Engineering

  • Perspective
    | Open Access

    Carbon dioxide (CO2) capture and conversion provide an alternative approach to synthesis of useful fuels and chemicals. Here, Ye et al. give a comprehensive perspective on the current state of the art and outlook of CO2 catalytic hydrogenation to the synthesis of light olefins, dimethyl ether, liquid fuels, and alcohols.

    • Run-Ping Ye
    • , Jie Ding
    • , Weibo Gong
    • , Morris D. Argyle
    • , Qin Zhong
    • , Yujun Wang
    • , Christopher K. Russell
    • , Zhenghe Xu
    • , Armistead G. Russell
    • , Qiaohong Li
    • , Maohong Fan
    •  & Yuan-Gen Yao
  • Article
    | Open Access

    In Suzuki coupling reactions, excellent catalytic performance require negatively charged Pd species and the avoidance of metal leaching or clustering. Here the authors implanted Pd sites into an intermetallic electride, Y3Pd2, which serves as an efficient and stable catalyst for Suzuki coupling reactions.

    • Tian-Nan Ye
    • , Yangfan Lu
    • , Zewen Xiao
    • , Jiang Li
    • , Takuya Nakao
    • , Hitoshi Abe
    • , Yasuhiro Niwa
    • , Masaaki Kitano
    • , Tomofumi Tada
    •  & Hideo Hosono
  • Article
    | Open Access

    Performing intravital imaging of the colon in mouse models is challenging due to the colon’s anatomic location and motility. Here, the authors develop a murine colonic window for intravital chronic imaging that maximises long-term animal survival and minimises motion artefacts.

    • Nikolai Rakhilin
    • , Aliesha Garrett
    • , Chi-Yong Eom
    • , Katherine Ramos Chavez
    • , David M. Small
    • , Andrea R. Daniel
    • , Melanie M. Kaelberer
    • , Menansili A. Mejooli
    • , Qiang Huang
    • , Shengli Ding
    • , David G. Kirsch
    • , Diego V. Bohórquez
    • , Nozomi Nishimura
    • , Bradley B. Barth
    •  & Xiling Shen
  • Article
    | Open Access

    Flexible thermoelectric composite threads are reported for wearable thermal energy harvesting platforms where rigid materials lack compatibility. Thermoelectric thread modules are demonstrated, and pressure-dependence shows thread compression to be essential for improving electrical conductivity.

    • J. Peng
    • , I. Witting
    • , N. Geisendorfer
    • , M. Wang
    • , M. Chang
    • , A. Jakus
    • , C. Kenel
    • , X. Yan
    • , R. Shah
    • , G. J. Snyder
    •  & M. Grayson
  • Article
    | Open Access

    So far, mostly 2D building blocks have been used to make origami-type multistable metamaterials that can keep their shape when deformed. Here, the authors introduce a local actuation strategy to explore the energy landscape of multistable metamaterials fabricated from 3D prismatic building blocks.

    • Agustin Iniguez-Rabago
    • , Yun Li
    •  & Johannes T. B. Overvelde
  • Article
    | Open Access

    Nanotechnology can bring significant advancements to hemostatic patches. Here, the authors design a superhydrophobic hemostatic surface with immobilized carbon nanofibers that can stop bleeding instantaneously upon application, seal the wound subsequently by promoting quick fibrin formation, and facilitate unforced and facile patch removal without tearing the wound.

    • Zhe Li
    • , Athanasios Milionis
    • , Yu Zheng
    • , Marcus Yee
    • , Lukas Codispoti
    • , Freddie Tan
    • , Dimos Poulikakos
    •  & Choon Hwai Yap
  • Article
    | Open Access

    Wearables capable of collecting and analyzing sweat are of interest for athletics and health monitoring. Here, the authors report a resettable microfluidic platform comprising soft pumps and valves that provides triggered release of chemesthetic agents to alert the user of excessive sweat loss.

