Electronic devices are typically manufactured in planar layouts, but many emerging applications, from optoelectronics to wearables, require three-dimensional curvy structures. However, the fabrication of such structures has proved challenging due, in particular, to the lack of an effective manufacturing technology. Here, we show that conformal additive stamp (CAS) printing technology can be used to reliably manufacture three-dimensional curvy electronics. CAS printing employs a pneumatically inflated elastomeric balloon as a conformal stamping medium to pick up pre-fabricated electronic devices and print them onto curvy surfaces. To illustrate the capabilities of the approach, we use it to create various devices with curvy shapes: silicon pellets, photodetector arrays, electrically small antennas, hemispherical solar cells and smart contact lenses. We also show that CAS printing can be used to print onto arbitrary three-dimensional surfaces.

电子设备通常以平面布局制造，但是从光电到可穿戴设备的许多新兴应用都需要三维弯曲结构。然而，尤其由于缺乏有效的制造技术，已经证明了这种结构的制造具有挑战性。在这里，我们证明了保形加盖印章（CAS）印刷技术可用于可靠地制造三维弯曲电子产品。CAS印刷采用充气的弹性体气球作为保形压印介质，以拾取预制的电子设备并将其打印在弯曲的表面上。为了说明该方法的功能，我们使用它来创建具有弯曲形状的各种设备：硅粒，光电探测器阵列，电小天线，半球形太阳能电池和智能隐形眼镜。