  We report on the first observation of electroluminescence amplification with
a Microstrip Plate immersed in liquid xenon. The electroluminescence of the
liquid, induced by alpha-particles, was observed in an intense non-uniform
electric field in the vicinity of 8-$\mu$m narrow anode strips interlaced with
wider cathode ones, deposited on the same side of a glass substrate. The
electroluminescence yield in the liquid reached a value of $(35.5 \pm 2.6)$ VUV
photons/electron. We propose ways of enhancing this response with more
appropriate microstructures towards their potential incorporation as sensing
elements in single-phase noble-liquid detectors.
