Photoacoustic and piezo-ultrasound hybrid-induced energy transfer for 3D twining wireless multifunctional implants,Energy & Environmental Science

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Photoacoustic and piezo-ultrasound hybrid-induced energy transfer for 3D twining wireless multifunctional implants
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2021-1-21 , DOI: 10.1039/d0ee03801f
Laiming Jiang _{1,

2,

3,

4,

5} , Gengxi Lu _{1,

2,

3,

4,

5} , Yang Yang _{5,

6,

7,

8} , Yushun Zeng _{1,

2,

3,

4,

5} , Yizhe Sun _{1,

2,

3,

4,

5} , Runze Li _{1,

2,

3,

4,

5} , Mark S. Humayun _{1,

2,

3,

4,

5} , Yong Chen _{2,

3,

4,

5,

9} , Qifa Zhou _{1,

2,

3,

4,

5}

Affiliation

Ultrasound-induced energy transfer (UET) represents an emerging technology that can be integrated into implantable medical systems for wireless power and information communication applications. However, the spatial–temporal resolution, directivity, and versatility of traditional piezo-ultrasound systems are generally limited. Here, we describe the novel design and implementation of a hybrid-induced energy transfer strategy using photoacoustic (PA) and piezo-ultrasound (PU) technology in a 3D twining wireless implant, which shows multi-mode transmission advantages, with high power, better resolution, and flexible directivity. This new ultrasonic system exploits a focused ring piezo-transducer and a miniaturized fiber-photoacoustic converter as the hybrid acoustic source and a (K,Na)NbO₃-based lead-free linear piezo-array as the harvester. Complying with FDA regulations, hybrid-induced multifunctionality, such as stable powering (∼21.3 mW cm⁻²) and the high-resolution signal communication (signal-to-noise ratio: ∼22.5 dB) of a two-dimensional image, was demonstrated ex vivo using 12 mm-thick porcine tissue. The 3D twining design also ensures that the device can achieve stable energy harvesting without operational difficulties, a unique advantage that can facilitate its future clinical application.

中文翻译：

用于3D缠绕无线多功能植入物的光声和压电超声混合诱导的能量转移

超声诱导的能量转移（UET）代表了一种新兴技术，可以集成到用于无线电源和信息通信应用的可植入医疗系统中。但是，传统压电超声系统的时空分辨率，方向性和通用性普遍受到限制。在这里，我们描述了在3D孪生无线植入物中使用光声（PA）和压电超声（PU）技术的混合感应能量转移策略的新颖设计和实现，该方法显示了多模式传输的优点，即高功率，更好分辨率和灵活的方向性。这种新的超声系统利用聚焦环形压电换能器和小型化的光纤光声转换器作为混合声源和（K，Na）NbO ₃的无铅线性压电阵列作为收割机。符合FDA法规，证明了混合动力诱导的多功能性，例如稳定的功率（〜21.3 mW cm ^-2）和二维图像的高分辨率信号通信（信噪比：〜22.5 dB）。使用12毫米厚的猪组织进行离体。3D缠绕设计还确保该设备可以实现稳定的能量收集，而不会遇到操作困难，这是可以促进其未来临床应用的独特优势。

更新日期：2021-02-04

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