摘要:
An apparatus for vibrating the ulna in vivo includes a main post provided upright on a base stand, and a horizontally extending upper arm secured to the upper part of the main post for vertical movement. The apparatus also includes a plate for fixing the back of the hand; the plate is secured to the end of the upper arm for free movement at an arbitrary angle of inclination. A lower arm which is secured for vertical movement to the lower part of the main post and extending in the same horizontal direction as the upper arm is also provided. In addition, an excitor is mounted on the lower arm for sliding movement in the axial direction of the lower arm and in a horizontal direction perpendicular thereto, and a brachium resting plate is fixed ahead of the excitor.
摘要:
Disclosed is a vinylidene cyanide copolymer obtained by copolymerization of vinylidene cyanide and two kind of vinyl compounds.By formation of a ternary copolymer, a monomer difficultly copolymerizabke with vinylidene cyanide can be incorporated into the polymer, and high piezoelectric performance can be obtained when polarized.
摘要:
An optical device is useful as a microlens array or a grating lens, which comprises microlens portions each having a light transmittance of not less than 80% within a visible light range, and produced by subjecting a photo-curable monomer composition to two-stage light-irradiation comprising a partial irradiation and a whole irradiation.
摘要:
An ultrasonic transducer includes a piezoelectric member consisting of either a unpolarized piezoelectric polymer material or the like, or an in-advance polarized piezoelectric polymer material or the like, a first flexible substrate on which a first electrode set and their connecting leads are formed, these being bonded to one surface of the piezoelectric member, and a second flexible substrate on which a second electrode and its connecting lead are formed, these being bonded to the other surface of the piezoelectric member, wherein the piezoelectric member is sandwiched between the first electrode set and second electrode. The electrodes can apply a voltage to polarize the unpolarized piezoelectric polymer material in a manufacturing process of the piezoelectric member, or apply a drive voltage to the finished ultrasonic transducer. Also disclosed is a method of manufacturing the ultrasonic transducer.
摘要:
An optical material obtained by electrically polarizing a high polymer molded article obtained from a composition comprising a copolymer of vinylidene cyanide and at least one comonomer selected from vinyl compounds, other vinylidene compounds and dienes having uniformly dispersed therein from 0.1 to 70% by weight of an organic molecular crystal having nonlinear optical effects, with the total amount of the copolymer and the organic molecular crystal being 100% by weight. The optical material has excellent orientation of the organic molecular crystal, great nonlinear optical effects, and excellent moldability.
摘要:
An ultrasonic transducer includes a piezoelectric member consisting of either a unpolarized piezoelectric polymer material or the like, or an in-advance polarized piezoelectric polymer material or the like, a first flexible substrate on which a first electrode set and their connecting leads are formed, these being bonded to one surface of the piezoelectric member, and a second flexible substrate on which a second electrode and its connecting lead are formed, these being bonded to the other surface of the piezoelectric member, wherein the piezoelectric member is sandwiched between the first electrode set and second electrode. The electrodes can apply a voltage to polarize the unpolarized piezoelectric polymer material in a manufacturing process of the piezoelectric member, or apply a drive voltage to the finished ultrasonic transducer.
摘要:
There is disclosed an organic nonlinear optical material which comprises a polymer having the following constitutional units, in amounts of 5 to 100 mole % of (I) and 0 to 95 mole % of (II), and a weight average molecular weight (Mw) of the polymer being 10,000 to 2,000,000. ##STR1## wherein the symbols represent the same meanings as defined in the specification. ##STR2## A nonlinear optical element has large nonlinear optical effect and yet is excellent in molding processability so that it can be widely applied to the filed of optical processings.
摘要:
There is disclosed an organic nonlinear optical material which comprises a polymer having the following constitutional units, in amounts of 5 to 100 mole % of (I), 0 to 50 mole % of (II) and 0 to 50 mole % of (III), and a weight average molecular weight (Mw) of the polymer being 10,000 to 2,000,000: ##STR1## wherein m, n, X, Y and A have the meanings as defined in the specification, ##STR2## wherein R.sup.2 represents an alkyl group, and ##STR3## A nonlinear optical element which is tough with wide surface as well as having large nonlinear optical effect can be obtained.
摘要:
This invention relates to a method of manufacturing pyroelectricity and piezoelectricity elements consisting of a very thin film of polyvinylidene fluoride or a copolymer of polyvinylidene fluoride less than 7 micron thickness which is stretched while in close contact with a laminating resin which has a low adherence to said film so that said film can be stretched very thin as stated above.
摘要:
A vinylidene cyanide copolymer obtained by copolymerizing vinyldene cyanide represented by formula (I) ##STR1## and a vinyl compound represented by formula (II) ##STR2## wherein Z represents a hydrogen atom or a saturated hydrocarbon group having from 1 to 6 carbon atoms; when Z is a hydrogen atom, R represents C.sub.n H.sub.2n+1 COO--, wherein n represents 0 or an integer of from 4 to 9; and when Z is a saturated hydrocarbon group, R represents CH.sub.3 COO-- or a group having a benzene ring. The copolymer is excellent in transparency and provides an electret exhibiting excellent pyroelectricity or piezoelectricity upon polarization.
摘要翻译:通过将由式(I)表示的乙烯基氰化物(I)和由式(II)表示的乙烯基化合物(II)得到的亚乙烯基氰共聚物,其中Z表示氢原子或饱和烃基, 1至6个碳原子; 当Z是氢原子时,R表示C n H 2n + 1 COO-,其中n表示0或4至9的整数; 当Z为饱和烃基时,R表示CH 3 COO-或具有苯环的基团。 共聚物的透明度优异,并且提供了极化时显示优异的热电性或压电性的驻极体。