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Fourier transform spectroscopy has been effective in overcoming detector noise for both analytical and applied scientific disciplines. The authors present a modification of a stationary Fourier transform spectrometer that efficiently utilizes imaging detectors to improve the measured spectral resolution of broadband optical signals
Cold and ultracold atomic gases can be used as simulators in order to analyse classical and quantum features of exotic magnetic phenomena. By applying an external magnetic field to a cold atomic gas in a self-organised optical lattice the authors demonstrate transitions between different magnetic phases via optically mediated spin-spin interactions.
Ultracold atoms serve as ideal systems for precise studies of light-matter interaction. The authors report on absolute strong-field ionization probabilities of rubidium atoms exposed to femtosecond laser pulses and show that Ab-initio theory is in perfect agreement with the data at Keldysh parameters near unity.
Skyrmions are magnetic topological features which are expected to play an important role in future data storage and information processing devices. The authors outline a theoretical method to calculate the size and wall width of an isolated skyrmion.
Motile cilia are organelles found in eukaryotic cells and serve to swim or generate surface flows. The paper presents a theoretical and experimental study showing the systematic link between synchronisation state and the beating motion of active biological filaments.
The compound NbSe2 has been the subject of considerable interest because of its unusual electronic behaviour, making it a prototypical material for understanding exotic phenomena. By tilting the magnetic field the authors are able to more clearly analyse features of its electronic structure at the surface of NbSe2 using scanning tunnelling microscopy.
Ramsey interferometers are used as a general tool of spectroscopy and matter wave interferometry. The authors demonstrate an echo- Ramsey interferometer that uses trapped quantum states in an optical lattice as a new tool to study coherence in many body quantum systems.
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.