    • Jonathan T. Reeder
    • , Yeguang Xue
    • , Daniel Franklin
    • , Yujun Deng
    • , Jungil Choi
    • , Olivia Prado
    • , Robin Kim
    • , Claire Liu
    • , Justin Hanson
    • , John Ciraldo
    • , Amay J. Bandodkar
    • , Siddharth Krishnan
    • , Alexandra Johnson
    • , Emily Patnaude
    • , Raudel Avila
    • , Yonggang Huang
    •  & John A. Rogers
  • Article
    | Open Access

    Chemical looping methane partial oxidation is an effective technology to produce syngas with a minimal energy penalty. Here, the authors design and develop a mesoporous silica supported nanoparticle oxygen carrier that enables a near 100% CO generation with high recyclability and substantially lower operating temperature.

    • Yan Liu
    • , Lang Qin
    • , Zhuo Cheng
    • , Josh W. Goetze
    • , Fanhe Kong
    • , Jonathan A. Fan
    •  & Liang-Shih Fan
  • Article
    | Open Access

    Designing efficient and scalable specialized neuromorphic circuits to integrate raw nervous stimuli and respond identically to biological neurons remains a challenge. Here, the authors propose an analog programming strategy to emulate biological neurons in silico.

    • Kamal Abu-Hassan
    • , Joseph D. Taylor
    • , Paul G. Morris
    • , Elisa Donati
    • , Zuner A. Bortolotto
    • , Giacomo Indiveri
    • , Julian F. R. Paton
    •  & Alain Nogaret
  • Article
    | Open Access

    Synthetic labs rely on a vast number of chemicals, which are often unstable with time and affected by price fluctuations. Here, the authors report ad hoc developed cartridge reactionware for the synthesis of four different targets in a time- and cost-saving manner.

    • Sergey S. Zalesskiy
    • , Philip J. Kitson
    • , Przemyslaw Frei
    • , Andrius Bubliauskas
    •  & Leroy Cronin
  • Article
    | Open Access

    The authors here look into the phase transitions in Li-/Mn-rich layered cathode materials during synthesis and cycling. It is revealed that the Li-rich layered structure tends to transform to a Li-poor spinel phase via an intermediate Li-containing rock salt phase, with release of lithium/oxygen.

    • Weibo Hua
    • , Suning Wang
    • , Michael Knapp
    • , Steven J. Leake
    • , Anatoliy Senyshyn
    • , Carsten Richter
    • , Murat Yavuz
    • , Joachim R. Binder
    • , Clare P. Grey
    • , Helmut Ehrenberg
    • , Sylvio Indris
    •  & Björn Schwarz
  • Article
    | Open Access

    Cellular overgrowth and fibrosis in the foreign body response can compromise the function of transplanted cells. Here, the authors report on the zwitterionically modified alginates for the encapsulation of cells to reduce cellular overgrowth and demonstrate application in mice, dogs and pigs.

    • Qingsheng Liu
    • , Alan Chiu
    • , Long-Hai Wang
    • , Duo An
    • , Monica Zhong
    • , Alexandra M. Smink
    • , Bart J. de Haan
    • , Paul de Vos
    • , Kevin Keane
    • , Andreas Vegge
    • , Esther Y. Chen
    • , Wei Song
    • , Wendy F. Liu
    • , James Flanders
    • , Claude Rescan
    • , Lars Groth Grunnet
    • , Xi Wang
    •  & Minglin Ma
  • Article
    | Open Access

    Designing efficient, scalable and low-thermal-budget 2D Materials for 3D integration remains a challenge. Here, the authors report the development of a hybrid-(solution-processed-exfoliated) integration of 2D Material based 1T1R which uses a multilayer WSe2 p-FET and a multilayer printed WSe2 RRAM.

