Results 241 to 250 of about 1,628,358 (345)

Facile Synthesis of a Carbon Nano Dot‐Based Wearable Flexible Thermoelectric Device

open access: yesAdvanced Materials Technologies, EarlyView.
A wearable proto‐type device made with low‐cost, bio‐friendly, and environmentally safe materials that can be readily fabricated to generate energy from low waste temperatures is demonstrated. The Carbon Nano Dot composite thin films are supported by a flexible cellulose substrate that harnesses thermoelectric principles to generate power from body ...
Al Jumlat Ahmed   +8 more
wiley   +1 more source

Anti‐Counterfeiting Tags with Camouflaged QR Codes on Nanocavities, Using Polymer‐Dispersed Liquid Crystals

open access: yesAdvanced Materials Technologies, EarlyView.
A QR code, printed through a commercial printer on a thin plastic foil, pre‐coated with a nanocavity is proposed as an anti‐counterfeiting label. Nanocavity imparts distinctive optical properties in terms of light reflection and transmission. A thin layer of polymer‐dispersed liquid crystals (PDLC) is used to camouflage the QR code, that become ...
Giuseppe Nicoletta   +6 more
wiley   +1 more source

Self‐Detecting Mid‐Infrared Dual‐Comb Spectroscopy Based on High‐Speed Injection‐Locked Quantum Cascade Lasers

open access: yesAdvanced Photonics Research, EarlyView.
A compact self‐detecting dual‐comb spectroscopy (DCS) system based on dispersion‐engineered, high‐speed packaged quantum cascade lasers (QCLs) at λ≈4.6 μm under coherent injection locking is demonstrated. Broad multiheterodyne comb signal with reduced tooth linewidths by orders of magnitude is recorded.
Yu Ma   +14 more
wiley   +1 more source

Microwave Monitoring by Compact Carbon Nanotube Photo‐Thermoelectric Sensors Beyond the Diffraction Limit Toward Ultrabroadband Non‐Destructive Inspections

open access: yesAdvanced Sensor Research, EarlyView.
This work overcomes long‐standing crucial technical difficulties in miniaturizing micro‐wave detectors, caused by the longer‐wavelength diffraction limit, with carbon nanotube (CNT) film photo‐thermoelectric sensors. The CNT film sensor exhibits sensitive micro‐wave detection operations with signal‐to‐noise ratios over 1400 at compact device sizes ...
Qi Zhang   +11 more
wiley   +1 more source

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