Investigation of stretchable strain sensor based on CNT/AgNW applied in smart wearable devices.

Stretchable strain sensor, an important paradigm of wearable sensor which can be attached onto clothing or even human skin, is widely used in healthcare, human motion monitoring and human-machine interaction. Pattern-available and facile manufacturing process for strain sensor is pursued all the time. A carbon nanotube (CNT)/silver nanowire (AgNW)-based stretchable strain sensor fabricated by a facile process is reported here.

Hierarchical highly ordered SnO nanobowl branched ZnO nanowires for ultrasensitive and selective hydrogen sulfide gas sensing.

Highly sensitive and selective hydrogen sulfide (HS) sensors based on hierarchical highly ordered SnO nanobowl branched ZnO nanowires (NWs) were synthesized via a sequential process combining hard template processing, atomic-layer deposition, and hydrothermal processing. The hierarchical sensing materials were prepared in situ on microelectromechanical systems, which are expected to achieve high-performance gas sensors with superior sensitivity, long-term stability and repeatability, as well as low power consumption. Specifically, the hierarchical nanobowl SnO@ZnO NW sensor displayed a high sensitivity of 6.

Ultrahigh-Sensitive Finlike Double-Sided E-Skin for Force Direction Detection.

Flexible pressure sensing is required for the excellent sensing performance and dexterous manipulation of the measured objects in their potential applications. Particularly, the ability to measure and discriminate the direction of force, contact surface, and contact location in real time is crucial for robotics with tactile feedback. Herein, a three-dimensional elastic porous carbon nanotube (CNT) sponge is synthesized by chemical vapor deposition, which is successfully applied in the piezoresistive sensor.

Precise preparation of WO@SnO core shell nanosheets for efficient NH gas sensing.

Development of high-performance ammonia (NH) sensor is imperative for monitoring NH in the living environment. In this work, to obtain a high performance NH gas sensor, structurally well-defined WO@SnO core shell nanosheets with a controllable thickness of SnO shell layer have been employed as sensing materials. The prepared core shell nanosheets were used to obtain a miniaturized gas sensor based on micro-electro-mechanical system (MEMS).

Multi-path photon-phonon converter in optomechanical system at single-quantum level.

Based on photon-phonon nonlinear interaction, a scheme of controllable photon-phonon converters is proposed at single-quantum level in a composed quadratically coupled optomechanical system. With the assistance of the mechanical oscillator, the Kerr nonlinear effect between photon and phonon is enhanced so that the single-photon state can be converted into the phonon state with high fidelity even under the current experimental condition that the single-photon coupling rate is much smaller than mechanical frequency (g ≪ ωm). The state transfer protocols and their transfer fidelity are discussed analytically and numerically.