G.‐M. Rotaru

Ştefan cel Mare University of Suceava

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

S. G. Lushnikov

Ioffe Institute

René M. Rossi

Swiss Federal Laboratories for Materials Science and Technology

S. N. Gvasaliya

ETH Zurich

B. Roessli

Paul Scherrer Institute

S. Derler

Swiss Federal Laboratories for Materials Science and Technology

Aurelian Rotaru

Ştefan cel Mare University of Suceava

T. A. Shaplygina

Physico-Technical Institute

Adrian Graur

Ştefan cel Mare University of Suceava

R. A. Cowley

University of Oxford

J. Linarès

Universidad Centroamericana José Simeón Cañas

Cooperative Institutions

Swiss Federal Laboratories for Materials Science and Technology

ETH Zurich

Centre National de la Recherche Scientifique

École Polytechnique Fédérale de Lausanne

University of St. Gallen

Paul Scherrer Institute

Université Paris-Saclay

Donghua University

Université de Versailles Saint-Quentin-en-Yvelines

Ştefan cel Mare University of Suceava

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Friction mechanisms and abrasion of the human finger pad in contact with rough surfaces

Tribology International (2015)

S. Derler M. Preiswerk G.‐M. Rotaru J.‐P. Kaiser René M. Rossi

Abrasion (mechanical)

Corneocyte

Agglomerate

Sandpaper

Contact Mechanics

Contact area

10.1016/j.triboint.2014.12.023

Cite

Citations (28)

Diffuse scattering from the lead-based relaxor ferroelectric PbMg_1/3Ta_2/3O₃

Journal of Applied Crystallography (2011)

Antonio Cervellino S. N. Gvasaliya O. Zaharko B. Roessli G.‐M. Rotaru

The relaxor ferroelectric PbMg 1/3 Ta 2/3 O 3 was studied by single-crystal neutron and synchrotron X-ray diffraction, and its detailed atomic structure modelled in terms of static Pb displacements that lead to the formation of polar nanoregions. Similar to the other members of the Pb-based relaxor family like PbMg 1/3 Nb 2/3 O 3 or PbZn 1/3 Nb 2/3 O 3 the diffuse scattering in the [ H 00]/[0 K 0] scattering plane has a butterfly shape around the h 00 Bragg reflections and is orthogonal to the scattering vector for h h 0 peaks. In the [ H H 0]/[00 L ] plane the diffuse scattering is elongated along the 〈112〉 directions and is orthogonal to the scattering vector for h h h reflections. It is found that a model consisting of correlated Pb displacements along the 〈111〉 directions reproduces adequately the main features of the diffuse scattering in PbMg 1/3 Ta 2/3 O 3 when the correlation lengths between the Pb-ion displacement vectors are longest along the 〈111〉 and shortest along the 〈11{\overline 2}〉 and 〈1{\overline 1}0〉 directions.

10.1107/s0021889811012635

Cite

Citations (20)

Relationship Between the Friction and Microscopic Contact Behavior of a Medical Compression Stocking at Different Strains

Tribology Letters (2014)

Wei Ke G.‐M. Rotaru Jiyong Hu Xin Ding René M. Rossi

Strain (injury)

Contact area

10.1007/s11249-014-0422-0

Cite

Citations (8)

A water-responsive, gelatine-based human skin model

Tribology International (2017)

Agnieszka Dąbrowska G.‐M. Rotaru Fabrizio Spano Christian Affolter Giuseppino Fortunato

The properties of human skin strongly depend on hydration. Skin friction, elasticity and roughness change significantly in the presence of water. This paper presents a new bio-mimicking gelatine-based physical skin model that simulates the frictional behaviour of human skin against a widely-used standard textile under dry and wet conditions and over a broad range of applied normal load (0.5–5 N) and amount of water at the interface (0–100 μl/cm2). The proposed skin model shows good agreement with the frictional behaviour of human skin both in dry and wet conditions. In addition, the tensile Young's modulus and surface roughness exhibit changes as a function of the amount of water that are similar to those of human skin. Potential applications of the model are in the testing and development of textile materials that mechanically interact with human skin.

