Communications engineering最新文献_第5页

A brain-inspired algorithm improves "cocktail party" listening for individuals with hearing loss. 一种受大脑启发的算法改善了听力损失患者的“鸡尾酒会”听力。

Communications engineering Pub Date : 2025-04-22 DOI: 10.1038/s44172-025-00414-5

Alexander D Boyd, Virginia Best, Kamal Sen

{"title":"A brain-inspired algorithm improves \"cocktail party\" listening for individuals with hearing loss.","authors":"Alexander D Boyd, Virginia Best, Kamal Sen","doi":"10.1038/s44172-025-00414-5","DOIUrl":"https://doi.org/10.1038/s44172-025-00414-5","url":null,"abstract":"Selective listening in competing-talker situations is an extraordinarily difficult task for many people. For individuals with hearing loss, this difficulty can be so extreme that it seriously impedes communication and participation in daily life. Directional filtering is one of few proven methods to improve speech understanding in competition, and most hearing devices now incorporate some kind of directional technology, although real-world benefits are modest, and many approaches fail in competing-talker situations. We recently developed a biologically inspired algorithm that is capable of very narrow spatial tuning and can isolate one talker from a mixture of talkers. The algorithm is based on a hierarchical network model of the auditory system, in which binaural sound inputs drive populations of neurons tuned to specific spatial locations and frequencies, and the spiking responses of neurons in the output layer are reconstructed into audible waveforms. Here we evaluated the algorithm in a group of adults with sensorineural hearing loss, using a challenging competing-talker task. The biologically inspired algorithm led to robust intelligibility gains under conditions in which a standard beamforming approach failed. The results provide compelling support for the potential benefits of biologically inspired algorithms for assisting individuals with hearing loss in \"cocktail party\" situations.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"75"},"PeriodicalIF":0.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12015318/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144024808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ATMO: an aerially transforming morphobot for dynamic ground-aerial transition. ATMO：用于动态地-空过渡的空中变换形态机器人。

Communications engineering Pub Date : 2025-04-19 DOI: 10.1038/s44172-025-00413-6

Ioannis Mandralis, Reza Nemovi, Alireza Ramezani, Richard M Murray, Morteza Gharib

{"title":"ATMO: an aerially transforming morphobot for dynamic ground-aerial transition.","authors":"Ioannis Mandralis, Reza Nemovi, Alireza Ramezani, Richard M Murray, Morteza Gharib","doi":"10.1038/s44172-025-00413-6","DOIUrl":"https://doi.org/10.1038/s44172-025-00413-6","url":null,"abstract":"Designing ground-aerial robots is challenging due to the increased actuation requirements which can lead to added weight and reduced locomotion efficiency. Morphobots mitigate this by combining actuators into multi-functional groups and leveraging ground transformation to achieve different locomotion modes. However, transforming on the ground requires dealing with the complexity of ground-vehicle interactions during morphing, limiting applicability on rough terrain. Mid-air transformation offers a solution to this issue but demands operating near or beyond actuator limits while managing complex aerodynamic forces. We address this problem by introducing the Aerially Transforming Morphobot (ATMO), a robot which transforms near the ground achieving smooth transition between aerial and ground modes. To achieve this, we leverage the near ground aerodynamics, uncovered by experimental load cell testing, and stabilize the system using a model-predictive controller that adapts to ground proximity and body shape. The system is validated through numerous experimental demonstrations. We find that ATMO can land smoothly at body postures past its actuator saturation limits by virtue of the uncovered ground-effect.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"74"},"PeriodicalIF":0.0,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12009325/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144022049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predicting compressive stress-strain behavior of elasto-plastic porous media via morphology-informed neural networks. 基于形态信息神经网络的弹塑性多孔介质压应力-应变行为预测。