    • Maheswari Sivan
    • , Yida Li
    • , Hasita Veluri
    • , Yunshan Zhao
    • , Baoshan Tang
    • , Xinghua Wang
    • , Evgeny Zamburg
    • , Jin Feng Leong
    • , Jessie Xuhua Niu
    • , Umesh Chand
    •  & Aaron Voon-Yew Thean
  • Article
    | Open Access

    Coupling of carbon dioxide reduction and organic oxidation is promising for sustainable chemicals production; however, economics are impacted by variations in product combinations and process design. Here the authors report technoeconomic analysis for a range of technologies and coproduction processes.

    • Jonggeol Na
    • , Bora Seo
    • , Jeongnam Kim
    • , Chan Woo Lee
    • , Hyunjoo Lee
    • , Yun Jeong Hwang
    • , Byoung Koun Min
    • , Dong Ki Lee
    • , Hyung-Suk Oh
    •  & Ung Lee
  • Article
    | Open Access

    Particle manipulation inside a fibre is challenging yet meaningful to achieve for fibre devices. Here, the authors demonstrate a method to manipulate in-fibre particles via laser induced thermocapillary convection, enabling the formation of semiconductor junctions directly in a fibre.

    • Jing Zhang
    • , Zhe Wang
    • , Zhixun Wang
    • , Ting Zhang
    •  & Lei Wei
  • Article
    | Open Access

    Methods for dilation are currently limited to specific shapes and curvatures, with the potential for some of the structure's shape to encroach onto the final dilated volume. Here, the authors develop a method for creating dilational structures from arbitrary surfaces that avoids volume encroachment.

    • Freek G. J. Broeren
    • , Werner W. P. J. van de Sande
    • , Volkert van der Wijk
    •  & Just L. Herder
  • Article
    | Open Access

    Realizing stable, room-temperature magnetic skyrmions that can be moved along current is challenging. Here, the authors observe skyrmion bubbles in a synthetic antiferromagnetic coupled multilayer at room temperature and demonstrate its current-induced motion free from the skyrmion Hall effect.

    • Takaaki Dohi
    • , Samik DuttaGupta
    • , Shunsuke Fukami
    •  & Hideo Ohno
  • Article
    | Open Access

    Providing efficient and scalable specialized hardware for stochastic neural networks remains a challenge. Here, the authors propose a fast, energy-efficient and scalable stochastic dot-product circuit that may use either of two types of memory devices – metal-oxide memristors and floating-gate memories.

    • M. R. Mahmoodi
    • , M. Prezioso
    •  & D. B. Strukov
  • Article
    | Open Access

    Thin films of several microns in thickness are ubiquitously used in packaging, electronics, and acoustic sensors. Here the authors demonstrate an ultrathin wood film with an aligned and laminal structure and acoustic properties which allows application of the film as diaphragm for an audio speaker.

    • Wentao Gan
    • , Chaoji Chen
    • , Hyun-Tae Kim
    • , Zhiwei Lin
    • , Jiaqi Dai
    • , Zhihua Dong
    • , Zhan Zhou
    • , Weiwei Ping
    • , Shuaiming He
    • , Shaoliang Xiao
    • , Miao Yu
    •  & Liangbing Hu
  • Article
    | Open Access

    Though designing digital circuits using organic electrochemical transistors (OECTs) is promising due to their high performance, inherent large footprint limits adoption. Here, the authors report staggered top-gate OECTs for all-printed integrated circuits with fast switching and small footprint.

    • Peter Andersson Ersman
    • , Roman Lassnig
    • , Jan Strandberg
    • , Deyu Tu
    • , Vahid Keshmiri
    • , Robert Forchheimer
    • , Simone Fabiano
    • , Göran Gustafsson
    •  & Magnus Berggren
  • Article
    | Open Access

    Rolling microstructures have great potential among optics and micromechanics but on-demand construction with versatile materials remains challenging. Here Xu et al. precisely construct 3D rolling microstructures by liquid-triggered delamination in predictable manner and demonstrate their applications.

