Chemodynamic therapy (CDT) can induce cancer cell death through hydroxyl radicals (·OH) generated from Fenton or Fenton-like reactions. Compared with traditional therapies, CDT effectively overcomes inevitable drug resistance and exhibits low side effects. However, clinical application still faces challenges, primarily due to insufficient ·OH generation the short-lifetime of in vivo. To address these we developed a peroxynitrite (ONOO

We have investigated phase separation, silicon nanocrystal (Si NC) formation and optical properties of Si oxide (SiOx, 0<x<2) films by high-vacuum annealing dry oxidation. The SiOx were deposited plasma-enhanced chemical vapor deposition at different nitrous–oxide/silane flow ratios. physical the studied as a result thermal X-ray photoelectron spectroscopy (XPS) reveals that as-deposited random-bonding or continuous-random-network structure with oxidation states. After...

The effects of optical resonance and near field in the interaction transparent particles on a substrate with laser light have been examined experimentally theoretically. It is found that pits can be created at contacting point between particle metallic surface by irradiation (KrF,λ=248 nm) single pulse. influence size fluence structuring has investigated. ranges from 1.0 μm to 140 nm diameter. morphologies holes characterized an atomic force microscope scanning electron microscope. For...

Sidewall defects play a key role in determining the efficiency of GaN-based micro-light emitting diodes (LEDs) for next generation display applications, but there still lacks direct observation defects-related recombination at affected area. In this Letter, we proposed technique to investigate mechanism and size effect sidewall GaN blue micro-LEDs. The results show that mesa etching will produce stress release near sidewall, which can reduce quantum confinement Stark (QCSE) improve radiative...

Ultrashallow p+/n junctions formed by B+-ion implantation and annealed spike rapid thermal annealing (RTA) or laser were studied. The effect of the preamorphizing depth on redistribution boron atoms after has also been investigated. Our results show that for ultrashallow ultra-low-energy ion RTA, implant very little impact junction depth. By optimizing fluence preamorphization depth, a highly activated, ultrashallow, abrupt can be obtained using 248 nm excimer laser. secondary-ion-mass...

A quantitative investigation of laser-induced removal particles from magnetic head slider surfaces has been carried out. The damage thresholds sliders for laser fluence and pulse number were found to be about 150 mJ/cm2 5000 pulses at 100 mJ/cm2, respectively. For or above the threshold, irradiation onto can cause microcracks around pole tips. It is that cleaning efficiency increases with increasing number, but does not depend on repetition rate up 30 Hz. Laser removing reach 90% Al 100% Sn...

We have investigated the different mechanisms of photoluminescence (PL) silicon nanocrystals due to quantum confinement effect (QCE) and interface states. Si were formed by pulsed-laser deposition in inert argon reactive oxygen gas. The collisions between ejected species greatly influence morphology cause a transition from film structure porous cauliflowerlike structure, as ambient gas pressure increases 1 mTorr Torr. content with increasing O2 pressure, nearly SiO2 stoichiometry is obtained...

Sn-doped Ge–Sb–Te material was prepared by laser synthesis. It has a rocksalt crystal structure for Sn doping content less than 30at.%. A phase change temperature tester developed to in situ measure crystallization and melting point of Ge–Sb–Te. The crystalliza-tion is close that Ge2Sb2Te5 while its much lower Ge2Sb2Te5. points Sn9.8Ge20.3Sb28.4Te41.5 Sn18.8Ge19.5Sb25.3Te36.4 are 475 450°C, respectively. speed tested an ultraviolet light at pulse duration 30ns. exhibits high speed.

Four rotator–stator assembly complexes: benzoic-4-methylammonium-tetrafluoroborate-15-crown-5 ([C8H10NO2-(15-crown-5)]+[BF4]−, 1); benzoic-4-methylammonium-perchlorate-15-crown-5 ([C8H10NO2-(15-crown-5)]+[ClO4]−, 2); benzoic-4-methylammonium-tetrafluoroborate-18-crown-6 ([C8H10NO2-(18-crown-6)]+[BF4]−, 3); benzoic-m-ammonium-tetrafluoroborate-18-crown-6 ([C7H8NO2-(18-crown-6)]+[BF4]−, 4), for the investigation of supramolecular and host–guest interaction crown ethers, have been synthesized...

