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Detection of atomic spin labels in a lipid bilayer using a single-spin nanodiamond probe

ナノダイヤモンド中の単一スピンを利用した脂質二層中の原子スピンの観測

Kaufmann, S.*; Simpson, D. A.*; Hall, L. T.*; Perunicic, V.*; Senn, P.*; Steinert, S.*; McGuinness, L. P.*; Johnson, B. C.*; 大島 武; Caruso, F.*; Wrachtrup, J.*; Scholten, R. E.*; Mulvaney, P.*; Hollenberg, L.*

Kaufmann, S.*; Simpson, D. A.*; Hall, L. T.*; Perunicic, V.*; Senn, P.*; Steinert, S.*; McGuinness, L. P.*; Johnson, B. C.*; Oshima, Takeshi; Caruso, F.*; Wrachtrup, J.*; Scholten, R. E.*; Mulvaney, P.*; Hollenberg, L.*

The detection of gadolinium (Gd) spin labels in an artificial cell membrane under ambient conditions was demonstrated using a single-spin nanodiamond sensor which is negatively charged nitrogen vacancy centers in nanodiamond. Changes in the spin relaxation time (T1) of the sensor located in the lipid bilayer were optically detected using a confocal microscope system. As a result, T1 decreased with increasing proximal Gd labels. The detection of such small numbers of spins in a model biological setting opens a new pathway for in-situ nanoscale detection of dynamical processes in biology.

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パーセンタイル:92.61

分野:Multidisciplinary Sciences

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