    • Borui Xu
    • , Xinyuan Zhang
    • , Ziao Tian
    • , Di Han
    • , Xingce Fan
    • , Yimeng Chen
    • , Zengfeng Di
    • , Teng Qiu
    •  & Yongfeng Mei
  • Article
    | Open Access

    The use of single-photon data has been limited by time-consuming reconstruction algorithms. Here, the authors combine statistical models and computational tools known from computer graphics and show real-time reconstruction of moving scenes.

    • Julián Tachella
    • , Yoann Altmann
    • , Nicolas Mellado
    • , Aongus McCarthy
    • , Rachael Tobin
    • , Gerald S. Buller
    • , Jean-Yves Tourneret
    •  & Stephen McLaughlin
  • Article
    | Open Access

    Micro- and nanomechanical resonators play a crucial role in sensing applications. Here, the authors demonstrate electrically tunable modal coupling in capacitive microelectromechanical gyroscopic ring resonators that allows for improving the performance micro/nano-sensors relying on precise control of the degree of modal coupling.

    • Xin Zhou
    • , Chun Zhao
    • , Dingbang Xiao
    • , Jiangkun Sun
    • , Guillermo Sobreviela
    • , Dustin D. Gerrard
    • , Yunhan Chen
    • , Ian Flader
    • , Thomas W. Kenny
    • , Xuezhong Wu
    •  & Ashwin A. Seshia
  • Article
    | Open Access

    To realize multilayer stretchable printed circuit boards (SPCBs), advancements in industrially-viable materials and processing methods are required. Here, the authors report multilayer SPCBs with electrical wiring capable of interconnecting isolated devices in different layers within an elastomeric matrix.

    • Shantonu Biswas
    • , Andreas Schoeberl
    • , Yufei Hao
    • , Johannes Reiprich
    • , Thomas Stauden
    • , Joerg Pezoldt
    •  & Heiko O. Jacobs
  • Article
    | Open Access

    Elastic mapping of individual layers of the cornea with elastography uses Lamb waves, which are dependent on the thickness of each layer and the direction of propagation. Here the authors present Reverberant 3D Optical Coherence Elastography to measure elasticity of single layers using waves propagating in all directions.

    • Fernando Zvietcovich
    • , Pornthep Pongchalee
    • , Panomsak Meemon
    • , Jannick P. Rolland
    •  & Kevin J. Parker
  • Article
    | Open Access

    Graphene-base transistors were originally proposed for high-frequency applications, but the height of the emitter potential barrier limits the transistor performance towards the THz range. Here, the authors fabricate a vertical silicon-graphene-germanium transistor with a Schottky emitter enabling a transition from MHz to GHz operation.

    • Chi Liu
    • , Wei Ma
    • , Maolin Chen
    • , Wencai Ren
    •  & Dongming Sun
  • Article
    | Open Access

    Natural creatures, from fish to snake and birds, combine neural control, sensory feedback and compliant mechanics to operate across uncertain environments. Here the authors present a versatile modeling approach to the dynamic simulation of their architectures based on the assembly of Cosserat rods.

    • Xiaotian Zhang
    • , Fan Kiat Chan
    • , Tejaswin Parthasarathy
    •  & Mattia Gazzola
  • Article
    | Open Access

    Large scale culture of adherent cells would benefit from a platform for continuous monitoring and control of cell growth and culture conditions. Here the authors develop an integrated, smart cell culture platform where cells are grown on multiple layers of thin sensors that can be wirelessly integrated across several incubators.

    • Kyoung Won Cho
    • , Seok Joo Kim
    • , Jaemin Kim
    • , Seuk Young Song
    • , Wang Hee Lee
    • , Liu Wang
    • , Min Soh
    • , Nanshu Lu
    • , Taeghwan Hyeon
    • , Byung-Soo Kim
    •  & Dae-Hyeong Kim
  • Article
    | Open Access

    The plant-by-plant retirement needs are not well-understood yet to achieve the rapid transition away from coal use. Here the authors found that operational lifetimes of existing units must be reduced to approximately 35 years to keep warming well below 2 °C or 20 years for 1.5 °C, even if no new capacity comes online.

