Articles by Thamarasee Jeewandara
Phys.org / Three-dimensional superlattice engineering with block copolymer epitaxy
Three-dimensional (3-D) structures at the nanoscale are important in modern devices, although their fabrication with traditional top-down approaches is complex and expensive. Block copolymers (BCPs) that are analogous to ...
Phys.org / Soft and ion-conducting hydrogel artificial tongue for astringency perception
Artificial tongues have received increased attention due to their ability to detect the five basic tastes, but until now scientists have been unable to fully enable human tongue-like biomimicry for astringency in the lab. ...
Phys.org / White nanolight source for optical nanoimaging
Nanolight sources based on resonant excitons of plasmons near a sharp metallic nanostructure have attracted great interest in optical nanoimaging. However, the resonant phenomenon only works for one type of wavelength that ...
Phys.org / A fractional corner anomaly reveals higher-order topology
Topological insulators (TIs) have an insulating interior and support conducting surface states with additional interfacing properties. The exotic metallic states on their surfaces can provide new routes to generate new phases ...
Phys.org / Extremely brilliant giga-electron-volt gamma rays from a two-stage laser-plasma accelerator
Laser-wakefield accelerators have led to the development of compact, ultrashort X-ray or gamma-ray sources to deliver peak brilliance, similar to conventional synchrotron sources. However, such sources are withheld by low ...
Phys.org / Controlling the zeolite pore interior for chemo-selective alkyne/olefin separations
Organic chemists aim to separate alkenes such as ethylene and propene from alkynes before converting them into polymers. The technique has several drawbacks including hydrogenation of alkynes to produce unwanted alkanes, ...
Phys.org / Manipulating metals for adaptive camouflage
Many species have naturally evolved remarkable strategies to visually adapt to their environments for protection and predation. Researchers have studied adaptive camouflaging in the infrared (IR) spectrum, although the method ...
Phys.org / Large-scale preparation of polymer-based room-temperature phosphorescence via click chemistry
Polymer-based room-temperature phosphorescence (RTP) materials can be efficiently developed by covalently embedding phosphors into the polymer matrix. The process is still, however, highly challenging on a large-scale due ...
Phys.org / Interfacing gene circuits with microelectronics through engineered population dynamics
The ability to detect the growth of a bacterial colony by monitoring changes in impedance (a measure of resistance) across time reflects the impressive scientific progress connecting bacterial behavior with electrodes via ...
Tech Xplore / Flexible low-voltage high-frequency organic thin-film transistors
Electronic applications on unconventional substrates that require low-temperature processing methods have primarily driven the development of organic thin-film transistors (TFTs) in the past few decades. Such applications ...
Phys.org / Topology control of human fibroblast cells monolayer by liquid crystal elastomer
Eukaryotic cells within living tissues can affect important physiological processes such as apoptosis and cell migration based on dynamic pattern formation with spatially varying orientations. However, it is yet challenging ...
Phys.org / Electron microscopy of nanoparticle superlattice formation at a solid-liquid interface in non-polar liquids
Nanoparticle superlattice films that form at the solid-liquid interface are important for mesoscale materials but are challenging to analyze on the onset of formation at a solid-liquid interface. In a new report on Science ...
Phys.org / Nanoscale optical pulse limiter facilitated by refractory metallic quantum wells
In the past several decades, physicists have conducted deep laboratory investigations into nonlinear optics, plasma physics and quantum science using advanced high-intensity, ultrashort-pulse lasers. Increased use of the ...
Phys.org / Intermolecular vibrational energy transfer via microcavity strong light-matter coupling
Strong coupling between cavity photon modes and donor/acceptor molecules can form polaritons (hybrid particles made of a photon strongly coupled to an electric dipole) to facilitate selective vibrational energy transfer ...
Phys.org / Three-dimensional self-assembly using dipolar interaction
In materials science, interactions between dipolar forces of permanent magnets can lead to form one-dimensional chains and rings. In a new report on Science Advances, Leon Abelmann and a research team in electronic components, ...
