2D antenna turns wifi signals into electricity

2D antenna turns wifi signals into electricity

Assessment

Interactive Video

Science, Physics, Engineering

11th Grade - University

Hard

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The video discusses a rectifying antenna, or rectenna, made from a thin molybdenum disulfide semiconductor. This device captures electromagnetic waves, like Wi-Fi, and converts them into direct current. It produces 40 microwatts of power from typical Wi-Fi signals, enough to power small devices. Early applications include flexible smartphones, wearable electronics, and medical implants. The rectenna's flexibility allows it to cover large areas, potentially wrapping around infrastructure like highways and bridges.

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5 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is a rectifying antenna or rectenna made of?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

How much power did the rectena produce when exposed to typical Wi-Fi signals?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

What are some early applications for the technology according to MIT?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

What advantages does the flexibility of the device provide?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

In what ways could electronic systems developed from this technology be utilized?

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