JP6565068B2 - 熱ルミネッセンス複合粒子及びそれを含むマーキング - Google Patents
熱ルミネッセンス複合粒子及びそれを含むマーキング Download PDFInfo
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- JP6565068B2 JP6565068B2 JP2016541418A JP2016541418A JP6565068B2 JP 6565068 B2 JP6565068 B2 JP 6565068B2 JP 2016541418 A JP2016541418 A JP 2016541418A JP 2016541418 A JP2016541418 A JP 2016541418A JP 6565068 B2 JP6565068 B2 JP 6565068B2
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Description
[0001]本発明は、少なくとも1つの超常磁性部分又はコアとドープされたセラミック材料を含む少なくとも1つの熱ルミネッセンス部分とを含む複合粒子、複数の複合粒子を含むマーキング、並びに上記マーキングを備えた物品の識別及び/又は認証のための上記マーキングの使用に関する。
[0002]偽造はもはや一国家的又は地域的な問題ではなく、製造業者のみならず消費者にも影響を及ぼす全世界的な問題である。偽造は衣類及び腕時計のような商品で大きな問題であるが、薬及び薬物に関係するとさらに一層重大になる。世界中で毎年数千の人々が偽造薬物のために命を落としている。偽造はまた、有効な納税印紙のない偽造(密輸、横流し、等)品をトラック及びトレースすることが不可能なブラックマーケットの存在のために、例えばタバコ及びアルコールの税金の徴収に影響するという点で政府の財政にとっても影響がある。
[0005]本発明はマーキングに使用される複合粒子を提供する。この粒子は少なくとも1つの超常磁性部分及び少なくとも1つの熱ルミネッセンス部分を含む。
(i)マーキングに(好ましくは電磁)放射線を照射して、照射されたエネルギーの幾らかを(熱ルミネッセンス部分に特徴的な波長の)放射線の形態で複合粒子から再放出させるステップ、
(ii)照射されたマーキングを所定の強度及び振動数の振動磁場に所定の期間供して超常磁性材料を温まらせるステップ、及び
(iii)ステップ(ii)の所定の期間中にマーキングにより所定の波長で放出された熱ルミネッセンスの強度を検出して熱ルミネッセンスの強度の変動を時間の関数として得るステップ
(iv)場合により、ステップ(iii)の後、磁場のスイッチを切った後ルミネッセンス強度の検出を続行するステップ。
ステップ(iii)で得られた熱ルミネッセンスの強度の変動を、マーキングを作成するのに使用された複合粒子(すなわち、基準サンプル)の、ステップ(i)及び(ii)で使用されたのと同じ条件下で予め決定された熱ルミネッセンスの強度の変動と比較する
ことをさらに含むことができる。
[0025]本明細書中に示されている詳細は、例示であり、本発明の実施形態の実例検討の目的のためのみのものであり、本発明の原理及び概念的な態様の最も有用で容易に理解される説明であると信じられるものを提供するために挙げられている。これに関して、本発明の基礎的な理解に必要な以上に本発明の構造的な詳細をより詳細に示す意図はなく、図面と併せた以下の説明から、当業者には、本発明の幾つかの形態を実際にどのように具体化したらよいのか明らかになる。
(i)マーキングに(好ましくは電磁)放射線(例えば、電磁スペクトルのUV又は可視の範囲の放射線)を照射して、複合粒子から熱ルミネッセンス部分に特徴的な波長の放射線を放出させるステップ、
(ii)照射されたマーキングを、所定の強度(例えば、超常磁性コアに使用されている具体的な材料及びその大きさに応じて1G〜500G又はさらにそれ以下の範囲)及び所定の振動数(例えば、超常磁性コアの具体的な材料及び大きさに応じて1kHz〜500kHz又はさらにそれ以下の範囲)の振動磁場に所定の期間(例えば、1秒〜30秒の範囲)供して、超常磁性材料を温まらせるステップ、及び
(iii)ステップ(ii)の所定の期間中に所定の波長でマーキングによって放出された熱ルミネッセンスの強度を検出して、熱ルミネッセンスの強度の変動を時間の関数として得るステップ(「グロー曲線」)
(iv)場合により、ステップ(iii)の後、磁場のスイッチを切った後、ルミネッセンス強度の検出を続行するステップ。
Journal of Nanomaterials, 2013, Article ID 752973,Hiroaki Mamiya、AC磁場における磁気ナノ粒子の理解の最近の進展及び標的化温熱療法のための最適な設計
International Journal of Molecular Sciences, 2013, 14, 15910−15930, Reju Thomas and al.、多モードイメージング及びがん療法のための磁性酸化鉄ナノ粒子
These n°5694 (2013) EPFL, Usawadee Sakulkhu、コートされたナノ粒子の調製及び生物学的環境におけるその挙動の研究
Journal of Colloid and Interface Science 278、353−360 (2004), Chastellain, M., Petri, A. & Hofmann, H.、PVAでコートされた超常磁性ナノ粒子の多工程合成の粒径調査
Biomaterials 26, 2685−2694 (2005), Petri−Fink, A., Chastellain, M., Juillerat−Jeanneret, L., Ferrari, A. & Hofmann, H.、ヒトのがん細胞との相互作用のための官能化された超常磁性酸化鉄ナノ粒子の開発
シリカ層でコートされた超常磁性コアは次の文献に記載されているように周知のゾル−ゲル合成によって得られる。
