Articles

Organic solar cells with small molecule acceptors achieve promising high efficiencies. The authors use numerical simulations to explain under which circumstances complementary absorption or overlapping absorption bands of the donor and non-fullerene acceptor molecules will be more beneficial for efficiency.

Quantum entanglement plays a fundamental role in quantum metrology. In this paper the authors propose, and experimentally realize a scheme to control the transition from quantum to classical correlations with energy correlated photons.

Non-equilibrium dynamics of cold atoms have recently attracted attention revealing unconventional phenomena. The authors report here the experimental observation of a non-equilibrium steady state in a hybrid trap composed of a magneto-optical trap and a moving optical lattice.

Characterizing the non-equilibrium phase transition to a Bose-Einstein condensate is an open problem in condensed matter physics. The authors perform a detailed numerical characterization of this dynamical process, providing insights into the equilibration process after crossing the transition.

Self-propelled droplets capable of transporting cargo to specific targets have major interest in medical applications. In this article, the authors report on a one step cargo delivery method using swimming droplets.

Formation of stable coherent structures is a fundamental physical phenomenon that occurs in various systems. This paper presents dissipative soliton build-up in mode-locked fibre lasers and investigate spectral and temporal evolution observing nonlinear dynamics ahead of the formation of a stable dissipative soliton.

A better understanding of heat-transfer mechanisms is essential to designing more efficient cooling systems for high-energy devices. Using a micron-sized hot-spot, the authors investigate the dynamics of the nucleation and growth of a single vapour bubble from the micro to nanoscale.

Ultrasound-driven encapsulated microbubbles show great promise as convenient transport vehicles for local drug delivery. This manuscript reports the development of a theoretical framework validated by experiments for understanding the role of non-spherical oscillations in ultrasound-mediated release of a drug payload from targeted microbubbles.

Frequency combs correspond to optical spectra composed of a succession of equally spaced lines that can be used in numerous fields such as high-precision spectroscopy. The authors report a new way of converting frequency combs in the mid-infrared region, which has potential applications in molecular spectroscopy and gas sensing.

Cell-sized liposomes encapsulating native macromolecular polymers can be built using molecular robotics to produce motions similar to living cells. The paper shows that encapsulating high concentration of actin into liposomes results in their deformation.

Plasma Raman amplifiers have been proposed as a mean to increase laser intensity beyond what is currently possible with solid state devices. The paper presents a counterintuitive geometry for a Raman amplifier that allows to optimize the Raman amplification of a seed pulse in a plasma.

Understanding the magnetic properties of molecules at the atomic level is a crucial aspect in the growing area of organic spintronics. This study brings further insight into the mechanisms of electron-spin interactions by investigating an iron-based organic molecule deposited on gold substrates.

In order to develop the next generation of semiconductor devices it is important to better understand the fundamental physics of materials other than silicon. The authors develop a theoretical approach to describe the charge transport properties of polymer-based semiconductors by focusing on features related to their crystallographic properties.

Since the Renaissance, the Reiner Gamma formation was identified as a peculiar lunar feature. By combining magnetic field topology based on satellite observations with a full-kinetic plasma model, the authors successfully reproduced the shape of the surface albedo pattern beneath the magnetic anomaly.

The study provides new insight into the light-matter interactions of organic based perovskites. The authors do so by investigating the hybrid perovskite methylammonium lead iodide, which is considered a benchmark material for solar cells with high power conversion efficiency.

Photoemission from nanostructures has raised considerable interest in recent years. The authors propose a low-budget scheme for multiphoton photemission with a continuous-wave laser that may inspire design of accessible nanoscale coherent electron sources.

A first-principles description of electronic states in cuprate high-temperature superconductors has remained a longstanding challenge in the field. The authors show how the equilibrium crystal structure as well as the key ground-state electronic and magnetic properties of lanthanum cuprate superconductor as an exemplar correlated material can be obtained accurately by applying an advanced functional within the framework of the density functional theory.

Dimension is an important resource in quantum information theory. By exploiting the weak measurement technique, the paper presents a three-observer dimension witness protocol which can be applied, among other protocols, in semi device-independent quantum information theory.

In a world in constant need of electricity, energy harvesting techniques from the ambient environment can provide in-situ power generation. The authors demonstrate and design a system to efficiently extract energy from an external source at an exponentially increasing rate.

Intermediate band photovoltaics have the potential to increase traditional solar cell efficiencies by placing an intermediate band energy level between the valence and conduction bands, but they suffer from short carrier lifetimes because of Shockley-Read Hall recombination. The Quantum Ratchet device, whose concept was proposed theoretically as a way to increase the intermediate band life time, is realised here with a semiconductor nanostructure.