Communications engineering Pub Date : 2025-04-18 DOI: 10.1038/s44172-025-00410-9

W Lindqwister, J Peloquin, L E Dalton, K Gall, M Veveakis

{"title":"Predicting compressive stress-strain behavior of elasto-plastic porous media via morphology-informed neural networks.","authors":"W Lindqwister, J Peloquin, L E Dalton, K Gall, M Veveakis","doi":"10.1038/s44172-025-00410-9","DOIUrl":"https://doi.org/10.1038/s44172-025-00410-9","url":null,"abstract":"Porous media, ranging from bones to concrete and from batteries to architected lattices, pose difficult challenges in fully harnessing for engineering applications due to their complex and variable structures. Accurate and rapid assessment of their mechanical behavior is both challenging and essential, and traditional methods such as destructive testing and finite element analysis can be costly, computationally demanding, and time consuming. Machine learning (ML) offers a promising alternative for predicting mechanical behavior by leveraging data-driven correlations. However, with such structural complexity and diverse morphology among porous media, the question becomes how to effectively characterize these materials to provide robust feature spaces for ML that are descriptive, succinct, and easily interpreted. Here, we developed an automated methodology to determine porous material strength. This method uses scalar morphological descriptors, known as Minkowski functionals, to describe the porous space. From there, we conduct uniaxial compression experiments for generating material stress-strain curves, and then train an ML model to predict the curves using said morphological descriptors. This framework seeks to expedite the analysis and prediction of stress-strain behavior in porous materials and lay the groundwork for future models that can predict mechanical behaviors beyond compression.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"73"},"PeriodicalIF":0.0,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12008209/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143998375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Author Correction: Human-structure and human-structure-human interaction in electro-quasistatic regime. 作者更正：准静电状态下的人-结构和人-结构-人的相互作用。

Communications engineering Pub Date : 2025-04-16 DOI: 10.1038/s44172-025-00406-5

Samyadip Sarkar, David Yang, Mayukh Nath, Arunashish Datta, Shovan Maity, Shreyas Sen

引用次数: 0

Reciprocal actuation core and modular robotic limbs for flying, swimming and running. 用于飞行、游泳和跑步的相互驱动核心和模块化机械四肢。

Communications engineering Pub Date : 2025-04-13 DOI: 10.1038/s44172-025-00404-7

Song Li, Fangyuan Liu, Xin Dong, Jinwu Xiang, Daochun Li, Pakpong Chirarattananon, Zhan Tu

{"title":"Reciprocal actuation core and modular robotic limbs for flying, swimming and running.","authors":"Song Li, Fangyuan Liu, Xin Dong, Jinwu Xiang, Daochun Li, Pakpong Chirarattananon, Zhan Tu","doi":"10.1038/s44172-025-00404-7","DOIUrl":"https://doi.org/10.1038/s44172-025-00404-7","url":null,"abstract":"Investigations into animal locomotion across diverse environments have highlighted the universal applicability of adjustable reciprocal motion, offering insights into simplifying actuation systems for multi-modal robots. However, achieving unified and efficient reciprocal motion with environmental adaptability in miniature robotic systems is challenging due to constraints of size, weight, and the need for controlled degree of freedom. Here, we present the UniCore, a miniature unified actuation platform capable of flying, swimming, and running with modular appendages. This platform features bio-inspired motor-spring resonance actuation systems, with a central controller that generates four adjustable reciprocal control signals based on a central pattern generator model. Performance validation demonstrates UniCore's proficiency in achieving three distinct modes of locomotion, underscoring the effectiveness of reciprocal motion for the locomotion of both animals and machines. All in all, this work demonstrates the potential of a unified reciprocal actuation platform to eliminate morphological and actuation redundancies commonly found in existing multi-modal robots, paving the way for more efficient and versatile miniature robotic systems.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"71"},"PeriodicalIF":0.0,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11994817/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144065379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A photonic crystal receiver for Rydberg atom-based sensing. 用于里德伯原子传感的光子晶体接收器。

Communications engineering Pub Date : 2025-04-09 DOI: 10.1038/s44172-025-00408-3

Hadi Amarloo, Mohammad Noaman, Su-Peng Yu, Donald Booth, Somayeh Mirzaee, Rajesh Pandiyan, Florian Christaller, James P Shaffer

