The results of nonintrusive high-resolution imaging of the magnetic states present in wide Co rings with a small inner hole 1.7 m outer diameter, 300 nm inner diameter, and 700 nm width are presented. Rather than the reproducible onion state commonly found in rings, a prevalent triangle state is observed, with other magnetic states characteristic of disks also occurring. The uniformity and the ...

The manipulation of optical waves in the subwavelength scale is limited by diffraction. In the vicinity of a narrow aperture, the amplitude of the electric field is approximately uniform and the transmissivity is extremely low. Here we show that despite these fundamental constraints it may be possible to transport and redirect a complex electromagnetic image through a tiny subwavelength hole wi...

This paper deals with the conversion of a digital image of a person into a portrait engraved on the surface of a material (white foam with a dark surface). In this approach, a series of holes of varying diameter are drilled into the surface. A mapping is made from a set of numbers (RGB values) in the input image to a set of diameters for the holes to be drilled. The holes expose a white inner c...

Each of two parts has K coordination holes with the intent that each hole on onepart is paired and to be pinned with a corresponding hole on the other part. Whilethe nominal hole centers for each hole pair are identical, the actual hole centers willdeviate from their nominal values in some random fashion reflecting the inherent holecentering accuracy of the drilling process....

This thesis involves an extensive experimental and theoretical study of the thermoelectric-related transport properties of Bii_2Sb. nanowires, and presents a theoretical framework for predicting the electrical properties of superlattice nanowires. A template-assisted fabrication scheme is employed to synthesize Bi-based nanowires by pressure injecting liquid metal alloys into the hexagonally pa...

In experiments on the conversion of the PHELIX laser light into soft X-rays, the Petawatt High-Energy Laser system for Ion beam eXperiments – “Phelix” (Nd:glass, =1054 nm) was used at the basic frequency. The chirped laser pulse of 1.4 ns duration and energies up to 270 J was focused onto the target by a lens with 4 m focal length. The diameter of the focal spot on the wall of the primer hohlra...

The structural components of reinforced concrete that withstand the tensile stress will be bonding affected by friction between reinforcing bar and concrete. Anchoring depth, reinforcement diameter, quality are commonly assumed to influence bond strength; besides, support distance may one influencing factors. samples in this study were cylindrical specimens with a diameter 15 cm 20 for compress...

Diffusion-shaped film holes with compound angles are currently being investigated for high temperature gas turbine airfoil film cooling. An accurate prediction of the coolant blowing rate through these film holes is essential in determining the film effectiveness. Therefore, the discharge coefficients associated with these film holes for a range of hole pressure ratios is essential in designing...

A 31-year-old man sustained a 1,064-nm Q-switched Nd:YAG laser injury to his left eye. One month after the injury, the fundus and optical coherence tomography (OCT) examination demonstrated a full-thickness macular hole of approximately 820 μm in diameter. After vitrectomy and internal limiting membrane peeling, OCT showed closure of the hole and a marked thinning of the foveal depression. Afte...