    • Ryna Yiyun Cui
    • , Nathan Hultman
    • , Morgan R. Edwards
    • , Linlang He
    • , Arijit Sen
    • , Kavita Surana
    • , Haewon McJeon
    • , Gokul Iyer
    • , Pralit Patel
    • , Sha Yu
    • , Ted Nace
    •  & Christine Shearer
  • Article
    | Open Access

    Monkeys were trained to use an artificial cortico-muscular connection (ACMC) to regain control over a paralyzed hand following subcortical stroke. Control over the paralyzed hand was accompanied by the appearance of localized high-gamma modulation in the cortex, which could be rapidly reset and relocalized to a different cortical site to reactivate motor control.

    • Kenji Kato
    • , Masahiro Sawada
    •  & Yukio Nishimura
  • Article
    | Open Access

    Extracellular matrix (ECM) is an ideal scaffold for tissue engineering but tends to lack hierarchical structure. Here the authors implant sacrificial templates subcutaneously to build an organised ECM scaffold, and following template removal and decellularisation use these scaffolds to create functionally integrated muscle, nerve and artery in vivo.

    • Meifeng Zhu
    • , Wen Li
    • , Xianhao Dong
    • , Xingyu Yuan
    • , Adam C. Midgley
    • , Hong Chang
    • , Yuhao Wang
    • , Haoyu Wang
    • , Kai Wang
    • , Peter X. Ma
    • , Hongjun Wang
    •  & Deling Kong
  • Article
    | Open Access

    Here, the authors demonstrate a robotic metamaterial implemented through a combination of actuators, sensors and local controllers. They show that this active metamaterial can exhibit tunable linear non-reciprocal dynamic characteristics, with a very large and broadband non-reciprocal gain.

    • Martin Brandenbourger
    • , Xander Locsin
    • , Edan Lerner
    •  & Corentin Coulais
  • Article
    | Open Access

    Here, the authors show the capability of a hybrid platform merging surface acoustic waves and coupled mechanical resonators, allowing in a reciprocal manner to coherently control the resonator motion and manipulate surface-acoustic-wave propagation at a sub-wavelength scale.

    • Laetitia Raguin
    • , Olivier Gaiffe
    • , Roland Salut
    • , Jean-Marc Cote
    • , Valérie Soumann
    • , Vincent Laude
    • , Abdelkrim Khelif
    •  & Sarah Benchabane
  • Article
    | Open Access

    Here, the authors study the influence of tacticity on the dynamic behaviour of chiral structured periodic media comprising rotational inertia elements. This opens the way towards new mechanisms for wave control by exploiting spin-spin coupling mechanism.

    • A. Bergamini
    • , M. Miniaci
    • , T. Delpero
    • , D. Tallarico
    • , B. Van Damme
    • , G. Hannema
    • , I. Leibacher
    •  & A. Zemp
  • Article
    | Open Access

    The brain extracellular matrix (ECM) is altered in brain tumors, but its role in cancer progression and drug sensitivity are difficult to study. Here the authors develop a 3D bioengineered brain tissue model using patient-derived samples and tunable brain-derived ECM to examine the interplay between cells and the ECM.

