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In this paper, thin film diamond resonators on Si wafer for high sensitivity force sensing have been developed. Patterned diamond structures have been formed on Ir/YSZ/Si substrate. The completed diamond resonator of cantilever shows a resonance frequency of 51.0 kHz with a quality factor of 14911. The both clamped resonator shows the force sensitivity of 3.36×10−13 N/Hz0.5 at 229.3 kHz with 23500...
Micro-bubbles have been widely used in microfluidic systems. In this paper, we propose a micro-manipulation technique based on opto-thermally generated bubbles in open chip environment. Micro particles can be captured and moved effectively with a bubble by modulating the position of the laser spot. Analysis, simulations and experiments are involved. This technique doesn't require complicated equipment...
We have analyzed inter-particle potential during binary collision of two fine particles suspended at the plasma/sheath boundary. For this analysis, we have employed a tracking analysis which gives time evolution of the particle position automatically from the movie of particle behavior. The fluctuation of inter-particle potential is originated from a major component of the plasma potential fluctuation...
This paper focuses on the study of an ultrathin Diamond-Like-Carbon layer acting as the mobile part of 2D microresonators. To overcome the low electrical conductivity of amorphous carbon, DLC is used in combination with few nanometer-thick metal layers to manufacture 15 to 20 nm thick membranes suspended over 0.8 to 2.3 µm wide trenches. After a description of the experimental means performed on these...
This paper presents physical nano-steganography for secret data transmission. The experimental code was engraved into the base polycarbonate plastic layer of a compact disc by atomic force microscopy nanolithography. The advantage is that such information cannot be found using optical microscopes and it is very problematic to find it even by the most of electron microscopes due to the subtle variations...
Three dimension (3D) printers are commercially available with resolution as high as micrometers. Further miniaturization would require development of both materials, instruments, as well as methodology in order to attain required spatial precision to reach nanometer scale. This presentation reports our recent progress in producing 3D nanostructures using an atomic force microscopy (AFM) based method...
This paper presents an assembled comb-drive XYZ-microstage with large displacements for the scanning of magnetic resonance force microscopy (MRFM) at cryogenic environment. The scanning XYZ-microstage with little affection to the thermal variation and magnetic fields is required. The comb-drive XYZ-microstage is assembled with an XY-microstage, two Z-actuators and a silicon base substrate using a...
Carbonaceous deposits in oil exposed surfaces are responsible for compromising performance and reducing profitability across the hydrocarbons value chain. In particular, in upstream operation, fouling between the well and the production facility has been found to reduce flow, availability and reliability resulting in lost production. Thus, a better understanding of the processes leading to the deposition...
Surface effect and nonlocal effect are incorporated into classical Euler beam equation to study the static bending behavior of nanobridges. The generalized Young-Laplace equation and core-shell model are used to model the surface effect. The nonlocal effect is introduced in bending moment equation. Results show that a positive surface tension causes the nanobridge more difficult to bend while the...
Small insects have agile performance in flight, walking locomotion, and so on. Currently, many researchers have been focusing the dynamics of their locomotion. We have been developing micro scaled piezoresistive force sensors to measure forces exerted by insects during flying, walking and jumping. In this paper, we introduce these sensors which are specialized for target insects.
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