A5066196159- Advanced Sensor and Energy Harvesting Materials
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Neuroscience and Neural Engineering
- Nanowire Synthesis and Applications
- Graphene research and applications
- Tactile and Sensory Interactions
- Modular Robots and Swarm Intelligence
- Additive Manufacturing and 3D Printing Technologies
- 2D Materials and Applications
- Copper-based nanomaterials and applications
- Quantum Dots Synthesis And Properties
- Silicon and Solar Cell Technologies
- Organic Light-Emitting Diodes Research
- Non-Invasive Vital Sign Monitoring
- Graphene and Nanomaterials Applications
- Advancements in Transdermal Drug Delivery
- 3D Printing in Biomedical Research
- Dermatology and Skin Diseases
- MXene and MAX Phase Materials
- Semiconductor materials and interfaces
- COVID-19 diagnosis using AI
- Advanced Materials and Mechanics
- Bone Tissue Engineering Materials
- Perovskite Materials and Applications
Wearifi (United States)
2020-2025
Northwestern University
2018-2025
National Taiwan University
2013-2020
University of Illinois Urbana-Champaign
2017-2019
California Institute of Technology
2016
We realized photovoltaic operation in large-scale MoS2 monolayers by the formation of a type-II heterojunction with p-Si. The monolayer introduces built-in electric field near interface between and p-Si to help photogenerated carrier separation. Such device achieves power conversion efficiency 5.23%, which is highest among all transition-metal dichalcogenide-based solar cells. demonstrated results MoS2/Si-based cells hold promise for integration 2D materials commercially available Si-based...
Monolayer molybdenum disulfide (MoS2) has become a promising building block in optoelectronics for its high photosensitivity. However, sulfur vacancies and other defects significantly affect the electrical optoelectronic properties of monolayer MoS2 devices. Here, highly crystalline diselenide (MoSe2) monolayers have been successfully synthesized by chemical vapor deposition (CVD) method. Low-temperature photoluminescence comparison MoSe2 reveals that shows much weaker bound exciton peak;...
The production of renewable solar fuel through CO2 photoreduction, namely artificial photosynthesis, has gained tremendous attention in recent times due to the limited availability fossil-fuel resources and global climate change caused by rising anthropogenic atmosphere. In this study, graphene oxide (GO) decorated with copper nanoparticles (Cu-NPs), hereafter referred as Cu/GO, been used enhance photocatalytic reduction under visible-light. A rapid one-pot microwave process was prepare...
Interface carrier recombination currently hinders the performance of hybrid organic-silicon heterojunction solar cells for high-efficiency low-cost photovoltaics. Here, we introduce an intermediate 1,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC) layer into based on silicon nanowires (SiNWs) and conjugate polymer poly(3,4-ethylenedioxy-thiophene):poly(styrenesulfonate) (PEDOT:PSS). The highest power conversion efficiency reaches a record 13.01%, which is largely ascribed to modified...
We demonstrate a polymer-free method that can routinely transfer relatively large-area graphene to any substrate with advanced electrical properties and superior atomic chemical structures as compared the sheets transferred conventional polymer-assisted methods. The films are show high conductance excellent optical transmittance. Raman spectroscopy X-ray/ultraviolet photoelectron also confirm presence of quality little contamination after transfer. Atom-resolved images be obtained using...
Abstract Photodegradation of organic pollutants in aqueous solution is a promising method for environmental purification. Photocatalysts capable promoting this reaction are often composed noble metal nanoparticles deposited on semiconductor. Unfortunately, the separation these semiconductor‐metal nanopowders from treated water very difficult and energy consumptive, so their usefulness practical applications limited. Here, precisely controlled synthesis large‐scale highly efficient...
Significance Bioresorbable electronic systems have the potential to create important new categories of technologies, ranging from temporary biomedical implants environmentally benign, green consumer devices. The results presented here provide a collection ideas that establish foundations for realistic technology this type, in which state-of-the-art silicon complementary metal-oxide-semiconductor foundries serve as source microscale, water-soluble components configured rapid assembly and...
Abstract Biodegradable electronic systems represent an emerging class of technology with unique application possibilities, from temporary biomedical implants to “green” consumer gadgets. This paper introduces materials and processing methods for 3D, heterogeneously integrated devices this type, various functional examples in sophisticated forms silicon‐based electronics. Specifically, techniques performing multilayer assembly by transfer printing fabricating layer‐to‐layer vias interconnects...
