A new superfluid phase of $$^3$$ He, a polar phase, which is known to stabilize in nematic aerogel, has already led the observation many phenomena. One important condition for existence $$^4$$ He coverage, removes solid paramagnetic from surface aerogel strands. We report here results NMR experiments with demonstrating influence coverage. Simultaneous measurements resonance properties quartz tu...

a novel composite adsorbent, silica aerogel activated carbon was synthesized by sol-gel process atambient pressure drying method. the composite was characterized by fourier transform infraredspectroscopy (ft-ir), scanning electron microscopy (sem), differential scanning calorimetry(dsc) and nitrogen adsorption / desorption isotherms (bet).in the present study, the mentioned adsorbent was used m...

The acoustic spectrum of the polar phase superfluid 3 He in nematic aerogel has been studied. An equation determining dispersion sound oscillations system derived. Solutions have obtained for low-frequency oscillations, whose propagation velocity is much lower than speed first pure He, directions along and across anisotropy axis aerogel. In same approximation, a solution purely shear found unde...

In this chapter, aerogel particles are prepared from W/O lotion, the emulsification mechanism of lotion is briefly described, and factors affecting preparation microspheres studied. Through a series characterization tests, it known that: properly increasing temperature can accelerate gel reaction rate shorten time; The stirring surface modifier have certain effects on density porosity aerogel. ...

Conductive and adhesive hydrogels are promising materials for designing bioelectronics. To satisfy the high conductivity of bioelectronic devices, metal nanomaterials have been used to fabricate composite hydrogels. However, fabrication a conductive-nanomaterial-incorporated hydrogel with performance is great challenge because easy aggregation nature conductive making processing difficult. Here...

The aim of this study is to analyze the use of Ag-doped activated carbon aerogels for bromide and iodide removal from drinking water and to study how the activation of Ag-doped aerogels affects their behavior. It has been observed that the carbonization treatment and activation process of Ag-doped aerogels increased the surface area value ( [Formula: see text] ), whereas the volume of meso-(V(2...

XIth Rencontres de Blois (Frontiers of Matter) proceedings. The Alpha Magnetic Spectrometer (AMS) was flown in june 1998 on board of the space shuttle Discovery (flight STS-91) at an altitude ranging between 320 and 390 km. This preliminary version of AMS included an Aerogel Threshold ˘ Cerenkov detector (ATC) to separate ¯ p from e − background, for momenta less than 3.5 GeV/c. In this paper, ...