    • Disha Sood
    • , Min Tang-Schomer
    • , Dimitra Pouli
    • , Craig Mizzoni
    • , Nicole Raia
    • , Albert Tai
    • , Knarik Arkun
    • , Julian Wu
    • , Lauren D. Black III
    • , Bjorn Scheffler
    • , Irene Georgakoudi
    • , Dennis A. Steindler
    •  & David L. Kaplan
  • Article
    | Open Access

    Here, the authors apply transition metal doping in combination with phototermal therapy to treat Staphylococcus aureus-infected wounds, and show that release of ions by local heat enhances bacteria clearance and promotes tissue repair in a rat model of MRSA-infected wounds

    • Jun Li
    • , Xiangmei Liu
    • , Lei Tan
    • , Zhenduo Cui
    • , Xianjin Yang
    • , Yanqin Liang
    • , Zhaoyang Li
    • , Shengli Zhu
    • , Yufeng Zheng
    • , Kelvin Wai Kwok Yeung
    • , Xianbao Wang
    •  & Shuilin Wu
  • Article
    | Open Access

    Designing efficient integrated cooling solutions by controlling heat management in nanodevices remains a challenge. Here, the authors propose evaporative electron cooling in the AlGaAs/GaAs double barrier heterostructures quantum well achieving up to 50 K electron temperature reduction at 300 K.

    • Aymen Yangui
    • , Marc Bescond
    • , Tifei Yan
    • , Naomi Nagai
    •  & Kazuhiko Hirakawa
  • Article
    | Open Access

    Realizing phototransistors based on hybrid perovskite heterostructures with tuneable photodetection remains a challenge. Here, the authors integrate metal-halide perovskites into organic semiconductors to design hybrid heterojunction phototransistors with state-of-the-art performance.

    • Yen-Hung Lin
    • , Wentao Huang
    • , Pichaya Pattanasattayavong
    • , Jongchul Lim
    • , Ruipeng Li
    • , Nobuya Sakai
    • , Julianna Panidi
    • , Min Ji Hong
    • , Chun Ma
    • , Nini Wei
    • , Nimer Wehbe
    • , Zhuping Fei
    • , Martin Heeney
    • , John G. Labram
    • , Thomas D. Anthopoulos
    •  & Henry J. Snaith
  • Article
    | Open Access

    The vanadium redox flow battery is promising for commercial applications, but is hampered by high-cost electrolytes that are typically prepared via electrolysis. Here the authors demonstrate cost-effective chemical production of a high-quality vanadium electrolyte using platinum nanoparticles as a catalyst.

    • Jiyun Heo
    • , Jae-Yun Han
    • , Soohyun Kim
    • , Seongmin Yuk
    • , Chanyong Choi
    • , Riyul Kim
    • , Ju-Hyuk Lee
    • , Andy Klassen
    • , Shin-Kun Ryi
    •  & Hee-Tak Kim
  • Article
    | Open Access

    To realize electronic skins for emerging technologies that require multifunctional sensing capability, intelligent design strategies are needed. Here, the authors report electronic skins with a single sensory unit that simultaneously transduces both tactile and touchless stimulations.

    • Jin Ge
    • , Xu Wang
    • , Michael Drack
    • , Oleksii Volkov
    • , Mo Liang
    • , Gilbert Santiago Cañón Bermúdez
    • , Rico Illing
    • , Changan Wang
    • , Shengqiang Zhou
    • , Jürgen Fassbender
    • , Martin Kaltenbrunner
    •  & Denys Makarov
  • Article
    | Open Access

    Full utilization of ZSM-5 shape-selectivity is restricted by crystal external surface acid sites and co-existence of two different sized channels. Here, the authors synthesize reverse Al zoned ZSM-5 with sinusoidal channel preferentially opened to its inert external surface to achieve 99.3% p-xylene selectivity.

    • Chuanfu Wang
    • , Lei Zhang
    • , Xin Huang
    • , Yufei Zhu
    • , Gang (Kevin) Li
    • , Qinfen Gu
    • , Jingyun Chen
    • , Linge Ma
    • , Xiujie Li
    • , Qihua He
    • , Junbo Xu
    • , Qi Sun
    • , Chuqiao Song
    • , Mi Peng
    • , Junliang Sun
    •  & Ding Ma
  • Article
    | Open Access

    Phonon engineering enables tailored heat-transfer properties, controlled elastic and acoustic vibration propagation, and custom phonon-electron and phonon-photon interactions. Here, the authors present an approach for the observation and tunability of vibrational modes of nanocrystal superlattices.

