Electrospun nanocomposite fiber fabric, consisting of polyaniline nanoparticles, poly(ε-caprolactone), and gelatin, efficiently inhibited tumor growth in vivo by orthotopic photothermal treatment.

We theoretically investigate the isolated attosecond pulse generation from pre-excited medium with a chirped and chirped-free two-color field. It is found that the large initial population of the excited state can lead to the high density of the free electrons in the medium and the large distortion of the driving laser field after propagation, though it benefits large enhancement of harmonic intensity in single atom response. These effects can weaken the phase-match of the macroscopic supercontinuum. On the contrary, the small initial population of 4% can generate well phase-match intense supercontinuum. We also investigate an isolated attosecond pulse generation by using a filter centered on axis to select the harmonics in the far field. Our results reveal that the radius of the spatial filter should be chosen to be small enough to reduce the duration of the isolated attosecond pulse due to the curvature effect of spatiotemporal profiles of the generated attosecond pulses in the far field.

We theoretically demonstrate a method for generating the broadband supercontinuum. It is found that a weak 400-nm few-cycle pulse can be used to replace the ultraviolet attosecond pulse for controlling the ionization dynamics of the electron wave packets when a long-wavelength driving pulse is adopted. By adding a 400-nm few-cycle laser pulse to a 2000-nm driving pulse at proper time, only a quantum path can be selected to effectively contribute to the harmonics, leading to the efficient generation of a broadband supercontinuum. Moreover, our scheme is stable against nearly all the small parameter shift of the driving pulse and the controlling pulse. The macroscopic investigation reveals that the macroscopic supercontinuum with the bandwidth of about 165eV can be obtained. Then isolated sub-110-as pulses can be directly generated. Moreover, the generated attosecond pulse has a divergence angle of about 0.1mrad in the far field, which indicates its beam quality is good. Besides, it is also found that a near-field spatial filter can be used to select the different quantum paths (short or long) in the far field.

We theoretically investigate the generation of elliptically polarized isolated attosecond pulses from an oriented CO gas medium using a linearly polarized driving pulse. Our results reveal that a largely elliptically polarized modulated supercontinuum at the microscopic level can be generated from a properly oriented CO molecule. Moreover, it is found that the nonsymmetric structure of the highest occupied molecular orbital of the oriented CO molecule is responsible for the generation of the largely elliptical harmonics. In addition, propagation effects are also employed to macroscopically select the short quantum path. Then a smooth elliptically polarized harmonic spectrum can be obtained at the macroscopic level. Finally, an isolated attosecond pulse with elliptical polarization can be directly obtained, which might open additional avenues for applications in probing ultrafast electron dynamics.