Разработка метода темплатного синтеза наноструктур в алюмооксидных матрицах

Объектом исследования является разработка метода темплатного синтеза наноструктур в алюмооксидных матрицах. Цель работы являются синтез матрицы АОА методом двухступенчатого анодирования и разработка методики темплатного синтеза металлических наноструктур в матрице АОА. Область применения: мембранные технологии, оптика, микроэлектронные устройства, матрицы для темплатного синтеза. В будущем планируется проведение исследования нанокомпозитов на основе кобальта, полученных в матрице АОА, изучение режима формирования наноструктуры и применения таких материалов.The object of research is the development of a template synthesis method for nanostructures in alumina matrices. The aim of the work is the synthesis of the AOA matrix by the method of two-stage anodization and the development of a template synthesis technique for metal nanostructures in the AOA matrix. Scope: membrane technologies, optics, microelectronic devices, matrices for template synthesis. In the future, it is planned to conduct research on cobalt-based nanocomposites obtained in the AOA matrix, to study the regime of nanostructure formation and the use of such materials.In the future, it is planned to conduct research on cobalt-base

Hybrid integration of III/V lasers on a silicon-on-insulator (SOI) optical board

Abstract: Heterogeneous integration of III-V semiconductor materials on a silicon-on-insulator (SOI) platform has recently emerged as one of the most promising methods for the fabrication of active photonic devices in silicon photonics. For this integration, it is essential to have a reliable and robust bonding procedure, which also provides a uniform and ultra-thin bonding layer for an effective optical coupling between III-V active layers and SOI waveguides. A new process for bonding of III-V dies to processed siliconon-insulator waveguide circuits using divinylsiloxane-bis-benzocyclobutene (DVS-BCB) was developed using a commercial wafer bonder. This "cold bonding" method significantly simplifies the bonding preparation for machine-based bonding both for die and wafer-scale bonding. High-quality bonding, with ultra-thin bonding layers (<50 nm) is demonstrated, which is suitable for the fabrication of heterogeneously integrated photonic devices, specifically hybrid III-V/Si lasers. K. Mayora, "Novel three-dimensional embedded SU-8 microchannels fabricated using a low temperature full wafer adhesive bonding," J. Micromech. Microeng. 14(7), 1047-1056 (200

Endpoint detection for CH4/H2 reactive ion etching of InGaAsP heterostructures by mass spectrometry

Mass spectrometry has been shown to be a suitable tool for endpoint detection during etching of InGaAsP heterostructures in a reactive plasma of CH4/H2. Among the volatile etching products PH4+ can be detected with the highest sensitivity and discrimination. A depth resolution of 5 nm could be obtained

A reliable fabrication technique for very low resistance ohmic contacts to p-InGaAs using low energy Ar+ ion beam sputtering

A fabrication technique for non-alloyed Au/Pt/Ti ohmic contacts to p-InGaAs (NA=1*1020 cm-3) is discussed. The semiconductor surface is cleaned by Ar+ ions immediately followed by the metal deposition by electron beam evaporation. The low energy (60 eV) Ar+ ion etching removes the residual oxide layer existent on the semiconductor surface. The contact is formed by rapid thermal processing (RTP) at 400+or-C. It is shown that extremely low specific contact resistances (rc =6*10-8 Omega -cm2) can be achieved, even for 2.5 mu m contact widths, and that the contacts produced exhibit excellent homogeneity and improved uniformity over wet chemically pre-cleaned ones

Hybrid integration of III/V lasers on a silicon-on-insulator (SOI) optical board

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Integrated WDM transmitter

The integration of lasers as WDM transmitters offers mainly three challenges: to meet the proper wavelengths, to combine the emission of the lasers effectively to one output port and to solve the problem of thermal crosstalk

Monolithically integrated heterodyne receivers based on InP

Future OFDM communication systems demand the availability of high performance and low cost OEICs. The achievement of a completely integrated polarization diversity heterodyne receiver makes the heterodyne technology favoured for high capacity OFDM-systems in terms of performance to cost. Milestones towards this monolithically integrated coherent receiver are reviewed and features of the first polarization diversity heterodyne receiver OEIC are reported

Monolithic mode-locked laser on GaInAsP/InP for 160 Gb/s TDM

Mode-locked laser OEICs on GaInAsP/InP for 160 Gb/s application in hybrid mode-locking operation are demonstrated with 40 GHz repetition rate, 2.4 ps pulse length, 230 fs timing jitter, and >1 mW fiber coupled power

Integration of a tunable 4-section DBR laser within polarization diversity heterodyne receiver PICs

Polarization diversity heterodyne receiver PICs including a tunable 4-section DBR laser as a local oscillator have been successfully fabricated for the first time. PIC design and fabrication are described and characteristics of the integrated laser components are presented

Liposomes alter thermal phase behavior and composition of red blood cell membranes

Stoll C, Stadnick H, Kollas O, et al. Liposomes alter thermal phase behavior and composition of red blood cell membranes. Biochimica et Biophysica Acta (BBA) - Biomembranes. 2011;1808(1):474-481.Unilamellar liposomes composed of natural phospholipids provide a new promising class of protective agents for hypothermic storage, cryopreservation, or freeze-drying of red blood cells (RBCs). In this study, FTIR spectroscopy, MALDI-TOF MS, and colorimetric assays were used to investigate the effects of liposomes composed of a homologous series of linear saturated phosphatidylcholine phospholipids (18:0; 16:0; 14:0; 12:0) on RBC membranes. RBCs were incubated with liposomes at 37 degrees C and both the liposomal and the RBC fraction were analyzed after incubation. FTIR studies showed that liposomes composed of short acyl chain length lipids cause an increase in RBC membrane conformational disorder at suprazero temperatures, whereas long acyl chain length lipids were found to have little effects. The increased lipid conformational disorder in the RBC membranes coincided with a decrease in the cholesterol-to-phospholipid ratio. The opposite effects were found in the liposomes after incubation with RBCs. MALDI-TOF MS analysis showed the presence of short acyl chain length lipids (14:0 and 12:0) in RBC membranes after incubation, which was not observed after incubation with liposomes containing long acyl chain length lipids (18:0 and 16:0). Liposomes alter RBC membrane properties by cholesterol depletion and lipid addition. (C) 2010 Elsevier B.V. All rights reserved