the effect of vacuum-ultraviolet laser wavelengths on the surface treatment of polyolefinic polymers

the laser-induced modification of the surface morphology of poly(propylene) fibers and films was investigated. it is known that strongly absorbing fibers such as poly(ethylene terephthalate) and polyamide obtain characteristic surface morphologies after treatment with 193 or 248 nm laser irradiation. polyolefinic material cannot be modifi..

new biosensor using shear horizontal surface acoustic wave device

this paper describes a new biosensor to detect an enzyme reaction in liquid using surface acoustic wave (saw) devices fabricated on 36 degrees -rotated y-cut, x-propagating litao/sub 3/ the sensing wave on the substrate is a predominantly shear-horizontal-mode saw (sh-saw) and is affected by a strong acoustoelectric interaction between th..

cleaning procedures for uhv cluster-tool mos fabrication

the authors have investigated the effect on a silicon surface of both wet chemical and cluster-tool uv/ozone cleaning, prior to uhv processing to fabricate mos test structures. the physical and chemical condition of the si surface has been examined by scanning tunnelling and atomic force microscopy (stm, afm) and medium energy ion scatter..

influence of surface pre-cleaning on electrical properties of rapid thermal oxide and rapid thermal chemical vapor deposition oxide

various surface pre-cleaning processes for rapid thermal in-situ polysilicon/oxide/silicon stacked gate formation have been evaluated. mos capacitors have been fabricated to assess the effects of surface pre-cleaning on the quality of both rapid thermal oxide (rto) and rapid thermal chemical vapor deposition (rtcvd) oxide measurement resu..

a new two-step plasma-assisted surface cleaning-oxidation and film-deposition process sequence for the formation of si(100)/sio/sub 2/ interfaces with low densities of interfacial traps

device quality sio/sub 2/ films have been deposited by remote plasma enhanced chemical vapor deposition (rpecvd). the substrate surface cleaning, both ex-situ and in-situ, influence the density of trapping states at the si/sio/sub 2/ interface. pre-deposition exposure to plasma-generated atomic-h significantly reduces hydrocarbon and o co..

automated closed-loop cleaning using biogenerated alcohols

a new series of formulations has been developed based on an alcohol in commercial use in other applications for over 30 years the formulations are used in a range of applications in electronics manufacturing today, including plated through-hole and surface mount assembly, hybrid circuits fabrication, precision parts cleaning, and bare boa..

a photonic parallel memory with air-bridge interconnections for large scale integration

surface passivation films for the photonic parallel memory (ppm) are studied, motivated by the fact that the dissipation current of the ppm is strongly influenced by the surface conditions several passivation films are investigated, and the ppm covered with the native oxide showed the lowest holding current. to utilize the native oxide as..

study of surface modified poly(ethylene) yarns

spectra fibers and fabrics have been treated to enhance surface friction to determine if ballistic penetration resistance of spectra fabric can be increased with improved interfiber friction scanning electron microscopy (sem) has shown the extent of surface modification for plasma treated spectra yarns and the uniformity of coverage for d..

designing surface properties of textile fibers by uv-laser irradiation

the irradiation of polymeric material by pulsed uv lasers generates characteristic modifications of the surface topography of the polymer beside other effects. the resulting surface properties may have an important impact in textile processing, as they can affect technical properties of synthetic and even natural fibers, e.g. particle and..

fabrication aspects of microwave devices, including ramp-type high-t/sub c/ josephson junctions and log-periodic antennas

the authors describe the development of high-t/sub c/ josephson junction devices for applications at millimeter wave frequencies. these devices consist of ramp type ybco/pbco/ybco josephson junctions that are equipped with a noble metal log-periodic antenna. growth conditions of all layers, as well as etching, clearing and annealing proce..