    • Nuri Yazdani
    • , Maximilian Jansen
    • , Deniz Bozyigit
    • , Weyde M. M. Lin
    • , Sebastian Volk
    • , Olesya Yarema
    • , Maksym Yarema
    • , Fanni Juranyi
    • , Sebastian D. Huber
    •  & Vanessa Wood
  • Article
    | Open Access

    Migrating cells tune their energy utilization in response to their microenvironment, but how cellular energetics direct navigation remains unclear. Here, the authors report that energetic costs for motility, regulated by cell mechanics and confinement, predict the probability of migration choice.

    • Matthew R. Zanotelli
    • , Aniqua Rahman-Zaman
    • , Jacob A. VanderBurgh
    • , Paul V. Taufalele
    • , Aadhar Jain
    • , David Erickson
    • , Francois Bordeleau
    •  & Cynthia A. Reinhart-King
  • Article
    | Open Access

    Continuous low-level supply or in situ generation of hydrogen peroxide (H2O2) is essential for the stability of unspecific peroxygenases. Here, the authors demonstrate that AuPd / TiO2 can generate sufficient H2O2 for the engineered unspecific heme-thiolate peroxygenase PaDa-I to oxidise a range of C-H bonds.

    • Simon J. Freakley
    • , Svenja Kochius
    • , Jacqueline van Marwijk
    • , Caryn Fenner
    • , Richard J. Lewis
    • , Kai Baldenius
    • , Sarel S. Marais
    • , Diederik J. Opperman
    • , Susan T. L. Harrison
    • , Miguel Alcalde
    • , Martha S. Smit
    •  & Graham J. Hutchings
  • Article
    | Open Access

    Designing bio-inspired computational features in soft systems without centralized processing remains challenging. Here, the authors propose a passive display based on thermochromic elastomers by leveraging Joule heating of embedded liquid metal wires by changing geometry in response to deformation.

    • Yang Jin
    • , Yiliang Lin
    • , Abolfazl Kiani
    • , Ishan D. Joshipura
    • , Mingqiao Ge
    •  & Michael D. Dickey
  • Article
    | Open Access

    Designing reliable and sensitive mechanical sensing technologies based on piezoresistive effect remains a challenge. Here, the authors propose an opto-electro-mechanical coupling strategy to enable giant piezoresistive effect in a highly doped 3C-SiC/Si heterojunction achieving a high GF of 58,000.

    • Thanh Nguyen
    • , Toan Dinh
    • , Abu Riduan Md Foisal
    • , Hoang-Phuong Phan
    • , Tuan-Khoa Nguyen
    • , Nam-Trung Nguyen
    •  & Dzung Viet Dao
  • Article
    | Open Access

    Here, the authors demonstrate substrate-integrated photonic doping, enabling the implementation of near-zero-index media within a printed circuit board integrated design. They illustrate the potential by designing and numerically demonstrating a dielectric sensor, an acousto-microwave modulator and a flexible transmission line.

    • Ziheng Zhou
    • , Yue Li
    • , Hao Li
    • , Wangyu Sun
    • , Iñigo Liberal
    •  & Nader Engheta
  • Article
    | Open Access

    Crystalline M1 phase of Mo-V-Te-Nb mixed oxide is an excellent catalyst for ethane oxidative dehydrogenation to ethene. Here, the authors show a method that synthesizes highly active materials by generating M1 crystals with corrugated terminations, thus exposing a large concentration of active sites.

    • Daniel Melzer
    • , Gerhard Mestl
    • , Klaus Wanninger
    • , Yuanyuan Zhu
    • , Nigel D. Browning
    • , Maricruz Sanchez-Sanchez
    •  & Johannes A. Lercher