61 research outputs found
Casimir forces on a silicon micromechanical chip
Quantum fluctuations give rise to van der Waals and Casimir forces that
dominate the interaction between electrically neutral objects at sub-micron
separations. Under the trend of miniaturization, such quantum electrodynamical
effects are expected to play an important role in micro- and nano-mechanical
devices. Nevertheless, utilization of Casimir forces on the chip level remains
a major challenge because all experiments so far require an external object to
be manually positioned close to the mechanical element. Here, by integrating a
force-sensing micromechanical beam and an electrostatic actuator on a single
chip, we demonstrate the Casimir effect between two micromachined silicon
components on the same substrate. A high degree of parallelism between the two
near-planar interacting surfaces can be achieved because they are defined in a
single lithographic step. Apart from providing a compact platform for Casimir
force measurements, this scheme also opens the possibility of tailoring the
Casimir force using lithographically defined components of non-conventional
shapes
Rasch analysis holds no brief for the use of the Dermatology Life Quality Index (DLQI) in Chinese neurodermatitis patients
Translation, cultural adaptation, and validation of the American Skindex-29 quality of life index
Predicting compositions of microbial communities from stoichiometric models with applications for the biogas process
Using the Dermatology Index of Disease Severity (DIDS) to assess the responsiveness of dermatitis.
‘On the Altar of the Nation’: Narratives of Heroic Sacrifice in the American Civil War
Cutaneous metastases from different internal malignancies: a clinical and prognostic appraisal
Degradation of an ether–alcohol (3-ethoxypropan-1-ol) by photo-Fenton-generated •OH radicals: products analysis and formation pathways; relevance to atmospheric water-phase chemistry
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