Articles by Thamarasee Jeewandara
Phys.org / Quantizing single-molecule surface enhanced Raman Scattering with DNA origami metamolecules
Tailored metal nanoclusters can be actively developed in the lab to manipulate light at the subwavelength scale for nanophotonic applications. However, their precise molecular arrangement in a hotspot with fixed numbers and ...
Phys.org / Observations of Rydberg exciton polaritons and their condensate in a perovskite cavity
In quantum physics, Rydberg excitons with high principal value can exhibit strong dipole-dipole interactions. However, polaritons (quasiparticles) with an excitonic constituent in an excited state, known as Rydberg exciton ...
Phys.org / Electrostatically controlled surface boundary conditions in nematic liquid crystals and colloids
Liquid crystals differ from isotropic fluids (fluids with similar properties in different directions) to exhibit highly anisotropic (varying properties in different directions) interactions with surfaces. In a new report ...
Phys.org / Multimodal X-ray and electron microscopy of the Allende meteorite
Multimodal microscopy can combine complementary nanoscale imaging techniques to extract comprehensive information on the chemical, structural and functional aspects of heterogenous samples. X-ray microscopy can achieve high-resolution ...
Phys.org / Quantum Hall-based superconducting interference device
In a recent report published on Science Advances, Andrew Seredinski and co-workers presented a graphene-based Josephson junction with dedicated side gates fabricated from the same sheet of graphene as the junction itself. ...
Phys.org / Unfolding adsorption on metal nanoparticles: Connecting stability with catalysis
Metal nanoparticles have received substantial attention due to their applications in diverse fields from medicine, catalysis, energy and the environment. However, the fundamental properties of nanoparticle adsorption on a ...
Phys.org / The design, construction and characterization of new nanovibrational bioreactors for osteogenesis
In regenerative medicine, scientists aim to significantly advance techniques that can control stem cell lineage commitment. For example, mechanical stimulation of mesenchymal stem cells (MSCs) at the nanoscale can activate ...
Phys.org / Ultrafast optical field-ionized gases: A laboratory platform to study kinetic plasma instabilities
Kinetic instabilities commonly arise from anisotropic (different properties in different directions) electron velocity distributions within ionospheric, cosmic and terrestrial plasmas. But only a handful of experiments have ...
Phys.org / Bioengineering organ-specific tissues with high cellular density and embedded vascular channels
Bioengineers study the development of organ-specific tissues in the lab for therapeutic applications. However, the process is highly challenging, since it requires the fabrication and maintenance of dense cellular constructs ...
Phys.org / Gravity surveys using a mobile atom interferometer
Mobile gravimetry is an important technique in metrology, navigation, geodesy and geophysics. Although atomic gravimeters are presently used for accuracy, they are constrained by instrumental fragility and complexity. In ...
Phys.org / Dynamic charge density fluctuations pervading the phase diagram of a Cu-based high-Tc superconductor
Charge density fluctuations are observed in all families of high-critical temperature (Tc) superconducting cuprates. Although constantly found in the underdoped region of the phase diagram at relatively low temperatures, ...
Phys.org / Genome engineering with CRISPR/HDR to diversify the functions of hybridoma-produced antibodies
Bioengineers and life scientists incorporate hybridoma technology to produce large numbers of identical antibodies, and develop new antibody therapeutics and diagnostics. Recent preclinical and clinical studies on the technology ...
Tech Xplore / Multifunctional metallic backbones for origami robotics
Origami robots can be formed by tightly integrating multiple functions of actuation, sensing and communication. But the task is challenging as conventional materials including plastics and paper used for such robotic designs ...
Phys.org / Turning a handheld smartphone into a fluorescence microscope
Researchers in the U.S. and China have developed a method to transform a smartphone into a fluorescence microscope. The handheld smartphone-fluorescence microscope (HSFM) device allows complex biomedical analyses both rapidly ...
Phys.org / Quantum engineering atomically smooth single-crystalline silver films
Ultra-low-loss metal films with high-quality single crystals are in demand as the perfect surface for nanophotonics and quantum information processing applications. Silver is by far the most preferred material due to low-loss ...