Silver particles, predominantly with the size of 40–80 nm, were immersion deposited onto porous silicon to form substrates appropriate for the detection of organic molecules by surface‐enhanced Raman scattering technique. These substrates have been demonstrated for the first time to provide detection of phospholipid molecules represented by dipalmitoylphosphatidylcholine at concentrations as low as 10−12 M when a 532 nm laser wavelength is used and 10−11 M at 633 nm wavelength. Label‐free detection is realized at these conditions.

Highly contrast epi‐surface‐enhanced coherent anti‐Stokes Raman scattering (SECARS) microimages of Au‐nanoparticle‐bound organic reporter molecule distributions at a surface of novel surface‐enhanced Raman scattering (SERS)‐active metamaterial junctions, based on nanoparticles spread over a nanostructured CeO2 faceted dielectric film, deposited on an Al sublayer, were recorded at two‐color picosecond excitation of the surface in the near‐infrared spectral range. For this, a scanning confocal laser‐based micro‐CARS spectrometer was employed. The investigations showed that at Raman resonant laser excitation of the molecules/Au‐NP conjugates immobilized on the surface strong SECARS signals can be generated with laser powers not deteriorating the conjugates. Coupling CARS with the plasmonic metamaterial structures under investigation provided excellent chemical imaging contrast (up to 400) for biochemically relevant 5‐thio(2‐nitrobenzoic acid) and 4‐mercaptophenylboronic acid reporter molecules. Taking into account easy handling and utmost long‐term stability of the investigated metamaterial junction at ambient conditions, it might be considered as a promising perspective for a single‐molecule‐sensitivity surface‐enhanced Raman scattering or SECARS biosensor.

The dissociation features in nuclear track emulsion of 9 Be, 9,10 C, and 12 N nuclei of 1.2 A GeV energy are presented. The data presented for the nucleus 9 Be can be considered as evidence that there is a core in its structure in the form of 0 + and 2 + states of the 8 Be nucleus having roughly equal weights. Events of coherent dissociation 9 C→3 3 He associated with the rearrangement of the nucleons outside the α-clustering are identified. A pattern of the charge fragment topology in the dissociation of 10 C and 12 N nuclei is obtained for the first time. Contribution of the unbound nucleus decays to the cascade process 10 C→ 9 B→ 8 Be is identified.

Surface-enhanced Raman spectroscopy (SERS) is a promising optical method for analyzing molecular samples of various nature. Most SERS studies are of an applied nature indicating a serious potential for their application in analytical practice. Dendrite-like nanostructures have great potential for SERS, but the lack of a method for their predictable production significantly limits their implementation. In this paper, a method for controllable obtaining spatially

Charge topology of fragmentation of 1.2 A GeV 7 Be nuclei in nuclear track emulsion is presented.The dissociation channels 4 He + 3 He, 2 3 He+ n, 4 He + 2 1 H are considered in detail. It is established that the events 6 Be + n amount about to 27 % in the channel 4 He + 2 1 H.