Resonance frequency simulation techniques

Finally, we note that the predictions from these simulations could be directly probed with surface spectroscopies such as sum frequency generation (SFG) spectroscopy [16]. Provided self-assembly of SAMs of different chain lengths was possible, adsorption of LKo(14, we predict, would reveal no appreciable SFG signal compared to neat SAMs, which reveal the expected helical structures. Likewise, using a combination of techniques such as surface plasmon resonance (SPR) and atomic force microscopy (AFM) [41], we propose it would be possible to study the expected increases in binding energy due to the film formation defects. Of course, this would depend on being able to synthesize in a controlled way the film-type defects. 

Figure 2 The simulated effects of magic-angle spinning (MAS) techniques on a CS-dominated Ti powder pattern at a magnetic field of 14.1 T are shown. As the spinning rate increases, the powder pattern is broken up into the central isotropic resonance, flanked by a decreasing number of spinning sidebands separated by the spinning frequency, until only the isotropic resonance is left. This simulation assumes CQ=0,i2=750 ppm, 5jso=0 ppm, and jc=0.5, is intended only as an illustration of general MAS effects, and does not include the Ti powder pattern.

As an example of this method, we present a simulation of this technique using experimentally realistic values (/). We assume that the laser source is an ultrabroadband titanium-sapphire laser producing transform-limited pulses of uniform power spectral density between 700-1000 nm. The bandwidth from 800-1000 nm is reserved for stimulating CARS, while the bandwidth from 700-800 nm is used as the reference pulse. In this simulation, we desire to simulate the measurement of the relative amounts of DNA (deoxyribonucleic acid) which has a resonance at 1094 cm" and RNA (ribonucleic acid) which has a resonance at 1101 cm A hypothetical Raman spectrum was created which has Lorentzian resonances at both frequencies. A pulse is designed such that... 

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