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The control over bacterial diseases requires the development of novel antibacterial agents. The use of antibacterial nanomedicines is one of the strategies to tackle antibiotic resistance. The study was designed to assess the antimicrobial activity of cerium oxide (CeO2) nanoparticles (NP) of two different sizes (CeO2 NP1 [1–2 nm] and CeO2 NP2 [10–12 nm]) and their cytotoxicity towards eukaryotic...
This paper presents a directed self-assembly (DSA) approach for assembling small electronic components, such as semiconductor dies, into sparse 2D arrays using diamagnetic levitation. The dies attached to a diamagnetic layer can be levitated at a room temperature over a stage made of magnets arranged in a checkerboard pattern. By selecting a proper die design, levitation height, and vibration pattern...
This paper reports on a directed self-assembly approach suitable for assembly of mesoscopic dies, such as LEDs, in a parallel fashion. This approach utilizes magnetic force, shape recognition, and capillary force of the solder to assemble the dies on the receiving substrate in a correct orientation. Assembly takes place in liquid medium. Effects of the die geometry, assembly setup and magnet configuration...
This paper reports on a directed self-assembly process for LED assembly on a large area flexible substrate. The presented approach involves fluidic handling of small semiconductor dies and their directed self-assembly on the flexible substrate using a magnetic force. A thick lightweight layer created on the die surface is used as a buoyant layer. Techniques and yields for introduction of dies into...
The advantages of copper wire bonding compared to gold wire bonding, such as lower material costs, have led to an increased interest in reliability of copper bonds. The knowledge of the bonded wire microstructure is essential to achieve high-reliability bonding. This study focuses on the metallographic preparation of a bonded cross-sectioned sample for achieving a high-quality planar surface, suitable...
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