Expanding the toolbox for nanoparticle trapping and spectroscopy with holographic optical tweezers

We have developed a workstation based on holographic tweezers to optically trap, move and characterize metal nanoparticles. Our advanced darkfield imaging system allows us to simultaneously image and take spectra of single trapped metal nanoparticles. We take advantage of the beamshaping abilities of the spatial light modulator and correct for aberrations of the trapping optics. We monitor the improvement of the optical trap with video-based nanoparticle tracking. Furthermore we theoretically assess the capabilities and limitations of video-based tracking for nanoparticle position detection, in particular with respect to acquisition frequencies below the corner frequency

The Canonical Sense of Scripture: Trinitarian or Christocentric?

In this essay I develop a threefold sense for Scripture today: conventional, canonical, and contemporary. This is my “grammar” for evangelical theological hermeneutics. I explore in particular the canonical sense: the level of meaning of the biblical passage read in the light of the whole of Scripture, with Christ as the center and key. In dialogue with the Orthodox, I argue that such a christocentric approach must also be, finally, a Trinitarian one