Abstract:
Multifunctional electroactive copolymers are provided. The copolymers may be A-B-A triblock copolymers, brush-type graft copolymers, or variations thereof. In a preferred embodiment, the copolymers are "dual use" in that they comprise both a light emitting segment and a charge transport segment. Methods of synthesizing the novel electroactive copolymers are provided as well, as are opto-electronic devices, particularly LEDs, fabricated with the novel copolymers.
Abstract:
A composition of matter and a structure fabricated using the composition. The composition comprising; a resin; polymeric nano-particles dispersed in the resin, each of the polymeric nano-particle comprising a multi-arm core polymer and pendent polymers attached to the multi-arm core polymer, the multi-arm core polymer immiscible with the resin and the pendent polymers miscible with the resin; and a solvent, the solvent volatile at a first temperature, the resin cross-linkable at a second temperature, the polymeric nano-particle decomposable at a third temperature, the third temperature higher than the second temperature, the second temperature higher than the first temperature, wherein a thickness of a layer of the composition shrinks by less than about 3.5% between heating the layer from the second temperature to the third temperature.
Abstract:
An approach is presented for designing a polymeric layer for nanometer scale thermo-mechanical storage devices. Cross-linked polyimide oligomers are used as the recording layers in atomic force data storage device, giving significantly improved performance when compared to previously reported cross-linked and linear polymers. The cross-linking of the polyimide oligomers may be tuned to match thermal and force parameters required in read-write-erase cycles. Additionally, the cross-linked polyimide oligomers are suitable for use in nano-scale imaging.
Abstract:
Silsesquioxan-Polymere, Silsesquioxan-Polymere in negativ photostrukturierbaren dielektrischen Formulierungen, Verfahren zur Bildung von Strukturen unter Verwendung von negativ photostrukturierbaren dielektrischen Formulierungen, welche Silsesquioxan-Polymere enthalten, und Strukturen, die aus Silsesquioxan-Polymeren hergestellt wurden.
Abstract:
The invention relates to an integrated circuit device comprising (i) a substrate; (ii) metallic circuit lines positioned on the substrate and (iii) a dielectric material positioned on the circuit lines. The dielectric material comprises the reaction product of a hyperbranched polymer and organic polysilica.
Abstract:
An improved apparatus and method for detecting the polarization state of an optical wavefront is disclosed, which is especially suitable for use in an integrated magneto-optic recording head. An optically transparent waveguide structure (10) transmits TE and TM modes of the wavefront propagated as a beam coupled into the waveguide by a TE/TM grating coupler (16). In the waveguide structure is a periodic structure (21) comprising a birefringent mode separator that splits the propagating beam into TE and TM modes. The mode separator comprises an array of uniformly spaced volumes of identical configuration. Photosensitive devices (13,14) detect the intensity of the light contained within each of the separated beams. The signals from these photosensitive devices are used to determine the state of polarization of the optical wavefront. The periodic structure may, if desired, comprise regions of alternating birefringence, such as a Bragg grating, either in a waveguide layer or a cladding layer. Focal power is introduced (1) by providing focal power in the input grating coupler to the waveguide with a curved grating structure, (2) by varying the pitch of the birefringent mode separator extending in a direction transverse to the optical axis of the propagating beam, or (3) by introducing a surface grating with a varying pitch in a direction transverse of the optical axis.
Abstract:
An oxygen-reactive ion etch barrier (2) in a multi-layer resist structure (1, 2, 3) consists of polysilane having a molecular weight above 4000 and a glass transition temperature above 100 DEG C. As the polysilane is a positive acting resist which is particularly sensitive to wavelengths less than 375 nm, the resist structure need have only two layers if equipment is available to expose the polysilane layer to radiation of less than 375 nm wavelength.
Abstract:
Compositions are disclosed having the formula (3): [C']k[Ta(O2)x(L')y] (3), wherein x is an integer of 1 to 4, y is an integer of 1 to 4, Ta(O2)x(L')y has a charge of 0 to -3, C' is a counterion having a charge of + 1 to +3, k is an integer of 0 to 3, L' is an oxidatively stable organic ligand having a charge of 0 to -4, and L' comprises an electron donating functional group selected from the group consisting of carboxylates, alkoxides, amines, amine oxides, phosphines, phosphme oxides, arsine oxides, and combinations thereof. The compositions have utility as high resolution photoresists.
Abstract:
An approach is presented for designing a polymeric layer for nanometer scale thermo-mechanical storage devices. Cross-linked polyimide oligomers are used as the recording layers in atomic force data storage device, giving significantly improved performance when compared to previously reported cross-linked and linear polymers. The cross-linking of the polyimide oligomers may be tuned to match thermal and force parameters required in read-write-erase cycles. Additionally, the cross-linked polyimide oligomers are suitable for use in nano-scale imaging.