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As the electronic performance of organic semiconductors and other emergent materials improves, researchers call for attention in extracting charge mobility values from field-effect transistors.
Mobility is an important charge-transport parameter in organic, inorganic and hybrid semiconductors. We outline some of the common pitfalls of mobility extraction from field-effect transistor (FET) measurements and propose practical recommendations to avoid reporting erroneous mobilities in publications.
Defects in mercury telluride quantum dots can be exploited to achieve amplified spontaneous emission under continuous-wave optical pumping at ultralow power levels.
Compositional grading of colloidal quantum dots enables electrically driven amplification of light, bringing electrically driven lasers from these materials very close.
In situ transmission electron microscopy resolves atomic structures and dislocation dynamics of surface segregation, providing insights that open a pathway to new advances in interface engineering.
Additive manufacturing has been used to fabricate a common stainless steel, which imparts a unique microstructure to this material, making it stronger and more ductile than that produced with conventional methods.
The chirality of colloids dispersed in achiral liquid crystals shapes colloidal dynamics and interactions, giving rise to chiral supramolecular assemblies and attractive or repulsive colloidal motions.
Although multivalent cation batteries based on magnesium, calcium or aluminium are technologically attractive, the metal anode still represents a challenge. It is now demonstrated that significant quantities of calcium can be plated and stripped at room temperature with low polarization.
The exchange bias effect in IrMn/FeCo is driven by a phase transition in the IrMn layer at room temperature, and occurs without the typical field-cooling sequence across the antiferromagnet Neel temperature.
Stimulated emission under continuous-wave excitation from mercury telluride quantum dots at very low thresholds (compatible with electrical injection) is achieved by exploiting surface traps that render the quantum dots into four-level systems.
Core/shell type-I semiconductor nanocrystals with compositionally graded shell and embedded in a current-focusing device architecture reach population inversion, a condition required for lasing, when excited with direct current.
An in-plane memory device based on multidomain BiFeO3 thin films is reported. Highly conductive domain walls appear only during the application of a read-out field, a non-destructive process that reduces accumulation of mobile defects on the walls.
In situ transmission electron microscopy combined with theory modelling reveals that surface segregation in CuAu solid solution generates misfit dislocations, providing atomistic mechanisms of dislocation nucleation and dynamics at heterointerfaces.
Colloidal chiral springs and helices are formed by light inside a nematic liquid crystal suspension, predefining the mesoscopic superstructures self-assembled in such systems.
An approach to form protein-based hydrogels in living cells that resemble physiological hydrogel-like size-dependent molecular sieves is presented. Synthetic RNA granules mimics are obtained by functionalizing these entities with RNA-binding motifs.
A microfluidics method to generate giant, copolymer-stabilized liposomes is presented. These vesicles are functionalized with distinct proteins to recapitulate cellular processes.
Metallic stents have been widely used in coronary angioplasty. Here, the authors develop a resorbable self-expanding stent from polymeric elastomers with high mechanical strength for coronary applications.
