a, Electroluminescence (EL) spectra of the OLED and comparison with the photoluminescence (PL) from a thin TSBF film and the absorptivity (Abs.) spectrum of a 230-nm thick BBEHP-PPV film.b, Time profile of driving current and electroluminescence of the OLED at different peak current densitie...
In this study, the laser was manually switched on and off. To facilitate damage comparison, a region of interest (ROI) was defined at the center of each contact area with a constant length. This length was used to calculate the individual damage areas and the energy per unit area. Before ...
On the right-hand side, the first term represents the gain, and the second term is the loss. For the gain term, the effective number of atoms that can be pumped to the 7P1/2state isNeff = 5.71 × 109with a pumping light intensity ofI = 10 mW/mm2and vapor-cell t...
, recent studies suggest that optimising laser processing parameters can yield a uniform layer of η-Fe2Al5 IMCs at the interface between Fe- and Al- rich regions, free from problems like hot and cold cracks, ultimately contributing to improved strengths of up to 4 kN (105.3 N/mm2)11...
For precision measuring instruments such as micro coordinate measuring machines (micro CMMs) or scanning white-light interferometers, several-10 mm2 in-plane measuring area is enough [18,19,20,21]. On the other hand, precision positioning systems to be employed in the semiconductor industry require...
The Ce:Nd:YAG solar laser presented only 0.35 W/mm3 maximum heat load, 307.9 K maximum temperature, and 10.8 N/mm2 maximum thermal stress values, which are substantially lower than that of most recent Fresnel lens single Ce:Nd:YAG solar laser pumping scheme [22], ensuring consequently ...
where q is laser energy density, the unit is J/mm2, W is laser power, H is laser spot diameter, and v is scanning speed. Laser energy density plays a decisive role in SLS forming, and its size is related to laser power, scanning speed, and scanning spacing [27]. To obtain the sui...
The average liquid thickness d (μm) was then calculated as d = V μL /A mm2 . In absence of rotation, the error in estimating A is low as the liquid is clearly encircled also when photographing the sample perpendicularly to the support (Figure 5(a)). If the liquid reaches borders ...
collimation provided by the slit. Using a simple slit for blocking the protons with a divergence larger than the acceptable value (i.e. a few mrad, see Fig.4) is a possible solution for obtaining a collimated beam, at the cost of losing a part of the protons stemming out of the laser...
The multicolor PAFC-based Cytophone setup (Fig.1a,2a–c) is equipped with two pulsed laser diodes (MM25004, MM25005, Quantel Laser, France) with wavelengths of 808 nm and 915 nm (Fig.2c), pulse widths of 27 ns, pulse repetition rate of 1 to 3 kHz and pulse energies of 140 μJ ...