70 citations · 364 across the 12 of their papers we have counts for
11 papers · 1 filter
Topological defects at smectic interfaces as a potential tool for the biosensing of living microorganisms
Vajra S. Badha, Tagbo H. R. Niepa, Mohamed Amine Gharbi
Characterizing the anchoring properties of smectic liquid crystals (LCs) in contact with bacterial solutions is crucial for developing biosensing platforms. In this study, we inves…
Templated self-assembly of gold nanoparticles in smectic liquid crystals confined at 3D printed curved surfaces
Mackenzie O'Keefe, Jane Bernadette Denise M. Garcia, Abeco J. Rwakabuba +3
The fabrication of assembled structures of topological defects in liquid crystals (LCs) has attracted much attention during the last decade, stemming from the potential application…
Submersed Micropatterned Structures Control Active Nematic Flow, Topology and Concentration
Kristian Thijssen, Dimitrius Khaladj, S. Ali Aghvami +5
Coupling between flows and material properties imbues rheological matter with its wide-ranging applicability, hence the excitement for harnessing the rheology of active fluids for…
Elastocapillary driven assembly of particles at free-standing smectic-A films
Mohamed Amine Gharbi, Daniel A. Beller, Nima Sharifi-Mood +4
Colloidal particles at complex fluid interfaces and within films assemble to form ordered structures with high degrees of symmetry via interactions that include capillarity, elasti…
Curvature-driven, One-step Assembly of Reconfigurable Smectic Liquid Crystal "Compound Eye" Lenses
Francesca Serra, Mohamed A. Gharbi, Yimin Luo +5
Confined smectic A liquid crystals (SmA LCs) form topological defects called focal conic domains (FCDs) that focus light as gradient-index lenses. Here, we exploit surface curvatur…
Shape-controlled orientation and assembly of colloids with sharp edges in nematic liquid crystals
Daniel A. Beller, Mohamed A. Gharbi, Iris B. Liu
The assembly of colloids in nematic liquid crystals via topological defects has been extensively studied for spherical particles, and investigations of other colloid shapes have re…
Focal Conic Flower Textures at Curved Interfaces
Daniel A. Beller, Mohamed A. Gharbi, Apiradee Honglawan +3
Focal conic domains (FCDs) in smectic-A liquid crystals have drawn much attention both for their exquisitely structured internal form and for their ability to direct the assembly o…
Exploiting imperfections: Directed assembly of surface colloids via bulk topological defects
Marcello Cavallaro, Mohamed A. Gharbi, Daniel A. Beller +6
We exploit the long-ranged elastic fields inherent to confined nematic liquid crystals to assemble colloidal particles trapped at the liquid crystal interface into reconfigurable s…
Ring around the colloid
Marcello Cavallaro, Mohamed A. Gharbi, Daniel A. Beller +6
In this work, we show that Janus washers, genus-one colloids with hybrid anchoring conditions, form topologically required defects in nematic liquid crystals. Experiments under cro…
Micro-Bullet Assembly: Interactions of Oriented Dipoles in Confined Nematic Liquid Crystal
Mohamed Amine Gharbi, Marcello Cavallaro, Gaoxiang Wu +4
Microbullet particles, cylinders with one blunt and one spherical end, offer a novel platform to study the effects of anisotropy and curvature on colloidal assembly in complex flui…
Behavior of colloidal particles at an air/nematic liquid crystal interface
M. A. Gharbi, M. Nobili, M. In +4
We examine the behavior of spherical silica particles trapped at an air-nematic liquid crystal interface. When a strong normal anchoring is imposed, the beads spontaneously form va…