{"title":"A photonic crystal receiver for Rydberg atom-based sensing.","authors":"Hadi Amarloo, Mohammad Noaman, Su-Peng Yu, Donald Booth, Somayeh Mirzaee, Rajesh Pandiyan, Florian Christaller, James P Shaffer","doi":"10.1038/s44172-025-00408-3","DOIUrl":"https://doi.org/10.1038/s44172-025-00408-3","url":null,"abstract":"Rydberg atom-based sensors use atoms dressed by lasers to detect and measure radio frequency electromagnetic fields. The absorptive properties of the atomic gas, configured as a Rydberg atom-based sensor, change in the presence of a radio frequency electromagnetic field. While these sensors are reasonably sensitive, the best conventional radio frequency sensors still outperform Rydberg atom-based sensors with respect to sensitivity. One approach to increase the sensitivity of Rydberg atom-based sensors is to engineer the vapor cell that contains the atomic gas. In this work, we introduce a passive, all-dielectric amplifier integrated into a Rydberg atom-based sensor vapor cell. The vapor cell is a combination of a slot waveguide and a photonic crystal. The structural features of the vapor cell yield a power amplification of ~24 dB. The radio frequency electromagnetic field is coupled adiabatically into the slot waveguide and slowed to increase the interaction between the radio frequency field and the atoms to effectively amplify the incoming signal, i.e., increase the Rabi frequency on the radio frequency transition. The work shows the utility of vapor cell engineering for atom-based quantum technologies and paves the way for other such devices.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"70"},"PeriodicalIF":0.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11982356/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144058404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetically actuatable 3D-printed endoscopic microsystems. 磁致动3d打印内窥镜微系统。

Communications engineering Pub Date : 2025-04-09 DOI: 10.1038/s44172-025-00403-8

Florian Rothermel, Andrea Toulouse, Simon Thiele, Chris Jung, Johannes Drozella, Robert Steinhoff, Harald Giessen, Alois M Herkommer

{"title":"Magnetically actuatable 3D-printed endoscopic microsystems.","authors":"Florian Rothermel, Andrea Toulouse, Simon Thiele, Chris Jung, Johannes Drozella, Robert Steinhoff, Harald Giessen, Alois M Herkommer","doi":"10.1038/s44172-025-00403-8","DOIUrl":"https://doi.org/10.1038/s44172-025-00403-8","url":null,"abstract":"In endoscopy, there is a crucial demand for compact system designs to allow for imaging in narrow spaces and reduce the risk of damage during endoscopic procedures. Enhanced functionality of lensed endoscopes can be realized by integrating actuatable imaging systems with flexible fiber bundles. Conventionally fabricated actuatable endoscopes are, however, limited in their miniaturization capability, typically resulting in system diameters greater than 1 mm. In this work, we present highly compact magnetically actuatable 3D-printed and endoscopically integrated microsystems that are fabricated on the end-facet of imaging fiber bundles using two-photon polymerization. Electromagnetic microcoils affixed to the fiber bundles are utilized to stimulate embedded polymer-magnets to achieve axial, lateral, or rotatory displacement of microoptical elements leading to zooming, resolution enhancement, and increased field of view capabilities. All demonstrated systems achieve overall system diameters well below 900 µm, marking a distinct advancement in the miniaturization of actuatable endoscopic devices. This work demonstrates the feasibility of integrating highly functional and compact optical systems within endoscopes, unlocking new potential for their application in diverse fields, for example in minimally invasive (\"keyhole\") surgery or intravascular imaging.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"69"},"PeriodicalIF":0.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11982310/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144054608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A method for reconstructing the dynamic displacement of floating structures based on acceleration measurements and comparison with data-reconstruction techniques. 基于加速度测量的浮动结构动态位移重构方法以及与数据重构技术的比较。

Communications engineering Pub Date : 2025-04-08 DOI: 10.1038/s44172-025-00402-9

Shujian Gao, Xi Chen, Zewen Pan, Zhe Tian, Fushun Liu

引用次数: 0

Colloidal-fibrillar composite gels demonstrate structural reinforcement, secondary fibrillar alignment, and improved vascular healing outcomes. 胶体-纤维复合凝胶显示结构增强，次级纤维排列，改善血管愈合结果。

