Browsing by Subject "geometry"

Article

Discrete and encapsulated molecular grids: Homometallic Mn15 and heterometallic Mn24Ni2 aggregates

Charalambous, Maria; Zartilas, Sotiris M.; Moushi, Eleni E.; Papatriantafyllopoulou, Constantina; Manos, Manolis J.; Stamatatos, Theocharis C.; Mukherjee, S.; Nastopoulos, Vassilios; Christou, George; Tasiopoulos, Anastasios J. (2014)

Two molecular grid-like clusters are reported, one is a discrete [3 × 5] grid and the other a [3 × 4] grid within a Mn12Ni 2 loop. Both Mn24Ni2 and Mn15 aggregates display novel and aesthetically pleasing structures with ...

Article

Magnetic-field-induced localization in networks with the T3 geometry

Moulopoulos, Konstantinos; Constantinou, Martha G. (2002)

By following an exact analytical procedure we study the transmission properties of a network of quantum wires arranged in a so-called T3 configuration and in the presence of a perpendicular magnetic field. It is shown that ...

Article

Monolayers, bilayers and micelles of zwitterionic lipids as model systems for the study of specific anion effects

Aroti, Andria; Leontidis, Epameinondas; Dubois, M.; Zemb, T.; Brezesinski, G. (2007)

This work is a review of the effect of different monovalent anions (belonging to the Hofmeister series) on a single model amphiphile, phosphatidylcholine molecules in contact with water, in three different geometries, ...

Article

NMR and theoretical investigations on the structures and dynamics of octahedral bis(chelate)dichloro VIII compounds isolated by an unusual reduction of non-oxo VIV species

Rikkou, Maria P.; Manos, Manolis J.; Tolis, Evangelos I.; Sigalas, Michael P.; Kabanos, Themistoklis A.; Keramidas, Anastasios D. (2003)

Reaction of the non-oxo VIV species [VIVCl2(LOO)2] [LOO = acetylacetonate (acac-) or benzoylacetonate (bzac-)] with a chelate nitrogen-donor ligand LNN in acetonitrile leads to the reduction of VIV to VIII and the formation ...

Article

Singlet hydrocarbon carbenes with high barriers toward isomerization: A computational investigation

Nicolaïdes, Andrew N. (2003)

A prerequisite for a stable singlet hydrocarbon carbene is the existence of high barriers toward isomerization. Four derivatives of cyclopentylidene (1-4) with rigid and varying carbon cages are examined computationally ...

Article

Strain-controlled magnetic domain wall propagation in hybrid piezoelectric/ferromagnetic structures

Lei, N.; Devolder, T.; Agnus, G.; Aubert, P.; Daniel, L.; Kim, J. -V; Zhao, W.; Trypiniotis, Theodossis; Cowburn, R. P.; Chappert, C.; Ravelosona, D.; Lecoeur, P. (2013)

The control of magnetic order in nanoscale devices underpins many proposals for integrating spintronics concepts into conventional electronics. A key challenge lies in finding an energy-efficient means of control, as power ...

Article

Stress-mediated progression of solid tumors: effect of mechanical stress on tissue oxygenation, cancer cell proliferation, and drug delivery

Mpekris, F.; Angeli, S.; Pirentis, A. P.; Stylianopoulos, T. (2015)

Oxygen supply plays a central role in cancer cell proliferation. While vascular density increases at the early stages of carcinogenesis, mechanical solid stresses developed during growth compress tumor blood vessels and, ...

Article

Synthesis, structure, and solution dynamics of UO2 2+-hydroxy ketone compounds [UO2(ma)2(H 2O)] and [UO2(dpp)(Hdpp)2(H2O)] ClO4 [ma = 3-hydroxy-2-methyl-4-pyrone, Hdpp = 3-hydroxy-1,2- dimethyl-4(1H)-pyridone]

Drouza, Chryssoula; Gramlich, V.; Sigalas, Michael P.; Pashalidis, Ioannis; Keramidas, Anastasios D. (2004)

293(2) K) are as follows: (1) monoclinic space group C2/c, a = 14.561(7) Å, b = 14.871(9) Å, c = 7.250(4) Å, β = 95.40(4)°, Z = 4