Extreme miniaturization of infrared spectrometers is critical for their integration into next-generation consumer electronics, wearables and ultrasmall satellites. In the infrared, there is a necessary compromise between high spectral bandwidth and high spectral resolution when miniaturizing dispersive elements, narrow band-pass filters and reconstructive spectrometers. Fourier-transform spectrometers are known for their large bandwidth and high spectral resolution in the infrared; however, they have not been fully miniaturized. Waveguide-based Fourier-transform spectrometers offer a low device footprint, but rely on an external imaging sensor such as bulky and expensive InGaAs cameras. Here we demonstrate a proof-of-concept miniaturized Fourier-transform waveguide spectrometer that incorporates a subwavelength and complementary-metal–oxide–semiconductor-compatible colloidal quantum dot photodetector as a light sensor. The resulting spectrometer exhibits a large spectral bandwidth and moderate spectral resolution of 50 cm⁻¹ at a total active spectrometer volume below 100 μm × 100 μm × 100 μm. This ultracompact spectrometer design allows the integration of optical/analytical measurement instruments into consumer electronics and space devices.

Lead halide perovskites (LHPs) have attracted significant attention for their exceptional optoelectronic properties, positioning them as prime candidates for next‐generation electronics such as photodetectors (PDs), lasers, light‐emitting diodes (LEDs), and memristors. However, integrating these materials into device architectures with CMOS‐compatible technologies in a simple manner remains a critical challenge. This study introduces a universal method leveraging standard lithographic patterning to fabricate high‐performance LHP PDs for red (R), green (G), and blue (B) color detection separately. Through optimization of the device stack and etching conditions, perovskite PDs are pixelated using a one‐step lithography and pulsed argon (Ar) milling process. The resulting devices exhibit typical perovskite PD responsivity (0.3 A W ⁻¹ ), low dark current density (less than 10 ⁻⁶ mA cm ⁻² ), high detectivity (over 10 ¹³ Jones), and short fall time (sub‐20 ns without bias). This approach not only enhances device performance but also paves the way for scalable production of perovskite‐based optoelectronic devices. The versatility and effectiveness of this method highlight its potential for broad applicability in CMOS‐compatible perovskite‐based image sensor technology.

In the last two decades, there have been several proposals for Intraoral Computer Interfaces (ICI), with demonstrations of novel technologies mostly aimed at assistive devices or in hand-free scenarios. This paper demonstrates a case study for wearable ICIs that allows users to train their tongue muscles with gamified myofunctional therapy: a method that can reduce snoring and mild sleep apnea. This demonstrates a novel application of ICIs together with new design and technological solutions for fabricating such devices. We also discuss the various challenges associated with the design of ICIs and ICI based interactions to lay the groundwork for future research, prototypes and a broader exploration of ICI application areas.

THz-Time domain spectroscopic imaging is demonstrated combining a robotic scanning method with continuous signal acquisition and holographic reconstruction of the object to improve the imaging resolution. We apply the method to a metallic Siemens star in order to quantify resolution and to wood samples to demonstrate the technique on a non-metallic object with an unknown structure.