The normal coefficient of restitution (COR) for a spherical particle bouncing on wet plane is investigated experimentally and compared with model characterizing the energy loss at impact. For fixed ratios liquid film thickness $\ensuremath{\delta}$ to diameter $D$, COR always found decay linearly ${\mathrm{St}}^{\ensuremath{-}1}$, where St, Stokes number, measures inertia respect viscous force liquid. Such dependence suggests convenient way predicting two fit parameters: critical infinitely...

We identify an unconventional algebraic scaling phase in the quantum dynamics of long-range hopping, free fermions, which are exposed to continuous local measurements. The occurs for hopping decay exponents 1<p≲3/2, and features entanglement entropy growth, a slow density-density correlation function, both with fractional exponent. It is separated from critical logarithmic growth at small, area law constant large monitoring rates. A perturbative renormalization group analysis predicts that...

We analytically study interacting Dirac fermions, described by the Thirring model, under weak local particle number measurements with monitoring rate $\gamma$. This system maps to a bosonic replica field theory, analyzed via renormalization group. For nonzero attractive interaction, phase transition occurs at critical measurement strength $\gamma_c$. When $\gamma>\gamma_c$, enters localized characterized exponentially decaying density-density correlations beyond finite correlation length;...

Single-layer lithography microfluidic devices for applying high and stable electric fields on chip.

We report a detailed study of the frictional force between tip scanning microscope and step on crystalline surface. Experiments surfaces freshly cleaved graphite reveal different contributions to lateral at steps with distinctly dependencies normal load scan direction. The can be attributed topography-induced twisting an increased dissipative due Schwoebel barrier steps. latter contribution is strongly reduced when near-surface dislocations are imaged.

The orientational order in vertically agitated granular-rod monolayers is investigated experimentally and compared quantitatively with equilibrium Monte Carlo simulations density functional theory. At sufficiently high number density, short rods form a tetratic state long uniaxial nematic state. length-to-width ratio at which the changes from to around $7.3$ both experiments simulations. This agreement illustrates universal aspects of ordering rod-shaped particles across nonequilibrium...

We study the effects of spacial structure localized losses in weakly-interacting fermionic quantum wires. show that multiple dissipative impurities give rise to resonant visible transport properties and particles' momentum distribution. These resonances can enhance or suppress effective particle wire. Moreover, we investigate interplay between interactions impurity shape find that, differently from coherent scatterer case, modifies scaling scattering probabilities close Fermi momentum. while...

In situ-tunable radio-frequency reflectometry is used for fast charge-detection measurements on a graphene single quantum dot. The variable capacitance of our special matching network both grants tunability and compensates the large stray between charge sensor’s contacts doped silicon oxide backgate. To demonstrate high detection bandwidth thus achieved, rates tunneling into out dot through same barrier are determined. Finally, an analytical model calculating these in multi-level regime...

Incorporating a variable capacitance diode into radio-frequency (rf) matching circuit allows us to in situ tune the resonance frequency of rf quantum point contact, increasing versatility latter as fast charge sensor proximal circuit. The performance this method is compared detail conventional low-frequency detection. approach also applicable other rf-detection schemes, such single electron transistor circuits.

Direct combination of liquid chromatography with multidimensional post-column analysis through microfluidics for individual quantification biophysical parameters.

A quantum point contact, capacitively coupled to a dot, has been used detect single electron charging inside the dot. Embedding contact in radio frequency matching circuit and measuring reflection coefficient of circuit, rather than conductance allowed for real time measurements with resolution 50 ns.

A detailed analysis of the tunability a radio-frequency quantum point contact setup using C − LCR circuit is presented. We calculate how series capacitance influences resonance frequency and charge-detector resistance for which matching achieved as well voltage power delivered to load. Furthermore, we compute noise contributions in system compare our findings with measurements taken an etched contact. While considerations mostly focus on specific choice circuit, discussion influence...

A radio-frequency (rf) matching circuit with an in situ tunable varactor diode used for rf reflectometry measurements semiconductor nanostructures is investigated and to optimize the sample-specific chip design. The samples are integrated a 2–4 GHz stub-matching consisting of waveguide stub shunted terminated coplanar waveguide. Several quantum point contacts fabricated on GaAs/AlGaAs heterostructure different designs compared. We show that change reflection coefficient fixed contact...

A thorough understanding of the energy dissipation in dynamics wet granular matter is essential for a continuum description natural phenomena such as debris flow, and development various industrial applications granulation process. The coefficient restitution (COR), defined ratio between relative rebound impact velocities binary impact, frequently used to characterize amount associated. We measure COR by tracing freely falling sphere bouncing on surface with liquid film thickness monitored...

We developed a novel all-optical method for monitoring the diffusion of small quencher molecule through polymer layer in bilayer architecture. Experimentally, we injected C60 molecules from into adjacent donor by stepwise heating, and measured how photoluminescence (PL) becomes gradually quenched incoming molecules. By analyzing temporal evolution PL, coefficient can be extracted, as well its activation energy an approximate concentration profile film. applied this technique to three...

We report the observation of an unusually large number consecutive spin pairs in a weakly coupled many-electron $\text{GaAs/AlGaAs}$ quantum dot. The are identified due to pairwise parallel shifts Coulomb resonances perpendicular magnetic field. Using nearby point contact for time-resolved charge detection, tunneling rates investigated as function gate voltage and compare our experimental data single-level transport model discuss possible reasons deviations.

We present a novel scanning force and friction microscope for applications in ultrahigh vacuum (UHV) using the optical beam deflection method detection. All components are positioned on air side enabling simple way of adjustment, possibility good decoupling topography lateral signal, absolute estimation values. demonstrate atomic resolution mica surfaces freshly cleaved UHV. As model systems, we investigate complex CuP2(100) surface unit cell level which exhibits wide range stick-slip...

The viscoelastic properties of a binary mixture mesogenic side-chain block copolymer in low molecular weight nematic liquid crystal are studied for mass concentrations ranging from the diluted regime up to crystalline gel state at about 3%. In state, system does not flow, exhibits polydomain structure on microscopic level, and strongly scatters light. Below gelation point, is homogeneous behaves like usual nematic, so continuum theory crystals can be applied interpreting experimental data....