamic character of glass transition.

cond-mat.soft↗
arXiv2022

New scaling of Adam-Gibbs relation in glass-forming systems

In this letter we introduced a new scaling method based on Adam-Gibbs model. Moreover, generalised critical-like expression of configurational entropy S_C (T)=S_0 (1-T_K/T)^n is used. Obtained values of pseudocritical exponent n seem to be universal for studied systems and corresponds well with thermodynamic data. Relation between dynamic portrayal represented by primary relaxation time and thermodynamic (specific heat capacity) is in a good agreement.

cond-mat.stat-mech↗
arXiv2018

The new face of the activation volume in glass forming systems

This report proposes the solution of the long standing problem regarding the key property governing the pressure related dynamics in glass forming and complex systems: the determination of the apparent activation volume Va and its pressure dependence. Results are tested in the previtreous domain, up to P ~ 1.2 GPa, for glass forming diisobutyl phthalate (DIIP, low molecular weight liquid), isoctyloxycyanobiphenyl (8*OCB, liquid crystal), bisphenol A/epichlorohydrin (EPON 828, epoxy resin).

physics.chem-ph↗