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Current artificial intelligence lacks the ability to perceive the emotions conveyed through human touch. Here, the study develops a bio-inspired hairy electronic skin that can recognize emotions from touch, facilitating natural affective communication for robots.

Using channel-level decoupling to design independent photovoltage channels for each Stokes parameter with minimal crosstalk, a metaphotonic photodetector can be created that provides direct Stokes quantification.

Electronic skins are limited in perceiving liquid sliding information as realistically as humans and provide real-time feedback. Here, Xu et al. developed a self-powered bionic droplet electronic skin with co-layer interlaced electrode networks and overpass connection technology to sense complex water motion.

Real-time and continuous monitoring of plant immune responses is essential for plant immunity study and crop pathogen management. Here, the authors report an ultra-thin electronic tattoo patch made of silver nanowire films for multiple plants immune response monitoring using electrical impedance spectroscopy.

The Internet-of-Things era desiderates miniature spectrometers. Here, the authors present a chip-scale spectrometer through synergizing MEMS modulation and autoencoder denoising, achieving accurate, broadband, and energy-efficient spectral analysis.

Ultrahigh electromechanical response is accomplished by inducing extreme structural instability from competing antiferroelectric and ferroelectric orders.

Isopropyl alcohol can play a significant role in anti-virus diagnosis but generally yields limited response in conventional detection. Here, authors propose a methodology of AI-enhanced ion mobility and mid-infrared spectroscopy for accurate gas identification despite presence different carbon-based gases.

Infrared spectroscopy with plasmonic nanoantennas is limited by small overlap between molecules and hot spots, and sharp resonance peaks. The authors demonstrate spectral multiplexing of hook nanoantennas with gradient dimensions as ultrasensitive vibrational probes in a continuous ultra-broadband region and utilize machine learning for enhanced sensing performance.

A photodetector responding to only circularly polarized light is developed. It has a ring-shaped form, consisting of plasmonic nanostructures on a graphene sheet. Its zero-bias responsivity and detectivity of ellipticity in the mid-infrared at room temperature are 392 V W⁻¹ and 0.03° Hz^−1/2, respectively.

Current wearable solutions for Virtual Reality (VR) have limitations of complicated structures and large driven power. Here, the authors report a highly integrated ring consisting of multimodal sensing and feedback units for augmented interactions in metaverse.

Next-generation flexible and wearable sensors are a promising technology to enhance the functionality of human-machine interfaces. Here, the authors report triboelectric bi-directional sensors integrated into an exoskeleton system for enhanced degrees of freedom in movement.

Mid-infrared polarization detectors based on nanoantenna-mediated few-layer graphene are demonstrated. By tuning the orientation of nanoantennas, the polarization ratios vary from positive to negative, and cover values from 1 to ∞/−∞ then to −1.

Though wearable gloves are widely used for gesture associated applications (e.g. sign language recognition), sentence identification of sign language remains a challenge. Here, the authors report AI-enabled recognition system helps barrier-free communication between signers and non-signers.

Molecular vibrations serve as valuable signatures for the constituent elements and bonding in compounds. Here, using Surface-Enhanced Infrared Absorption spectroscopy, the authors study refractive index dependent vibrations of surface phonon polaritons and surface plasmon platform, targeting dynamic biomonitoring.

Ubiquitous shadows cast from moving objects in hybrid energy-harvesting systems are undesirable as they degrade the performance of the photovoltaic cells. Here the authors report the shadow of the moving object in a hybrid energy-harvesting system shortens charging time to charge a self-charging power system.

Designing efficient sensors for human machine interaction remains a challenge. Here, the authors present a soft robotic fingers system based on a triboelectric nanogenerator (L-TENG) sensor to capture the continuous motion of soft gripper and a soft tactile (T-TENG) sensor for tactile sensing, that can achieve an object recognition accuracy of 98.1%.

Designing efficient and fast monitoring and response systems for smart building/home applications remains a challenge. Here, the authors propose a smart floor monitoring system developed through the integration of self-powered triboelectric sensing mechanism and deep learning data analytics.

An ultrathin haptic interface can selectively activate different cutaneous receptors in the skin, providing rich haptic sensation information in virtual reality.

Here, graphene-based plasmonic metamaterials are used to generate an artificial bulk photovoltaic effect, enabling the realization of mid-infrared photodetectors with enhanced responsivity and calibration-free polarization detection at room temperature.

Here, the authors demonstrate excitation and active tuning of sharp Fano resonances in a MEMS reconfigurable metasurface possessing multiple-input-output states. They realize XOR, XNOR, NOT and NAND logic gate operations by using two independently controllable electrical inputs and an optical readout using terahertz beam.

Recent advances in virtual reality technologies accelerate the immersive interaction between human and augmented 3D virtual worlds. Here, the authors discuss olfactory feedback technologies that facilitate interaction with real and virtual objects and the evolution of wearable devices for immersive VR/AR applications.

We demonstrate surface-enhanced vibrational circular dichroism spectroscopy for chiral mixture detection, enabled by MIR chiral metamaterial platform.