Phase transitions in nanoconfined binary mixtures of highly oriented colloidal rods

Physical Chemistry Chemical Physics : PCCP
D de las HerasEnrique Velasco

Abstract

We analyse a binary mixture of colloidal parallel hard cylindrical particles with identical diameters but dissimilar lengths L(1) and L(2), with s = L(2)/L(1) = 3, confined by two parallel hard walls in a planar slit-pore geometry, using a fundamental-measure density functional theory. This model presents nematic (N) and two types of smectic (S) phases, with first- and second-order N-S bulk transitions and S-S demixing, and surface behaviour at a single hard wall which includes complete wetting by the S phase mediated (or not) by an infinite number of surface-induced layering (SIL) transitions. In the present paper the effects of confinement on this model colloidal fluid mixture are studied. Confinement brings about profound changes in the phase diagram, resulting from competition between the three relevant length scales: pore width h, smectic period d and length ratio s. Four main effects are identified: (i) second-order bulk N-S transitions are suppressed; (ii) demixing transitions are weakly affected, with small shifts in the mu(1)-mu(2) (chemical potentials) plane; (iii) confinement-induced layering (CIL) transitions occurring in the two confined one-component fluids in some cases merge with the demixing transition; (iv) su...Continue Reading

References

Nov 22, 2002·Physical Review Letters·Marjolein Dijkstra, René van Roij
Aug 9, 2003·Physical Review Letters·S Auer, D Frenkel
Jul 23, 2004·The Journal of Chemical Physics·L SałamachaK Binder
Sep 28, 2004·Physical Review Letters·Marjolein Dijkstra
Feb 9, 2005·Physical Review Letters·D de Las HerasL Mederos
Mar 4, 2005·The Journal of Chemical Physics·L SałamachaK Binder
Feb 21, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·M Tasinkevych, A Ciach
May 30, 2006·The Journal of Chemical Physics·A Patrykiejew, S Sokołowski
Jun 29, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Andrea FortiniMarjolein Dijkstra
Aug 16, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·D de Las HerasL Mederos
Aug 7, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Yuri Martínez-Ratón
May 27, 2008·The Journal of Chemical Physics·José A CapitánJosé A Cuesta
Jul 23, 2008·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Yuri Martínez-RatónJosé A Cuesta
Jan 20, 2009·Science·Thomas J MorrowChristine D Keating
Apr 7, 2010·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Daniel de las HerasEnrique Velasco

❮ Previous
Next ❯

Citations

May 10, 2015·The Journal of Chemical Physics·Thomas GeigenfeindDaniel de Las Heras
Oct 24, 2019·Physical Review. E·Sakine MizaniSzabolcs Varga
Sep 24, 2018·The European Physical Journal. E, Soft Matter·S M Ghazi, R Aliabadi

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

The European Physical Journal. E, Soft Matter
Szabolcs VargaEnrique Velasco
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
D de las HerasEnrique Velasco
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
L Harnau, S Dietrich
Journal of Physics. Condensed Matter : an Institute of Physics Journal
Szabolcs VargaEnrique Velasco
Journal of Colloid and Interface Science
Katarzyna BuciorS Sokołowski
© 2021 Meta ULC. All rights reserved