BaFe 12 O 19 films on (001) sapphire substrates are prepared by laser deposition with in situ heating and postannealing. The properties of the analyzed x-ray diffractometry, vibrating sample magnetometer, atomic force microscopy, Raman spectroscopy. relationship among coercivity, crystalline orientation, grain shape size is discussed. film coercivity 5.1 kOe has been obtained a preferential c-axis orientation normal to plane grains having good crystallinity hexagonal symmetry have heating.

Nanostructure fabrication using lasers in combination with a scanning tunneling microscope has been reported the past several years. Different mechanisms have discussed for formation of these nanostructures. However, they are controversial. In this study, we investigated mechanism nanostructure on both gold films and hydrogen-passivated Ge surfaces. Current-distance curves film an H-passivated surface under electrochemically etched tungsten tip were measured to determine tip-sample distance....

Photocatalytic degradation of organic pollutants in water is a highly efficient and green approach. However, the low quantum efficiency an intractable obstacle to lower photocatalytic photocatalysts. Herein, TiO2/ZnO heterojunction thin films combined with surface oxygen vacancies (OVs) were prepared through magnetron sputtering, which was designed drive rapid bulk separation charge carriers. The morphology structural compositional properties investigated via different techniques such as...

Carbon nitride thin films were deposited on silicon wafers by pulsed KrF excimer laser (wavelength 248 nm, duration 23 ns) ablation of graphite in a nitrogen atmosphere. Different fluences and pressures the atmosphere used order to achieve content as high possible films. Fourier transform infrared x-ray photoelectron spectroscopies identify binding structure species The N/C ratio 0.42 was obtained at an fluence 0.8 J cm−2 repetition rate 10 Hz under pressure PN=100 mTorr. A C=N double bond...

Silicon oxide (SiOx) nanostructured films have been formed by pulsed-laser deposition of Si in oxygen at different substrate temperatures, order to study the structures and optical properties related quantum confinement effects. After laser ablation, single-crystal Si(100) target is converted a polycrystal structure shows weak photoluminescence (PL). The as-deposited SiOx show large particles (i.e., droplets) on uniform background film. droplets with PL emission same high crystallinity as...

The position of the amino group on ammonium salt plays a key role in supramolecular structure and conformation crown ether.

With the rapid development of modern industries, surface quality and performance metals need to be improved. Composite electrodeposition (co-deposition) has evolved as an important technique for improving metal materials. Herein, a new type graphene oxide (GO)-reinforced nickel-boron (Ni-B) composite coating was successfully prepared on 7075 aluminum (Al) alloy by co-deposition. Characterization revealed significant improvement in mechanical anti-corrosion properties with incorporation GOs....

Carbon nitride thin films were deposited by 532 nm Nd:YAG laser ablation of graphite assisted a nitrogen ion beam bombardment on silicon substrates. Different energies (200, 400, and 600 eV) used while the parameters remained fixed. X-ray photoelectron spectroscopy (XPS) ellipsometry measurements carried out to analyze electronic optical properties. The XPS C 1s spectrum for C–N binding is at 286.5 eV N has corresponding peak 396.9 eV. gap Eopt order magnitude 10−1 increases with N/C ratio...

Phase change materials have become significantly attractive due to its unique characteristics for extensive applications. In this paper, a kind of phase material, which consists Fe and Te components, is developed. The crystallization temperature the Fe-Te 180 °C Fe1.19Te can be adjusted by Fe/Te ratio. High-speed in has been demonstrated nanosecond laser irradiation. Comparing conventional materials, exhibit an anomalous optical property that higher reflectivity at amorphous than crystalline...

The functionality and reliability of nanoscale multilayer devices components are influenced by changes in stress microstructure throughout fabrication, processing, operation. NiV/B4C multilayers with a d-spacing 3 nm were prepared magnetron sputtering, two groups annealing experiments performed. stress, microstructure, interface after investigated grazing-incidence X-ray reflectometry (GIXR), diffraction (GIXRD), diffuse scattering, small-angle scattering (GISAXS). temperature dependence...