University of Michigan

Michael D Thouless

Ellen M Arruda

Tanaz Rahimzadeh

Anthony M Waas

Levon Cimonian

Marie Rice

Nicholas Alexander Kotov

Dongeun Huh

Shuichi Takayama

Anish Tuteja

Carlos A Pons Siepermann

Abhishek Dhyani

Ryan M Anderson

Ming Yang

Kristen L Mills

Nicholas Joseph Douville

Keqin Cao

Kevin Golovin

An anti-icing coating is provided having low interfacial toughness (LIT) with ice. The anti-icing coating includes a polymer and a plasticizing agent. A thickness of the anti-icing coating may be less than or equal to about 100 micrometers (μm). Further, the anti-icing coating has an interfacial toughness (Γ) with ice of less than or equal to about 1 J/m. Such an anti-icing coating may be applied to a substrate or surface of a device on which ice may form, such as aircraft, vehicles, marine vessels, outdoor equipment, snow or ice removal equipment, recreational equipment, wind turbines, telecommunications equipment, power lines, and the like. Methods of forming such anti-icing coatings are also provided.

Anti-icing surfaces exhibiting low interfacial toughness with ice

Dissociation of a macroscale version of an aramid fiber leads to the nanofiber form of this polymer. Indefinitely stable dispersions of uniform high-aspect-ratio aramid nanofibers (ANFs) with diameters between 3 and 30 nm controlled by the media composition and up to 10 &#x3bc;m in length are obtained. ANFs can be processed in transparent thin films using layer-by-layer assembly (LBL) with superior mechanical performance.

Synthesis and use of aramid nanofibers

A protective device and method of design to protect against multiple blast and impact events for use in any application in which a delicate target has to be protected. The protective device for mitigating the effects of blast or impact employs a first layer having a first acoustic impedance and a second layer having a second acoustic impedance. The second acoustic impedance is different than the first acoustic impedance. The second layer is proximate to the first layer. The first layer and the second layer are chosen collectively to tune the stress waves from the blast or impact events to one or more specific tuned frequencies. A third layer of a visco-elastic material is employed having a critical damping frequency that matches one or more specific tuned frequencies to dissipate the stress waves of the blast and impact event. The third layer is proximate to the second layer.

Blast/impact frequency tuning mitigation

A tuning and mitigation system and method for mitigating a blast or impact event having an elastic layer having an acoustic impedance chosen to tune stress waves resulting from the blast or impact to one or more specific tuned frequencies, and a dissipative layer made of a viscoelastic material having a critical damping frequency that matches at least one or more specific tuned frequencies.

Blast/impact frequency tuning and mitigation

A tuning and mitigation system for mitigating a blast or impact event having a tuning layer assembly having an acoustic impedance chosen to tune stress waves resulting from the blast or impact to one or more specific tuned frequencies, and a dissipative layer assembly made of a viscoelastic material having a critical damping frequency that matches at least one or more specific tuned frequencies.

The invention relates to tunable elastomeric nanochannels for nanofluidic manipulation. In particular, the present invention relates to nanochannels for performing biological assays.

Tunable elastomeric nanochannels for nanofluidic manipulation

Growing community of inventors

Ann Arbor, MI, United States of America

Michael D Thouless