Communications engineering Pub Date : 2025-04-08 DOI: 10.1038/s44172-025-00400-x

Nina A Moiseiwitsch, Sanika Pandit, Nicole Zwennes, Kimberly Nellenbach, Ana Sheridan, Jessica LeGrand, Eunice Chee, Sarah Ozawa, Brigid Troan, Wen Yih Aw, William Polacheck, Mansoor A Haider, Ashley C Brown

{"title":"Colloidal-fibrillar composite gels demonstrate structural reinforcement, secondary fibrillar alignment, and improved vascular healing outcomes.","authors":"Nina A Moiseiwitsch, Sanika Pandit, Nicole Zwennes, Kimberly Nellenbach, Ana Sheridan, Jessica LeGrand, Eunice Chee, Sarah Ozawa, Brigid Troan, Wen Yih Aw, William Polacheck, Mansoor A Haider, Ashley C Brown","doi":"10.1038/s44172-025-00400-x","DOIUrl":"10.1038/s44172-025-00400-x","url":null,"abstract":"Many biological tissues contain colloids within a fibrillar structure. Here, we develop and characterize colloidal-fibrillar scaffolds through examination of the effects of relative colloid and fiber ratios within a fibrin-based model system composed of fibrin-based nanoparticles (FBNs) within a natural fibrin scaffold. At lower concentrations, FBNs primarily integrate into the fibrillar fibrin matrix, strengthening it. At high concentrations, colloid-colloid interactions dominate and FBNs primarily form a highly aligned secondary structure that does not strengthen the fibrillar matrix. At intermediate concentrations, both reinforcement of the fibrin matrix and colloid-colloid interactions are observed. Our characterization of this colloidal-fibrillar system provides insight into new avenues for wound healing biomaterial development. Using structural and mechanical results, we developed a biomimetic surgical sealant. When applied to a vascular healing model, FBN gel resulted in improved vessel healing. This colloidal-fibrillar composite can greatly improve healing outcomes and should be applied to other tissues.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"67"},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11978784/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143813175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing photon capture: advancements in amorphous silicon-based microchannel plates. 优化光子捕获：非晶硅基微通道板的进展。

Communications engineering Pub Date : 2025-04-07 DOI: 10.1038/s44172-025-00394-6

Samira Frey, Luca Antognini, Jad Benserhir, Emanuele Ripiccini, Coenraad de Koning, Andreas Riedo, Mohamed Belhaj, Claudio Bruschini, Edoardo Charbon, Christophe Ballif, Nicolas Wyrsch

{"title":"Optimizing photon capture: advancements in amorphous silicon-based microchannel plates.","authors":"Samira Frey, Luca Antognini, Jad Benserhir, Emanuele Ripiccini, Coenraad de Koning, Andreas Riedo, Mohamed Belhaj, Claudio Bruschini, Edoardo Charbon, Christophe Ballif, Nicolas Wyrsch","doi":"10.1038/s44172-025-00394-6","DOIUrl":"10.1038/s44172-025-00394-6","url":null,"abstract":"Microchannel plates are electron multipliers widely used in applications such as particle detection, imaging, or mass spectrometry and are often paired with a photocathode to enable photon detection. Conventional microchannel plates, made of glass fibers, face limitations in manufacturing flexibility and integration with electronic readouts. Hydrogenated amorphous silicon-based microchannel plates offer a compelling alternative and provide unique advantages in these areas. Here, we report on the characterization of the time resolution of amorphous silicon-based microchannel plates. Using high photoelectron flux and an amplifier, we measured a time resolution of (4.6 ± 0.1) ps, while at lower fluxes, the arrival time uncertainty increased to (12.6 ± 0.2) ps. By minimizing the distance between the detector and a low-noise amplifier, we achieved a time resolution of (6.1 ± 0.2) ps even at low fluxes, demonstrating the exceptional timing capabilities of these detectors. Furthermore, we developed a new detector generation with funnel-shaped channel openings, increasing the active area to 95% and with simulated electron detection efficiency over 92%. Preliminary testing shows promising results, though challenges remain in single-particle detection. These findings highlight the potential of amorphous silicon-based microchannel plates for applications requiring high temporal resolution and detection efficiency.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"64"},"PeriodicalIF":0.0,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11976932/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143805034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0