Human skin

Dry skin

Artificial skin

Textile

Elasticity

10.1016/j.triboint.2017.01.027

Cite

Citations (36)

[Changes "in vivo" of alveolar coniphages under the influence of silicon dioxide and polyvinylpyridine-N-oxide].

PubMed (1967)

B Barhad G.‐M. Rotaru L. Petrescu Ioana Lazarescu

Silicon dioxide

Source

Cite

Citations (1)

Spin-glass state and long-range magnetic order inPb(Fe1/2Nb1/2

Physical Review B (2009)

G.‐M. Rotaru B. Roessli A. Amato S. N. Gvasaliya Christopher Mudry

We have investigated the magnetic ground state of the multiferroic relaxor ferroelectric $\text{Pb}({\text{Fe}}_{1/2}{\text{Nb}}_{1/2}){\text{O}}_{3}$ with $\ensuremath{\mu}\text{SR}$ spectroscopy and neutron scattering. We find that a transition to a partially disordered phase occurs below $T=20\text{ }\text{K}$ that coexists with long-range antiferromagnetic ordering. The disordered phase resembles a spin glass. No clustering of magnetic ions could be evidenced by $\ensuremath{\mu}\text{SR}$ so that the coexistence appears homogeneous in the sample.

10.1103/physrevb.79.184430

Cite

Citations (65)

In Vivo Measurement of the Friction Between Human Skin and Different Medical Compression Stockings

Tribology Letters (2015)

Wei Ke G.‐M. Rotaru Jiyong Hu René M. Rossi Xin Ding

Compression stockings

Base (topology)

10.1007/s11249-015-0580-8

Cite

Citations (10)

Influence of intermolecular interactions and size effect on LITH-FORC diagram in 1D spin crossover compounds

Journal of Optoelectronics and Advanced Materials (2012)

Aurelian Rotaru Adrian Graur G.‐M. Rotaru J. Linarès Yann Garcia

The First-order Reversal Curve (FORC) method is employed to analyze the influence of intermolecular interactions and particle size effect on Light-induced Thermal Hysteresis (LITH) behaviour of 1D spin crossover systems. We have used atom-phonon coupling model in order to simulate LITH-FORC diagrams with different interactions strengths and various amounts of molecules. The obtained FORC diagrams are rather different, which make this method a very powerful characterization tool. Finally, a comprehensive image of the particle size and interaction influence on the statistical parameters characterizing the LITH-FORC diagram is presented.

Source

Cite

Citations (6)

Materials used to simulate physical properties of human skin

Skin Research and Technology (2015)

Agnieszka Dąbrowska G.‐M. Rotaru S. Derler Fabrizio Spano Martin Camenzind

For many applications in research, material development and testing, physical skin models are preferable to the use of human skin, because more reliable and reproducible results can be obtained.This article gives an overview of materials applied to model physical properties of human skin to encourage multidisciplinary approaches for more realistic testing and improved understanding of skin-material interactions.The literature databases Web of Science, PubMed and Google Scholar were searched using the terms 'skin model', 'skin phantom', 'skin equivalent', 'synthetic skin', 'skin substitute', 'artificial skin', 'skin replica', and 'skin model substrate.' Articles addressing material developments or measurements that include the replication of skin properties or behaviour were analysed.It was found that the most common materials used to simulate skin are liquid suspensions, gelatinous substances, elastomers, epoxy resins, metals and textiles. Nano- and micro-fillers can be incorporated in the skin models to tune their physical properties.While numerous physical skin models have been reported, most developments are research field-specific and based on trial-and-error methods. As the complexity of advanced measurement techniques increases, new interdisciplinary approaches are needed in future to achieve refined models which realistically simulate multiple properties of human skin.

Human skin

Artificial skin

Skin equivalent

10.1111/srt.12235

Cite

Citations (207)

Changes in vivo in alveolar macrophages after injection of silica and poly-2-vinylpyridine N-oxide.

B Barhad G.‐M. Rotaru L. Petrescu Ioana Lazarescu

Source

Cite

Citations (0)