Optical near-field recording

Hamano, M., and Irie, M. Rewritable near-field optical recording on photochromic thin aims. Jpn. J. Appl. Phys. 35, 1764, 1996. 

J. Gnerra, D. Vezenov, P. Sullivan, W. Haimberger, and L. Thulin, Near-field optical recording without low-flying heads Integral near-field optical (INFO) media. Japanese Jonmal of Applied Physics Part 1-Regular Papers Short Notes Review Papers 41 p. 1866-1875 (2002). 

T. Matsumoto, Near-Field Optical Head Technology for High Density, Near-Field Optical Recording, in M. Ohtsu (ed.), Progress in Nano-Electro-Optics ill,... 

M. Hamano and M. Irie, Rewritable near-field optical recording on photochromic thin films, Japanese Journal of Applied Physics, vol. 35, no. 3, pp. 1764-1767, 1996. 

The term probe or proximal probe used in this document refers to any of die wide variety of tips used in tunneling, force, and near-field optical microscopies. That is, a metallic, semiconducting, or optical-fiber probe is positioned in close proximity to a sample for die purposes of recording images. 

FIGURE 3.18 Images showing representative data from phase-separated domains of poly(styrene) in a poly(methyl methacrylate) matrix. Left sample topography. Right apertureless infrared scattering near-field optical images of poly(styrene) domains in a poly(methyl methacrylate) film recorded at the frequencies shown. 

Amorphous thin recording medium (300 nm) was prepared by vacuum evaporation of dithienylethene 10a on a glass substrate and used for the near-field optical... 

In this chapter, we also describe the near-field recording technique. We can greatly reduce the bit size by using near-field optics. " ... 

Figure 21. Six sequential images of the same sample area of individual carbocyanine dye molecules spread over a polymethylmethacrylate (PMMA) film as recorded by scanning near field optical microscopy. The image dimensions are 2.3 x 2.7-/nn cut out from 4 x 4-fim records of 256 x 256 data points. The excitation polarization was random in (A-D) and linear along y and x, respectively, in ( ) and (F). The emission polarization was measured along y and x in (B) and (C) and not otherwise. Some fluorescence spots are labeled for discussion in the text. The various shapes of the fluorescence peaks (circular spots, rings, arcs, and double arcs) are striking. These shapes can be explained by molecular dipoles being excited by the inhomogeneous electric field at the aperture. (Adopted from [83].)...

Nishida, T., Matsumoto, T., Akagi, F., Hieda, H., Kikitsu, A, Naito, K. (2007). Hybrid recording on bit-patterned media using a near-field optical head. Journal of Nanophotonics, Vol. 1, 011597,2007... 

Adapted from the technology implemented in scanning near field optical microscopy, SECM with shear-force detection involves vibrating the SECM tip with a piezoelectric acmator and recording variations in resonance frequency when the tip is within a few hundred nanometers from the sample surface [124,125]. This is a fast method when operated in real time during the scan, but it is tricky to implement in practice. The tip must be long and narrow to be appropriately flexible but, more importantly, the control loop parameters need to be frequently adjusted as the resonance and shear force properties vary with the tip dimensions, solution viscosity, and sometimes with the elasticity of the sample surface. Moreover, the parameters need to be readjusted if the tip is removed for polishing. 

The evolution of Raman instrumentation has been recently reviewed (Lewis, 2001a), from the first measurements by C.V. Raman, when the spectra were excited with a mercury lamp and recorded with a small prism spectroscope equipped with a photographic plate (Raman, 1928), to the new high resolution microscopes, in Raman scanning near-field optical microscopy (Adar, 2001). This review includes Raman microscopy (Baldwin, 2001), Raman imaging (Treado, 2001), the adaptation of Raman spectrometry to industrial environment (Slater, 2001), Raman spectroscopy of catalysts (Wachs, 2001) and process Raman spectroscopy (Lewis, 2001b). 

Near-Field Optics for Heat-Assisted Magnetic Recording (Experiment, Theory, and Modeling)... 

Near-Field Optics for Heat-Assisted Magnetic Recording... 

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