Subwavelength angle-sensing photodetectors inspired by directional hearing in small animals

Yi, Soongyu; Zhou, Ming; Yu, Zongfu; Fan, Pengyu; Behdad, Nader; Lin, Dianmin; Wang, Ken Xingze; Fan, Shanhui; Brongersma, Mark L.

doi:10.1038/s41565-018-0278-9

Cited by 72 publications

(55 citation statements)

References 24 publications

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“…[ 11 ] Semiconductor structures at subwavelength scale naturally possess optical resonances, which provides the possibility to manipulate light–matter interactions. [ 12–20 ] Recently, many researches based on resonance structures have been carried out to improve the performance in optical instrument photodetectors and solar cells. [ 14,21–23 ] Studies of the resonance structures mainly focus on the characteristics of spherical particles or circular cylinders, which show that optical responses can be regulated with controllable Mie scattering based light–matter interaction.…”

Section: Figurementioning

confidence: 99%

“…[ 14,21–23 ] Studies of the resonance structures mainly focus on the characteristics of spherical particles or circular cylinders, which show that optical responses can be regulated with controllable Mie scattering based light–matter interaction. [ 17,19,24 ] Compared with these symmetric architectures, the nonspherical‐like rectangular structures are of most interest with the substantially different properties from their faceted, nonsymmetric morphology. [ 23,25–27 ] It is demonstrated that the silicon rectangular nanostrip induces optical resonance by the structure's leaky modes.…”

Section: Figurementioning

confidence: 99%

“…The resonant modes from the enlarged cross section can interact more effectively with the incident light, depending on the antenna effect of the nanostructures. [ 15–20 ] In previous studies, nanostrip‐based photodetectors exhibit a strong angle‐dependent optical response due to the difference of resonance strength between 1D structure and light with different incident angles. [ 15,25 ] The square cross section of nanostrips in the light determines the strengths of resonant and nonresonant channels.…”

Section: Figurementioning

confidence: 99%

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Omnidirectional Photodetectors Based on Spatial Resonance Asymmetric Facade via a 3D Self‐Standing Strategy

Pan

Zhang

et al. 2020

Advanced Materials

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Integration of photovoltaic materials directly into 3D light–matter resonance architectures can extend their functionality beyond traditional optoelectronics. Semiconductor structures at subwavelength scale naturally possess optical resonances, which provides the possibility to manipulate light–matter interactions. In this work, a structure and function integrated printing method to remodel 2D film to 3D self‐standing facade between predesigned gold electrodes, realizing the advancement of structure and function from 2D to 3D, is demonstrated. Due to the enlarged cross section in the 3D asymmetric rectangular structure, the facade photodetectors possess sensitive light–matter interaction. The single 3D facade photodetectors can measure the incident angle of light in 3D space with a 10° angular resolution. The resonance interaction of the incident light at different illumination angles and the 3D subwavelength photosensitive facade is analyzed by the simulated light flow in the facade. The 3D facade structure enhances the manipulation of the light–matter interaction and extends metasurface nanophotonics to a wider range of materials. The monitoring of dynamic variation is achieved in a single facade photodetector. Together with the flexibility of structure and function integrated printing strategy, three and four branched photodetectors extend the angle detection to omnidirectional ranges, which will be significant for the development of 3D angle‐sensing devices.

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Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Omnidirectional Photodetectors Based on Spatial Resonance Asymmetric Facade via a 3D Self‐Standing Strategy

Pan

Zhang

et al. 2020

Advanced Materials

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“…Shiri et al investigated the photoinduced carrier dynamics of strained intrinsic SiNW FET with 1.7 nm diameter using Monte Carlo simulations. [216] Optically coupled two NWs act as resonators that scatter light and are able to determine the incident angle. Dhara et al studied circular photo galvanic effect (CPGE, the magnitude and polarity of photocurrent depend on the chirality of polarized optical excitation) of SiNW which does not occur in bulk Si.…”

Section: Optoelectronic Properties Of Sinw Photoconductorsmentioning

confidence: 99%

Hybrid Silicon Nanowire Devices and Their Functional Diversity

et al. 2019

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In the pool of nanostructured materials, silicon nanostructures are known as conventionally used building blocks of commercially available electronic devices. Their application areas span from miniaturized elements of devices and circuits to ultrasensitive biosensors for diagnostics. In this Review, the current trends in the developments of silicon nanowire‐based devices are summarized, and their functionalities, novel architectures, and applications are discussed from the point of view of analog electronics, arisen from the ability of (bio)chemical gating of the carrier channel. Hybrid nanowire‐based devices are introduced and described as systems decorated by, e.g., organic complexes (biomolecules, polymers, and organic films), aimed to substantially extend their functionality, compared to traditional systems. Their functional diversity is explored considering their architecture as well as areas of their applications, outlining several groups of devices that benefit from the coatings. The first group is the biosensors that are able to represent label‐free assays thanks to the attached biological receptors. The second group is represented by devices for optoelectronics that acquire higher optical sensitivity or efficiency due to the specific photosensitive decoration of the nanowires. Finally, the so‐called new bioinspired neuromorphic devices are shown, which are aimed to mimic the functions of the biological cells, e.g., neurons and synapses.

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“…Small creatures such as flies and lizards are known to possess the capability of accurately sensing the angle of an incident sound wave whose wavelength is much larger than their physical dimensions. Such an exotic characteristic in these small creatures has inspired miniature directional sensors both in optics and acoustics . The mechanisms behind the subwavelength directional sensing are explained with coupled resonances that amplify acoustic energy stored in each resonance.…”

Section: Introductionmentioning

confidence: 99%

Fano‐Like Acoustic Resonance for Subwavelength Directional Sensing: 0–360 Degree Measurement

Lee

Nomura

et al. 2020

Advanced Science

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Directional sound sensing plays a critical role in many applications involving the localization of a sound source. However, the sensing range limit and fabrication difficulties of current acoustic sensing technologies pose challenges in realizing compact subwavelength direction sensors. Here, a subwavelength directional sensor is demonstrated, which can detect the angle of an incident wave in a full angle range (0°∼360°). The directional sensing is realized with acoustic coupling of Helmholtz resonators each supporting a monopolar resonance, which are monitored by conventional microphones. When these resonators scatter sound into free‐space acoustic modes, the scattered waves from each resonator interfere, resulting in a Fano‐like resonance where the spectral responses of the constituent resonators are drastically different from each other. This work provides a critical understanding of resonant coupling as well as a viable solution for directional sensing.

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Subwavelength angle-sensing photodetectors inspired by directional hearing in small animals

Cited by 72 publications

References 24 publications

Omnidirectional Photodetectors Based on Spatial Resonance Asymmetric Facade via a 3D Self‐Standing Strategy

Omnidirectional Photodetectors Based on Spatial Resonance Asymmetric Facade via a 3D Self‐Standing Strategy

Hybrid Silicon Nanowire Devices and Their Functional Diversity

Fano‐Like Acoustic Resonance for Subwavelength Directional Sensing: 0–360 Degree Measurement

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