Gap opening remains elusive in copper chalcogenides (Cu2X, X = S, Se and Te), not least because Hubbard + U, hybrid functional and GW methods have also failed. In this work, we elucidate that their failure originates ...
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Despite being successfully synthesized [Zhang et al., Nat. Mater. 20, 1073 (2021)], the monolayer structure of stable hexagonal TiO2 is unknown, and it is not even clear whether it can exist in a freestanding form. Th...
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In this study, ZnO films are prepared at a low temperature of 150 °C by using spatial atomic layer deposition (sALD) with diethylzinc and ozone as precursor and oxidant. The ozone flow rate is varied to systemati...
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Millions of people of all ages have been diagnosed with epilepsy all over the world. Electroencephalography (EEG), a quantitative component, is vital in identifying and analyzing epileptic seizures. Manual EEG detecti...
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It is commonly accepted that the isomerization process primarily occurs in lowly charged molecular states, while highly charged states typically favor a direct fragmentation pathway through Coulomb repulsion. In the c...
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It is commonly accepted that the isomerization process primarily occurs in lowly charged molecular states, while highly charged states typically favor a direct fragmentation pathway through Coulomb repulsion. In the current experiment with an intense 800-nm laser field, a three-body isomerization pathway leading to intermediate O22+ formation and subsequent dissociation is observed in highly excited states of CO23+. It is confirmed by the calculated potential energy curves that CO23+ molecular ions in highly excited states with a linear geometry could transition through conical intersections into low-lying states with a bond angle around 70∘ (e.g., 62A1→12A1, 102B1→12B1), finally leading to oxygen molecule ions formation via isomerization. The present findings demonstrate that isomerization-induced change in molecular structures is a universal and nonnegligible phenomenon, even in triply charged molecular ions, providing insights into the photoinduced ultrafast processes in Earth's primitive atmosphere and benefit the understanding of CO2-dominated planetary atmospheres.
MnO2 and Fe3O4 nanoparticles' slow ion-diffusion kinetics and weak electrical conductivity hinder their electrochemical performance in supercapacitors and their energy-conversion ability in direct ethanol fuel cel...
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Conservation of parity plays a fundamental role in our understanding of various quantum ***,it is difficult to observe in atomic and molecular processes induced by a strong laser field due to their multiphoton charact...
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Conservation of parity plays a fundamental role in our understanding of various quantum ***,it is difficult to observe in atomic and molecular processes induced by a strong laser field due to their multiphoton character and the large number of states *** we report an effect of parity in strong-field Rydberg-state excitation(RSE)by comparing the RSE probabilities of the N_(2) molecule and its companion atom Ar,which has a similar ionization potential but opposite parity of its ground ***,we observe an oscillatory structure as a function of intensity with a period of about 50 TW∕cm^(2) in the ratio between the RSE yields of the two species,which can be reproduced by simulations using the time-dependent Schrödinger equation(TDSE).We analyze a quantum-mechanical model,which allows for interference of electrons captured in different spatial regions of the Rydberg-state wave *** the intensity-dependent RSE yield,it results in peaks with alternating heights with a spacing of 25 TW∕cm^(2) and at the same intensity for both ***,due to the opposite parities of their ground states,pronounced RSE peaks in Ar correspond to less pronounced peaks in N_(2) and vice versa,which leads to the period of 50 TW∕cm^(2) in their *** work reveals a novel parity-related interference effect in the coherent-capture picture of the RSE process in intense laser fields.
TiN/ZrO2/TiN capacitors were characterized using XRD, STEM, EDX, and monoenergetic positron beams. For an as-deposited ZrO2 layer, an interlayer was formed in the layer. After post-deposition annealing at 550°C, ...
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Historical and current aerial photographs are only of great value if the geolocation or address of the photographed areas is also available. In Western Europe, especially Austria, Germany and Czech Republic, there is ...
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Optical temperature sensors,which can accurately detect temperature in biological systems,are crucial to the development of healthcare *** challenge the state-of-art technology,it is necessary to design single lumines...
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Optical temperature sensors,which can accurately detect temperature in biological systems,are crucial to the development of healthcare *** challenge the state-of-art technology,it is necessary to design single luminescence center doped materials with multi-wavelength emission for optical temperature sensors with more modes and higher ***,an Er^(3+)single-doped KYF4 nanocrystals glass ceramic with an obvious thermochromic phenomenon is reported for thefirst time,which shows a different temperature-dependent green,red,and near-infrared luminescence behavior based on thermal disturbance *** addition,Er^(3+)single-doped GCfiber was drawn and fabricated into multi-mode opticalfiber temperature sensor,which has superior measured temperature resolution(<0.5℃),excellent detection limit(0.077℃),and high correlation coefficient(R^(2))of *** importantly,this sensor can monitor temperature in different scenarios with great environmental interference resistance and *** results indicate that our sensor shows great promise as a technology for environmental and healthcare monitoring,and it provides a route for the design of opticalfiber temperature sensors with multi-mode and high resolution.
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