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Magnetically manipulated microrobots are demonstrated for targeted cell transportation. Full three‐dimensional (3D) porous structures are fabricated with an SU‐8 photoresist using a 3D laser lithography system. Nickel and titanium are deposited as a magnetic material and biocompatible material, respectively. The fabricated microrobots are controlled in the fluid by external magnetic fields. Human embryonic kidney 239 (HEK 239) cells are cultivated in the microrobot to show the possibility for targeted cell transportation.

The battery-supercapacitor hybrid electrode, consisting of both faradaic rechargeable battery components and non-faradaic rechargeable supercapacitor components in a single electrode, is successfully developed using Li 4 Ti 5 O 12 -activated carbon (LTO-AC) hybrid nanotubes in a negative electrode for an advanced energy storage device. Li 4 Ti 5 O 12 and PVA-derived activated carbon are hybridized with morphological control over the one-dimensional (1D) tubular structures via an in situ sol-gel reaction combined with electrospinning, followed by a hydrothermal reaction and appropriate heat treatment. The prepared LTO-AC hybrid nanotubes are tested at a variety of charge-discharge rates as anode materials for use in lithium-ion rechargeable batteries that deliver a specific capacity in the range of 128-84 mA h g À1 over a 100-4000 mA g À1 charge-discharge rate in the potential range 1.0-2.5 V vs. Li/Li + . The hybridized LTO-AC hybrid nanotubes electrode is included in a new type of hybrid energy storage cell, denoted as BatCap, as the negative electrode using commercialized activated carbon (AC) as the positive electrode. The hybrid BatCap cell exhibits a high energy density of 32 W h kg À1 and a high power density of 6000 W kg À1 , comparable to the properties of a typical AC symmetric capacitor.

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The in situ AES/AEM technique for practical all-solid-state batteries with sulfur-based solid electrolytes was developed and the real time observation of Li dendrite growth was successfully achieved.