Soft, skin-integrated electronic sensors can provide continuous measurements of diverse physiological parameters, with broad relevance to the future human health care. Motion artifacts can, however, corrupt recorded signals, particularly those associated mechanical signatures cardiopulmonary processes. Design strategies introduced here address this limitation through differential operation a matched, time-synchronized pair high-bandwidth accelerometers located on parts anatomy that exhibit...
Flexible biocompatible electronic systems that leverage key materials and manufacturing techniques associated with the consumer electronics industry have potential for broad applications in biomedicine biological research. This study reports scalable approaches to technologies of this type, where thin microscale device components integrate onto flexible polymer substrates interconnected arrays provide multimodal, high performance operational capabilities as intimately coupled biointerfaces....
Capabilities in continuous monitoring of key physiological parameters disease have never been more important than the context global COVID-19 pandemic. Soft, skin-mounted electronics that incorporate high-bandwidth, miniaturized motion sensors enable digital, wireless measurements mechanoacoustic (MA) signatures both core vital signs (heart rate, respiratory and temperature) underexplored biomarkers (coughing count) with high fidelity immunity to ambient noises. This paper summarizes an...
Microfluidic technologies have wide-ranging applications in chemical analysis systems, drug delivery platforms, and artificial vascular networks. This latter area is particularly relevant to 3D cell cultures, engineered tissues, organs, where volumetric capabilities fluid distribution are essential. Existing schemes for fabricating microfluidic structures constrained realizing desired layout designs, producing physiologically microvascular structures, and/or integrating active...
Abstract Physically transient forms of electronics enable unique classes technologies, ranging from biomedical implants that disappear through processes bioresorption after serving a clinical need to internet-of-things devices harmlessly dissolve into the environment following relevant period use. Here, we develop sustainable manufacturing pathway, based on ultrafast pulsed laser ablation, can support high-volume, cost-effective manipulation diverse collection organic and inorganic...
Sensations of heat and touch produced by receptors in the skin are essential importance for perceptions physical environment, with a particularly powerful role interpersonal interactions. Advances technologies replicating these sensations programmable manner have potential not only to enhance virtual/augmented reality environments but they also hold promise medical applications individuals amputations or impaired sensory function. Engineering challenges achieving interfaces precise spatial...
Biomedical implants that incorporate active electronics and offer the ability to operate in a safe, stable fashion for long periods of time must defect-free layers as barriers biofluid penetration. This paper reports an engineered material approach this challenge combines ultrathin, physically transferred films silicon dioxide (t-SiO2) thermally grown on wafers, with hafnium oxide (HfO2) formed by atomic layer deposition coatings parylene (Parylene C) created chemical vapor deposition,...
Abstract Natural systems display sophisticated control of light-matter interactions at multiple length scales for light harvesting, manipulation, and management, through elaborate photonic architectures responsive material formats. Here, we combine programmable function with elastomeric composites to generate optomechanical actuators that controllable tunable actuation as well complex deformation in response simple illumination. The ability topographically bandgaps allows the substrate...
Transient forms of electronics, systems that disintegrate, dissolve, resorb, or sublime in a controlled manner after well-defined operating lifetime, are interest for applications hardware secure technologies, temporary biomedical implants, "green" consumer devices and other areas cannot be addressed with conventional approaches. Broad sets materials now exist range transient electronic components, including transistors, diodes, antennas, sensors, even batteries. This work reports the first...
Significance Wireless electronics for monitoring of skin hydration in a quantitative fashion have broad relevance to our understanding dermatological health and structure both clinical home settings. Here, we present miniaturized, long-range automated system that adheres gently the yield recordings water content epidermis dermis. This supports capabilities characterizing barrier, assessing severity diseases, evaluating cosmetic medication efficacy, with high levels repeatability...
Accurate measurements of skin hydration are great interest to dermatological science and clinical practice. This parameter serves as a relevant surrogate barrier function, key representative benchmark for overall health. The sensor (SHS) is soft, skin-interfaced wireless system that exploits thermal measurement method, an alternative conventional impedance-based hand-held probes. study presents multiple strategies maximizing the sensitivity reliability this previously reported SHS platform....
Recently developed approaches in deterministic assembly allow for controlled, geometric transformation of two-dimensional structures into complex, engineered three-dimensional layouts. Attractive features include applicability to wide ranging layout designs and dimensions along with the capacity integrate planar thin film materials device The work reported here establishes further capabilities directly embedding high-performance electronic devices resultant 3D constructs based on silicon...