44 results about "Electronic density" patented technology

A novel coordination complex formed by dinuclear metal complexation is provided. The complex is a dinuclear metal complex of a compound, wherein the compound comprises a conjugation ring system substituted with: a) an electron donating group selected from —OH, —SH and —NH2; b) an indicating group selected from a chromogenic group, a fluorescent group and an electrochemical group; and c) two binding auxiliary groups, in combination with the electron donating group each of which being coordinated with the metal to provide an anion bonding site, wherein as the complex binds to a anion, the coordination of the electron donating group with the metal is weakened and electron donation of the electron donating group to the conjugation ring system is reinforced such that the reinforced electron donation by the electron donating group is transferred through the conjugation ring system to the indicating group to produce an indicating signal concomitant with the change of its electronic density. The coordination complex shows high sensitivity and high selectivity for pyrophosphate over other anions in an aqueous solvent over a wide pH range. Therefore, the complex is useful for pyrophosphate assay as a pyrophosphate sensor.

An apparatus and method is presented for controlling the quality of a mass density measurement of a multiphase fluid mixture including a plurality of fluid fractions and a plurality of constituting elements. The method includes the steps of: submitting a measuring pipe to a flux of high energy photons and measuring count rates; determining a mass density of the multiphase fluid mixture based on count rate measurements in a first and second energy windows; determining an electronic density of the multiphase fluid mixture based on count rate measurements in a third energy window; and comparing the electronic density to the mass density of the multiphase fluid mixture.

The present invention is directed to a compound of formula I:wherein R1 and R2 are independently selected from H, halogen, protected or unprotected hydroxy, alkylsilyloxy, substituted or unsubstituted alkyl or cycloalkyl, substituted or unsubstituted alkoxy or aryloxy, substituted or unsubstituted aryl, substituted or unsubstituted heterocyclyl, nitro, amino, mercapto or alkylthio;R3 and R4 are independently selected from H, substituted alkyl, substituted or unsubstituted alkoxy or aryloxy, substituted or unsubstituted aryl, substituted or unsubstituted heterocyclyl;Z is —(CRaRb)n— wherein n is a number selected from 1, 2, 3 and Ra and Rb are each independently selected from hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted aryl, substituted or unsubstituted heterocyclyl, substituted or unsubstituted alkoxy, substituted or unsubstituted aryloxy, substituted or unsubstituted amino or halogen;Y is selected from —O—, —S—, —N(Ra)— or —C(O)—, wherein Ra is as previously defined and does not form a cyclic ring;W is a group with sufficient electronic density to stabilize the compound through π interactions with the benzodienone moiety; or a salt thereof.The present invention also provides a method for its synthesis and intermediates thereof, as well as a method for absorbing UV comprising exposing a compound of formula I to UV radiation.

The invention discloses a portable storage battery electrolyte ultrasonic aerometer, belonging to the technical field of electronic density metrical instruments. The portable battery electrolyte ultrasonic aerometer comprises a C8051F120 singlechip as well as an ultrasonic parameter measurement unit, a power supply management unit, a key control unit, a state indication unit, a data output unit, a storage and clock unit and a man-machine interaction unit, which are connected with the C8051F120 singlechip. The portable battery electrolyte ultrasonic aerometer is characterized in that the C8051F120 singlechip is used for controlling the ultrasonic parameter measurement unit, the power supply management unit, the key control unit, the state indication unit, the data output unit and the storage and clock unit, and processing signals obtained by the ultrasonic parameter measurement unit, and meanwhile, the C8051F120 singlechip uploads data measured by the man-machine interaction unit to a computer and responds a control instruction sent by the computer. The portable battery electrolyte ultrasonic aerometer has the main advantages of high measurement precision, fast measurement speed, high automation degree, portable design, online function and the like.

According to the present invention, when nitriding the surface of the silicon substrate, a spacer having an opening is arranged between the plasma generating part and the silicon substrate, and the electron density on the surface of the silicon substrate is controlled to be 1e+7 (unit·cm-3) ~1e+9 (unit cm-3). According to the present invention, deterioration of the silicon substrate and the nitride film is effectively suppressed.

The invention discloses a nitrogen-side gallium nitride napped-side solar battery and a production method thereof, which mainly solve the problems of the present solar battery that the efficiency is low and the cost is high. The nitrogen-side gallium nitride napped-side solar battery comprises a sapphire substrate (1), aluminum nitride (AlN) buffering layer (2), an extension layer (3), a cathode (4), an organic polymer layer (5) and an anode (6), wherein the AlN buffering layer (2) adopts metal-organic chemical vapor deposition (MOCVD) growth, and the thickness is 150nm to 200nm; the extension layer (3) adopts a nitrogen surface n-GaN grown by the MOCVD with the thickness of 2 to 3 micrometers and the electronic density of 1.0*1017cm<-3> to 2.0*1018cm<-3>, the surface which is contacted with the organic polymer layer (5) is a recess napped surface, the density of the recesses is 1.0*107cm<-2> to 4.0*108cm<-2>, and the depth is 450 nm to 1.5 micrometers; the cathode (4) is formed by depositing titanium (Ti) and aluminum (Al) on the nitrogen side n-GaN layer; the organic polymer layer (5) is formed by spin coating on the surface of the nitrogen side n-GaN layer, and the thickness is 50 to 80nm; and the anode (6) is formed by depositing gold Au on the organic polymer layer (5). The process is simple, the cost is low, the photoelectric conversion efficiency is high, and the nitrogen-side gallium nitrode napped-side solar battery and the production method can be used for the commercial and civil power generation systems.