Results 121 to 130 of about 407,209 (362)

Surfactant Assemblies Directing Chemical Transfer Cascades in Convective Marangoni Flow Pumps

open access: yesAdvanced Materials Interfaces, EarlyView.
Convective Marangoni flow pumps allow for chemical transfer cascades amongst droplets that are positioned at the air/water interface. The system comprises of myelins progressing along surface tension gradients, delivering amphiphiles at oil droplets and thereby triggering the emission of emulsified microdroplets, which in turn follow the Marangoni ...
Dimitrios Karagrigoriou   +1 more
wiley   +1 more source

Soft Electromagnetic Actuator and Oscillator

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
This work presents a groundbreaking soft electromagnetic system capable of bistable actuation and self‐regulated oscillation. Using liquid metal and silicone as a compliant conductor, the actuator enables force generation, sensing, and feedback with minimal power.
Noah D. Kohls, Yi Chen Mazumdar
wiley   +1 more source

Takotsubo Cardiomyopathy Following a Transseptal Mitral Valve-in-Valve ProcedureNovel Teaching Points

open access: yesCJC Open, 2022
Mariama Akodad, MD, PhD   +7 more
doaj   +1 more source

Jefferson Surgeon Performs Minimally Invasive Robotic Mitral Valve Repair [PDF]

open access: yes, 2012
Routine physical exams often reveal the presence of a heart murmur, which can be the first sign of mitral valve prolapse. Typically diagnosed with an echocardiogram, mitral valve prolapse is a condition in which the valve separating the upper and lower ...

core   +1 more source

A Sleeve Alters the Pressure‐Stretch Curve of a Hyperelastic Balloon to Enable Pre‐Programmed Sequencing

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
This article demonstrates that encasing a hyperelastic balloon in an inextensible sleeve greatly increases its burst pressure. This simple mechanical behavior can be used to produce an asymmetric inflation‐deflation sequence for coupled balloons with different thicknesses so they could serve as a soft robot's rear and front anchors when driven from a ...
Ifat Gertler, Katherine J. Kuchenbecker
wiley   +1 more source

Computation of incompressible viscous flows through artificial heart devices with moving boundaries [PDF]

open access: yes
The extension of computational fluid dynamics techniques to artificial heart flow simulations is illustrated. Unsteady incompressible Navier-Stokes equations written in 3-D generalized curvilinear coordinates are solved iteratively at each physical time ...
Chang, I.-DEE   +3 more
core   +1 more source

Mucosa‐Interfacing Capsule for In Situ Sensing the Elasticity of Biological Tissues

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
A fundamental mechanism of palpating soft materials is reported to sense deep tissue elasticity in situ with minimal invasion using the interaction between the robot palpation unit and soft tissues. Both the robot locomotion and elasticity sensing functions are remotely controlled by external magnetic fields, while the sensing data are wirelessly ...
Kiyoung Kim   +10 more
wiley   +1 more source

“Three‐Color” Chemical Selectivity between Oxide, Nitride, and Silicon: Area‐Selective Deposition of Metal Oxide and Polymer on SiN and Si‐H versus SiO2

open access: yesAdvanced Materials Technologies, EarlyView.
Molybdenum hexafluoride as a pretreatment is able to create a chemical contrast between SiN and SiO2 surfaces via selective fluorine passivation of the oxide. One dose of MoF6 enabled 9.7 nm of selective deposited TiO2 on SiN versus SiO2 with selectivity >0.92 on a nanoscale SiN/SiO2 patterned surface.
Jeremy M. Thelven   +6 more
wiley   +1 more source

One‐Step Covalent Biofunctionalization of Tubular Constructs Enabled by Surface‐Embedded Radicals

open access: yesAdvanced Materials Technologies, EarlyView.
Uniform covalent biofunctionalization of tubular constructs is achieved in one step using surface‐embedded radicals generated by a novel plasma immersion ion implantation (PIII) technology. This scalable, solvent‐free technology advances bioengineered tubes for tissue engineering and implant applications.
Anyu Zhang   +12 more
wiley   +1 more source

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