نتایج جستجو برای: glass ion
تعداد نتایج: 274965 فیلتر نتایج به سال:
In electroanalytical measurements, nanoporous glass plugs are widely used to contain the electrolyte solution that forms a salt bridge between the sample and the reference electrode. Even though reference electrodes with plugs made of nanoporous glass (such as Vycor or CoralPor glass) are commercially available and are frequently used, the limits of their use have not been explored thoroughly. ...
We prepared a new glass ionomer cement using bioactive CaO-P2O5-SiO2(-MgO) glass and investigated its setting process using FT-IR and MAS NMR analyses. The compressive strengths of the cements depended on the glass composition and a maximum strength of 33.3 +/- 4.7 MPa was obtained using cement with the glass composition of MgO:4.6, CaO:44.9, SiO2:34.2 and P2O5:16.3% in weight. FT-IR analysis s...
Birefringent Metasurfaces In article number 2301111 by Nathan J. Ray, Eyal Feigenbaum, and co-workers, reactive ion beam etching has been used to generate angled all-glass metasurface features that are monolithic the glass substrate. An anisotropic index of refraction for these metasurfaces enables non-birefringent materials exhibit birefringence. Additionally, imparted anisotropy lends itself ...
ABSTRACT This work presents the novel glass nanopillar array based nanoplasmonic lab-on-a-chip for highly sensitive surface-enhanced Raman Spectroscopy (SERS). In this work, large-area glass nanopillar arrays are fabricated on both sides of the wafers by combination of metal dewetting and reactive-ion-etching (RIE) process. Metal layer is deposited onto one side to construct nanoplasmonic biose...
Streak camera detect ion has been used to determine the temporal characteristics of pulses f rom Nd:phosphate glass used as a mode-locked laser oscillator and as an amplifier. The frequency doubled pulses are not t ransform limited (za~, = 46 cm -t , At = 6 ps). The four th harmonic has a spectral bandwidth o f 11 cm -J and is tunable across the full bandwidth o f the second harmonic. Tempera t...
The square arrays are fabricated by e-beam lithography on polycrystalline Co sputtered on glass substrates. First, a continuous layer, 1000 nm thick, of polycrystalline Co is grown. This thickness guarantees optical opacity for the light used in the experiments, a 632.8 nm wavelength 1.5 mW laser. Secondly, the continuous Co layer is locally etched (all the way through to the glass substrate) t...
Selective deposition of SiO2 nanoparticles was demonstrated on a soda-lime glass surface with a periodic sodium deficient pattern formed using the electrical nanoimprint. Positively charged SiO2 particles generated using corona discharge in a cyclic siloxane vapor, were selectively deposited depending on the sodium pattern. For such phenomena to occur, the sodium ion migration to the cathode si...
Present address: Xiao-Liang Wang, Seeo, Inc., 3906 Trust Way, Hayward, CA 94545, USA The review presents an overview of the recent advances in inorganic solid lithium ion conductors, which are of great interest as solid electrolytes in all-solid-state lithium batteries. It is focused on two major categories: crystalline electrolytes and glass-based electrolytes. Important systems such as thio-L...
A pH electrode measures hydrogen ion (H+) activity and produces an electrical potential or voltage. The operation of the pH electrode is based on the principle that an electric potential develops when two liquids of different pH come into contact at opposite sides of a thin glass membrane. This was originally discovered in 1906 by Max Cremer [1]. His discovery laid the foundation for Fritz Habe...
1. Immediately after coming into contact with glass, leucocytes are most adhesive at pH 8.0 or > 8.0. 2. Agglutination of leucocytes increases with increasing H ion concentration from pH 8.0 to 6.0. 3. In phagocytosis experiments where leucocytes creep about on the slide picking up articles the optimum pH is 7.0. Here ameboid movement is probably the limiting factor. 4. The optimum for phagocyt...
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