Advanced Materials, 2013, 25, 142−149,Wei Li and Dongyuan Zhao、均一な多官能性コア−シェル構造のためのメソ多孔性SiO2及びTiO2シェルを構築するためのStober方法の拡張
These n°5694 (2013) EPFL, Usawadee Sakulkhu、コートされたナノ粒子の調製及び生物学的環境におけるその挙動の研究
Chemical Engineering Journal, 239, (2014), 360−363, K. Sue et al.、高温高圧力条件下でTiライニング構造の耐食性微小流体素子を用いたPrがドープされたCa0.6Sr0.4TiO3赤色蛍光体ナノ粒子の超高速熱水合成
Journal of Alloys and Compunds 415, (2006), 220−224, C. Chang, Z. Yuan and D. Mao、沈殿法で調製されたEu2+活性化長期持続性アルミン酸ストロンチウムナノスケール蛍光体
Claims (15)
- 複数の複合粒子を含むマーキングであって、当該複合粒子の各々が少なくとも1つの超常磁性部分及び少なくとも1つの熱ルミネッセンス部分を含む、マーキング。
- 前記熱ルミネッセンス部分がドープされたセラミック材料を含む、請求項1に記載のマーキング。
- 前記超常磁性部分が超常磁性コア(a)の形態で存在し、且つ遷移金属イオン及び希土類金属イオンから選択される1種又は複数種のイオンがドープされたセラミック材料を含む前記熱ルミネッセンス部分(b)によって少なくとも部分的に包囲されている、請求項1又は2に記載のマーキング。
- 前記超常磁性コア(a)の最大寸法が5nm〜20nmである、請求項3に記載のマーキング。
- 前記包囲する熱ルミネッセンス部分(b)の厚さが10nm〜100nmである、請求項3又は4に記載のマーキング。
- 熱ルミネッセンス部分がシェル又は熱ルミネッセンス粒子の凝集体の形態で存在する、請求項1〜5のいずれか一項に記載のマーキング。
- 前記超常磁性部分又はコアがFe3O4を含む、請求項1〜6のいずれか一項に記載のマーキング。
- 前記複合粒子の各々が前記超常磁性部分を前記熱ルミネッセンス部分から分離する熱伝導性部分を更に含み、
前記熱伝導性部分が、SiO2、TiO2、ポリメチルメタクリレートの1つ又は複数を含む、請求項1〜7のいずれか一項に記載のマーキング。 - 前記複合粒子の各々が、前記超常磁性部分若しくはコア、前記熱ルミネッセンス部分、及び場合により熱伝導性部分の少なくとも1つに関して異なる、少なくとも2種の複合粒子を含む、又は熱ルミネッセンス部分及び熱伝導性部分の少なくとも1つの厚さに関して異なる、少なくとも2種の複合粒子を含む、請求項1〜8のいずれか一項に記載のマーキング。
- 請求項1〜9のいずれか一項に記載のマーキングをその上に有する物品。
- 請求項1〜9のいずれか一項に記載の複数の複合粒子及び前記複合粒子のための担体を含む、マーキングを作製するためのインク。
- マーキングを有する物品を提供する方法であって、
前記マーキングを提供するために請求項11に記載のインクを使用することを含む、方法。 - 請求項1〜9のいずれか一項に記載のマーキングを有する物品を識別すること及び認証することの少なくとも1つの方法であって、以下のステップ:
(i)前記マーキングに放射線を照射して前記複合粒子から放射線を放出させるステップ、
(ii)ステップ(i)の照射された前記マーキングを所定の強度及び振動数の振動磁場に所定の期間供して前記超常磁性部分を温まらせるステップ、及び
(iii)ステップ(ii)で適用された前記期間中、所定の波長で前記マーキングにより放出された熱ルミネッセンスの強度を検出して、前記熱ルミネッセンスの前記強度の変動を時間の関数として得るステップ
(iv)場合により、ステップ(iii)の後、前記磁場のスイッチを切った後、前記ルミネッセンス強度の検出を続行するステップ
を含み、
場合により(iii)で得られた熱ルミネッセンスの前記強度の変動を、ステップ(i)及び(ii)で使用されたものと同じ条件下で予め決定された基準サンプルの熱ルミネッセンスの強度の変動と比較するステップを更に含む、方法。 - ステップ(i)で使用される前記放射線が、UV又は可視の範囲である、請求項13に記載の方法。
- 連続的偏向ジェット技術によるインクジェット印刷により物体、基板及び/又は支持体をマーキングするプロセスであって、請求項11に記載のインクをそれらの物体に噴霧することによってマーキングするプロセス。
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TW201525088A (zh) | 2015-07-01 |
GEP20186851B (en) | 2018-05-10 |
CA2934418C (en) | 2022-07-19 |
BR112016014350B1 (pt) | 2022-08-30 |
EP3083877B1 (en) | 2017-08-30 |
EP3083877A1 (en) | 2016-10-26 |
KR102331132B1 (ko) | 2021-11-29 |
CN106029828B (zh) | 2018-10-19 |
CN106029828A (zh) | 2016-10-12 |
JP2017512214A (ja) | 2017-05-18 |
KR20160101102A (ko) | 2016-08-24 |
US20150177153A1 (en) | 2015-06-25 |
AU2014368623A1 (en) | 2016-07-07 |
AU2014368623B2 (en) | 2018-02-01 |
WO2015091745A1 (en) | 2015-06-25 |
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